Side chains affect the melt processing and stretchability of arabinoxylan biomass-based thermoplastic films
Chemosphere. 2022 Jan 20:133618. doi: 10.1016/j.chemosphere.2022.133618. Online ahead of print.ABSTRACTHydrophobization of hemicellulose causes melt processing and makes them stretchable thermoplastics. Understanding how native and/or appended side chains in various hemicelluloses after chemical modification affect melt processing and material properties can help in the development of products for film packaging and substrates for stretchable electronics applications. Herein, we describe a one-step and two-step strategy for the fabrication of flexible and stretchable thermoplastics prepared by compression molding of two st...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Parveen Kumar Deralia Amit Kumar Sonker Anja Lund Anette Larsson Anna Str öm Gunnar Westman Source Type: research

Stimulating effects of reduced graphene oxide on the growth and nitrogen fixation activity of nitrogen-fixing bacterium Azotobacter chroococcum
In this study, we reported the stimulating effects of reduced graphene oxide (RGO) to nitrogen-fixing bacterium Azotobacter chroococcum. RGO stimulated the cell growth of A. chroococcum at 0.010-0.500 mg/mL according to the growth curves and the colony-forming unit (CFU) increases. RGO wrapped over the A. chroococcum cells without inducing ultrastructural changes. RGO decreased the leakage of cell membrane, but slight oxidative stress was observed in A. chroococcum. RGO promoted the nitrogen fixation activity of A. chroococcum at 0.5 mg/mL according to both isotope dilution method and acetylene reduction activity measureme...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Peng Ouyang Chengzhuang Liang Fangshi Liu Qian Chen Ziqiao Yan Junyao Ran Shiyu Mou Yue Yuan Xian Wu Sheng-Tao Yang Source Type: research

Refractory fluorescent dissolved organic matter in conventional and membrane-based drinking water treatment processes
Chemosphere. 2022 Jan 20:133698. doi: 10.1016/j.chemosphere.2022.133698. Online ahead of print.ABSTRACTFluorescent dissolved organic matter (fDOM) has been generally considered a refractory DOM component for drinking water treatment. However, this judgement is made without clear understandings on the removal behaviors of individual fDOM fractions. Therefore, the removals of high, medium and low molecular weight (MW), as well as hydrophobic fDOM fractions in a natural surface water were determined in this study for selected bench- and full-scale water treatment processes. The results showed that low MW (
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Mengya Li Qing Yang Guiyin Fang Haiou Huang Source Type: research

Association of As, Pb, Cr, and Zn urinary heavy metals levels with predictive indicators of cardiovascular disease and obesity in children and adolescents
CONCLUSION: Childhood and adolescent exposure to As, Pb, Cr, and Zn can impact obesity and cardiovascular disease markers. The current research was a cross-sectional study, which necessitates group studies and case studies to evaluate causal relationships.PMID:35066075 | DOI:10.1016/j.chemosphere.2022.133664 (Source: Chemosphere)
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Habibeh Nasab Saeed Rajabi Mostafa Eghbalian Mohammad Malakootian Majid Hashemi Hadi Mahmoudi-Moghaddam Source Type: research

Construction of Li/K dopants and cyano defects in graphitic carbon nitride for highly efficient peroxymonosulfate activation towards organic contaminants degradation
Chemosphere. 2022 Jan 20:133700. doi: 10.1016/j.chemosphere.2022.133700. Online ahead of print.ABSTRACTAs an emerging peroxymonosulfate (PMS) activation catalyst, graphitic carbon nitride (g-C3N4) is non-toxic and eco-friendly, while its poor catalytic performance hinders the application of pristine g-C3N4. Herein, a simple LiCl/KCl molten salts-assisted thermal polymerization method was adopted to promote the photocatalytic performance of g-C3N4. With the insertion of Li/K dopants and the introduction of surface cyano defects, the modified catalyst exhibited greatly enhanced ability on PMS activation towards acetaminophen...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Xueyan Liu Minshu Cui Kangping Cui Yan Ding Xing Chen Changbin Chen Xianbao Nie Source Type: research

Comparison of the exposure assessment of di(2-ethylhexyl) phthalate between the PBPK model-based reverse dosimetry and scenario-based analysis: A Korean general population study
In this study, to provide a useful cross-check on the accuracy of the exposure assessment, the estimated daily intake of DEHP was compared using reverse dosimetry with a physiologically-based pharmacokinetic (PBPK) model and a scenario-based probabilistic estimation model for six subpopulations in Korea. For reverse dosimetry analysis, the concentrations of urinary DEHP metabolites, namely mono (2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) and mono (2-ethyl-5-oxohexyl)phthalate (MEOHP), from three human biomonitoring program datasets were used. For the scenario-based model, we evaluated the various exposure sources of DEHP, i...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Hyojung Yoon Tae Hwan Kim Byoung-Cheun Lee Byeongwoo Lee Pilje Kim Beom Soo Shin Jinhee Choi Source Type: research

Impacts of diethylhexyl phthalate and overfeeding on physical fitness and lipid mobilization of Danio rerio (zebrafish)
This study investigated the hypothesis that co-exposure to DEHP and overfeeding would result in decreased lipid mobilization and physical fitness in Danio rerio (zebrafish). Four treatment groups were randomly assigned: Regular Fed (control, 10 mg/fish/day with 0 mg/kg DEHP), Overfed (20 mg/fish/day with 0 mg/kg DEHP), Regular Fed + DEHP (10 mg/fish/day with 3 mg/kg DEHP), Overfed + DEHP (20 mg/fish/day with 3 mg/kg DEHP). After 24 weeks, swim tunnel assays were conducted on half of the zebrafish from each treatment to measure critical swimming speeds (Ucrit); the other fish were euthanized without swimming. Body mass inde...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Amanda N Buerger Caitlyn E Parente Jason P Harris Emily G Watts Alexis M Wormington Joseph H Bisesi Source Type: research

Sludge-based activated carbon and its application in the removal of perfluoroalkyl substances: A feasible approach towards a circular economy
This study explores the recovery of resources and energy from sewage sludge through the production of sludge-based activated carbon (SBAC) considering circular economy principles. The SBAC production costs were estimated under three scenarios considering various sludge dewatering/drying schemes to determine the production feasibility and its role in the circular economy. SBAC was tested in the removal of a mixture of nine commonly detected poly- and perfluoroalkyl substances (PFASs) in environmentally relevant concentrations of ∽50 μg/L in comparison to commercially available activated carbon (AC) using 5 mg of sorben...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Badr A Mohamed Loretta Y Li Hanna Hamid Matthew Jeronimo Source Type: research

The effects of biochar and redox conditions on soil Pb bioaccessibility to people and waterfowl
In this study, 17 biochars were evaluated as in situ amendments for three soils with distinct sources of Pb contamination (smelter emissions, ceramics waste, mining waste), hydrology (upland, well-drained soil vs submerged wetland soil), and biological receptors (human vs waterfowl). Biochars were made from blends of 30% manure (poultry litter or dairy manure) and 70% lignocellulosic material (wheat straw or grand fir shavings) and pyrolyzed at 300, 500, 700, and 900 °C. Soils were amended with 2% biochar (w/w) and incubated for 6 months. A suite of standard (e.g., EPA Method 1340) and experimental soil Pb bioaccessibi...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Shannon A Plunkett Chris S Eckley Todd P Luxton Mark G Johnson Source Type: research

Green application of trimetallic nickel-cobalt-molybdenum nanocomposites on 3D graphene oxide as a powerful electrocatalyst for hydrogen evolution reaction
Chemosphere. 2022 Jan 20:133670. doi: 10.1016/j.chemosphere.2022.133670. Online ahead of print.ABSTRACTIn-situ designing of multiple metals electrocatalysts with high active sites and performance is the main challenge for hydrogen evolution reaction (HER). So in this work, 3D-rGO was easily obtained from 2D-graphene by a simple one-step hydrothermal method to create the interspace sites and active surface area. The Ni-Co-Mo tri-metallic@3D-rGO was synthesized and fully characterized by different techniques, e.g., FT-IR, XRD, Raman, FE-SEM, TEM, EDS, mapping, ICP-OES, AFM, voltammetry, and electrochemical impedance spectros...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: S Niknazar Ali A Ensafi E Heydari-Soureshjani B Rezaei Source Type: research

Robust and sustainable Mg < sub > 1-x < /sub > Ce < sub > x < /sub > Ni < sub > y < /sub > Fe < sub > 2-y < /sub > O < sub > 4 < /sub > magnetic nanophotocatalysts with improved photocatalytic performance towards photodegradation of crystal violet and rhodamine B pollutants
This study aims at manufacturing Ce3+/Ni2+ ions doped Mg nanoferrites by the sol-gel method for the photocatalytic degradation of rhodamine B and crystal violet pollutants under visible natural sunlight. The particle size of synthesized nanoferrites was calculated through XRD, Hall-William plots, and TEM analysis, which perfectly agree with each other. FTIR study investigated the existence of stretching vibrations in M - O (metal-oxygen) complexes at the tetrahedral (A-site) and octahedral sites (B-site). The Raman spectra of synthesized nanophotocatalysts show the presence of four vibrational modes (Eg + 2T2g + A1g), prov...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Rohit Jasrotia Jyoti Prakash Gagan Kumar Ritesh Verma Swati Kumari Sachin Kumar Virender Pratap Singh Ashok K Nadda Susheel Kalia Source Type: research

Nitrogen-doped carbon nanosheets with Fe-based nanoparticles for highly efficient degradation of antibiotics and sulfate ion enhancement effect
Chemosphere. 2022 Jan 20:133704. doi: 10.1016/j.chemosphere.2022.133704. Online ahead of print.ABSTRACTDeveloping Fe-based catalysts with high-effective and environmentally friendly features in Fenton-like system for treating wastewater is still a challenge. Novel nitrogen-doped carbon nanosheets with Fe0/Fe3C nano-particles (Fe@NCS-900) were prepared through a simple solvent-free strategy by pyrolyzing the mixture of 2,6-diaminopyridine and ferric chloride hexahydrate under 900 °C. The Fe@NCS-900 possessed almost 100% removal efficiency and 66.5% mineralization rate for the degradation of CBZ in 10 min. Moreover, the ...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Wenkai Song Zenglong Wu Xiangwei Xu Haijie Wu Yuyuan Yao Source Type: research

Effect of nitrilotriacetic acid and tea saponin on the phytoremediation of Ni by Sudan grass (Sorghum sudanense (Piper) Stapf.) in Ni-pyrene contaminated soil
In this study, nitrilotriacetic acid (NTA) and tea saponin (TS) were used as enhancers and combined with Sudan grass for improving the remediation efficiency of Ni-pyrene co-contaminated soil. The results of the pot experiment in soils showed that enhancers promoted the enrichment of Ni in plants. With the function of enhancers, more inorganic and water-soluble Ni were converted into low-toxic phosphate-bonded and residual Ni, so as to reinforce the tolerance of Sudan grass to Ni. In the pot experiment based on vermiculite, it was found that enhancers increased the accumulation of Ni in cell wall by 49.71-102.73%. Enhancer...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Anxing Jiao Bingjie Gao Mingjing Gao Xiaoyan Liu Xinying Zhang Chuanhua Wang Delong Fan Zongrui Han Ziqiao Hu Source Type: research

Side chains affect the melt processing and stretchability of arabinoxylan biomass-based thermoplastic films
Chemosphere. 2022 Jan 20:133618. doi: 10.1016/j.chemosphere.2022.133618. Online ahead of print.ABSTRACTHydrophobization of hemicellulose causes melt processing and makes them stretchable thermoplastics. Understanding how native and/or appended side chains in various hemicelluloses after chemical modification affect melt processing and material properties can help in the development of products for film packaging and substrates for stretchable electronics applications. Herein, we describe a one-step and two-step strategy for the fabrication of flexible and stretchable thermoplastics prepared by compression molding of two st...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Parveen Kumar Deralia Amit Kumar Sonker Anja Lund Anette Larsson Anna Str öm Gunnar Westman Source Type: research

Stimulating effects of reduced graphene oxide on the growth and nitrogen fixation activity of nitrogen-fixing bacterium Azotobacter chroococcum
In this study, we reported the stimulating effects of reduced graphene oxide (RGO) to nitrogen-fixing bacterium Azotobacter chroococcum. RGO stimulated the cell growth of A. chroococcum at 0.010-0.500 mg/mL according to the growth curves and the colony-forming unit (CFU) increases. RGO wrapped over the A. chroococcum cells without inducing ultrastructural changes. RGO decreased the leakage of cell membrane, but slight oxidative stress was observed in A. chroococcum. RGO promoted the nitrogen fixation activity of A. chroococcum at 0.5 mg/mL according to both isotope dilution method and acetylene reduction activity measureme...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Peng Ouyang Chengzhuang Liang Fangshi Liu Qian Chen Ziqiao Yan Junyao Ran Shiyu Mou Yue Yuan Xian Wu Sheng-Tao Yang Source Type: research

Refractory fluorescent dissolved organic matter in conventional and membrane-based drinking water treatment processes
Chemosphere. 2022 Jan 20:133698. doi: 10.1016/j.chemosphere.2022.133698. Online ahead of print.ABSTRACTFluorescent dissolved organic matter (fDOM) has been generally considered a refractory DOM component for drinking water treatment. However, this judgement is made without clear understandings on the removal behaviors of individual fDOM fractions. Therefore, the removals of high, medium and low molecular weight (MW), as well as hydrophobic fDOM fractions in a natural surface water were determined in this study for selected bench- and full-scale water treatment processes. The results showed that low MW (
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Mengya Li Qing Yang Guiyin Fang Haiou Huang Source Type: research

Association of As, Pb, Cr, and Zn urinary heavy metals levels with predictive indicators of cardiovascular disease and obesity in children and adolescents
CONCLUSION: Childhood and adolescent exposure to As, Pb, Cr, and Zn can impact obesity and cardiovascular disease markers. The current research was a cross-sectional study, which necessitates group studies and case studies to evaluate causal relationships.PMID:35066075 | DOI:10.1016/j.chemosphere.2022.133664 (Source: Chemosphere)
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Habibeh Nasab Saeed Rajabi Mostafa Eghbalian Mohammad Malakootian Majid Hashemi Hadi Mahmoudi-Moghaddam Source Type: research

Construction of Li/K dopants and cyano defects in graphitic carbon nitride for highly efficient peroxymonosulfate activation towards organic contaminants degradation
Chemosphere. 2022 Jan 20:133700. doi: 10.1016/j.chemosphere.2022.133700. Online ahead of print.ABSTRACTAs an emerging peroxymonosulfate (PMS) activation catalyst, graphitic carbon nitride (g-C3N4) is non-toxic and eco-friendly, while its poor catalytic performance hinders the application of pristine g-C3N4. Herein, a simple LiCl/KCl molten salts-assisted thermal polymerization method was adopted to promote the photocatalytic performance of g-C3N4. With the insertion of Li/K dopants and the introduction of surface cyano defects, the modified catalyst exhibited greatly enhanced ability on PMS activation towards acetaminophen...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Xueyan Liu Minshu Cui Kangping Cui Yan Ding Xing Chen Changbin Chen Xianbao Nie Source Type: research

Comparison of the exposure assessment of di(2-ethylhexyl) phthalate between the PBPK model-based reverse dosimetry and scenario-based analysis: A Korean general population study
In this study, to provide a useful cross-check on the accuracy of the exposure assessment, the estimated daily intake of DEHP was compared using reverse dosimetry with a physiologically-based pharmacokinetic (PBPK) model and a scenario-based probabilistic estimation model for six subpopulations in Korea. For reverse dosimetry analysis, the concentrations of urinary DEHP metabolites, namely mono (2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) and mono (2-ethyl-5-oxohexyl)phthalate (MEOHP), from three human biomonitoring program datasets were used. For the scenario-based model, we evaluated the various exposure sources of DEHP, i...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Hyojung Yoon Tae Hwan Kim Byoung-Cheun Lee Byeongwoo Lee Pilje Kim Beom Soo Shin Jinhee Choi Source Type: research

Impacts of diethylhexyl phthalate and overfeeding on physical fitness and lipid mobilization of Danio rerio (zebrafish)
This study investigated the hypothesis that co-exposure to DEHP and overfeeding would result in decreased lipid mobilization and physical fitness in Danio rerio (zebrafish). Four treatment groups were randomly assigned: Regular Fed (control, 10 mg/fish/day with 0 mg/kg DEHP), Overfed (20 mg/fish/day with 0 mg/kg DEHP), Regular Fed + DEHP (10 mg/fish/day with 3 mg/kg DEHP), Overfed + DEHP (20 mg/fish/day with 3 mg/kg DEHP). After 24 weeks, swim tunnel assays were conducted on half of the zebrafish from each treatment to measure critical swimming speeds (Ucrit); the other fish were euthanized without swimming. Body mass inde...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Amanda N Buerger Caitlyn E Parente Jason P Harris Emily G Watts Alexis M Wormington Joseph H Bisesi Source Type: research

Sludge-based activated carbon and its application in the removal of perfluoroalkyl substances: A feasible approach towards a circular economy
This study explores the recovery of resources and energy from sewage sludge through the production of sludge-based activated carbon (SBAC) considering circular economy principles. The SBAC production costs were estimated under three scenarios considering various sludge dewatering/drying schemes to determine the production feasibility and its role in the circular economy. SBAC was tested in the removal of a mixture of nine commonly detected poly- and perfluoroalkyl substances (PFASs) in environmentally relevant concentrations of ∽50 μg/L in comparison to commercially available activated carbon (AC) using 5 mg of sorben...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Badr A Mohamed Loretta Y Li Hanna Hamid Matthew Jeronimo Source Type: research

The effects of biochar and redox conditions on soil Pb bioaccessibility to people and waterfowl
In this study, 17 biochars were evaluated as in situ amendments for three soils with distinct sources of Pb contamination (smelter emissions, ceramics waste, mining waste), hydrology (upland, well-drained soil vs submerged wetland soil), and biological receptors (human vs waterfowl). Biochars were made from blends of 30% manure (poultry litter or dairy manure) and 70% lignocellulosic material (wheat straw or grand fir shavings) and pyrolyzed at 300, 500, 700, and 900 °C. Soils were amended with 2% biochar (w/w) and incubated for 6 months. A suite of standard (e.g., EPA Method 1340) and experimental soil Pb bioaccessibi...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Shannon A Plunkett Chris S Eckley Todd P Luxton Mark G Johnson Source Type: research

Green application of trimetallic nickel-cobalt-molybdenum nanocomposites on 3D graphene oxide as a powerful electrocatalyst for hydrogen evolution reaction
Chemosphere. 2022 Jan 20:133670. doi: 10.1016/j.chemosphere.2022.133670. Online ahead of print.ABSTRACTIn-situ designing of multiple metals electrocatalysts with high active sites and performance is the main challenge for hydrogen evolution reaction (HER). So in this work, 3D-rGO was easily obtained from 2D-graphene by a simple one-step hydrothermal method to create the interspace sites and active surface area. The Ni-Co-Mo tri-metallic@3D-rGO was synthesized and fully characterized by different techniques, e.g., FT-IR, XRD, Raman, FE-SEM, TEM, EDS, mapping, ICP-OES, AFM, voltammetry, and electrochemical impedance spectros...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: S Niknazar Ali A Ensafi E Heydari-Soureshjani B Rezaei Source Type: research

Robust and sustainable Mg < sub > 1-x < /sub > Ce < sub > x < /sub > Ni < sub > y < /sub > Fe < sub > 2-y < /sub > O < sub > 4 < /sub > magnetic nanophotocatalysts with improved photocatalytic performance towards photodegradation of crystal violet and rhodamine B pollutants
This study aims at manufacturing Ce3+/Ni2+ ions doped Mg nanoferrites by the sol-gel method for the photocatalytic degradation of rhodamine B and crystal violet pollutants under visible natural sunlight. The particle size of synthesized nanoferrites was calculated through XRD, Hall-William plots, and TEM analysis, which perfectly agree with each other. FTIR study investigated the existence of stretching vibrations in M - O (metal-oxygen) complexes at the tetrahedral (A-site) and octahedral sites (B-site). The Raman spectra of synthesized nanophotocatalysts show the presence of four vibrational modes (Eg + 2T2g + A1g), prov...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Rohit Jasrotia Jyoti Prakash Gagan Kumar Ritesh Verma Swati Kumari Sachin Kumar Virender Pratap Singh Ashok K Nadda Susheel Kalia Source Type: research

Nitrogen-doped carbon nanosheets with Fe-based nanoparticles for highly efficient degradation of antibiotics and sulfate ion enhancement effect
Chemosphere. 2022 Jan 20:133704. doi: 10.1016/j.chemosphere.2022.133704. Online ahead of print.ABSTRACTDeveloping Fe-based catalysts with high-effective and environmentally friendly features in Fenton-like system for treating wastewater is still a challenge. Novel nitrogen-doped carbon nanosheets with Fe0/Fe3C nano-particles (Fe@NCS-900) were prepared through a simple solvent-free strategy by pyrolyzing the mixture of 2,6-diaminopyridine and ferric chloride hexahydrate under 900 °C. The Fe@NCS-900 possessed almost 100% removal efficiency and 66.5% mineralization rate for the degradation of CBZ in 10 min. Moreover, the ...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Wenkai Song Zenglong Wu Xiangwei Xu Haijie Wu Yuyuan Yao Source Type: research

Effect of nitrilotriacetic acid and tea saponin on the phytoremediation of Ni by Sudan grass (Sorghum sudanense (Piper) Stapf.) in Ni-pyrene contaminated soil
In this study, nitrilotriacetic acid (NTA) and tea saponin (TS) were used as enhancers and combined with Sudan grass for improving the remediation efficiency of Ni-pyrene co-contaminated soil. The results of the pot experiment in soils showed that enhancers promoted the enrichment of Ni in plants. With the function of enhancers, more inorganic and water-soluble Ni were converted into low-toxic phosphate-bonded and residual Ni, so as to reinforce the tolerance of Sudan grass to Ni. In the pot experiment based on vermiculite, it was found that enhancers increased the accumulation of Ni in cell wall by 49.71-102.73%. Enhancer...
Source: Chemosphere - January 23, 2022 Category: Chemistry Authors: Anxing Jiao Bingjie Gao Mingjing Gao Xiaoyan Liu Xinying Zhang Chuanhua Wang Delong Fan Zongrui Han Ziqiao Hu Source Type: research

Multi-walled carbon nanotubes impact on the enantioselective bioaccumulation and toxicity of the chiral insecticide bifenthrin to zebrafish (Danio rerio)
Chemosphere. 2022 Jan 18:133690. doi: 10.1016/j.chemosphere.2022.133690. Online ahead of print.ABSTRACTThe effects of different multi-walled carbon nanotubes on the enantioselective bioaccumulation and toxicity of the chiral pesticide bifenthrin to zebrafish were investigated in this work. The results showed that MWCNTs and MWCNTs-COOH did not affect the preferential bioaccumulation of 1R-cis-BF in zebrafish following exposure to cis-BF enantiomers for 28 days, but which increased cis-BF accumulation amount by 1.03-1.48 times. Further research demonstrated that the genes related to immunity, endocrine and neurotoxicity sho...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Tingting Zhao Bo Ren Yuexing Zhao Haiyue Chen Ju Wang Yanhong Li Hanlin Liang Li Li Hongwu Liang Source Type: research

Surface migration of Pb(II) from water and soil using an aerogel/graphite felt primary cell system
Chemosphere. 2022 Jan 18;294:133666. doi: 10.1016/j.chemosphere.2022.133666. Online ahead of print.ABSTRACTTo develop a zero energy consumption electrokinetic remediation method of Pb(II) in water and soil, a primary cell system was constructed via synergistic effects of the electromigration, ion exchange, precipitation and hydrogen bond. The primary cell system used cathode of calcium alginate aerogel/graphite felt (CAA/GF) and another piece of CAA/GF was placed on the top of the water and soil. Thus the electric field in the system could drive positively charged Pb(II) towards the top of and thus Pb(II) was surface migra...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Jinghong Ye Qingchuan Wu Cheng Peng He Xu Jing Zhang Tao Xie Zhengyan Wu Dongfang Wang Dongqing Cai Source Type: research

Reproducibility and long-term stability of Sn doped MnO < sub > 2 < /sub > nanostructures: Practical photocatalytic systems and wastewater treatment applications
Chemosphere. 2022 Jan 18:133646. doi: 10.1016/j.chemosphere.2022.133646. Online ahead of print.ABSTRACTSn-doped MnO2 were synthesized as an oxidant, a mediator of maleic acid (C4H4O4) and SnCl2 as doping ingredient via a basic sol-gel reaction with KMnO4. XRD study signposts that tetragonal crystal structure of MnO2 (ICDD#44-0141) with a plane group of 12/m (87) for both pure and Sn doped MnO2 nanostructures. The photocatalyst synthesized has mesoporosity, allowing to the N2 adsorption/desorption experiments. The geometry of the materials varies from spherical shape in pristine MnO2 to a rod-like shape in Sn-MnO2, as obser...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: S Panimalar M Subash M Chandrasekar R Uthrakumar C Inmozhi Wedad A Al-Onazi Amal M Al-Mohaimeed Tse-Wei Chen J Kennedy M Maaza K Kaviyarasu Source Type: research

A new technique for reducing accumulation, transport, and toxicity of heavy metals in wheat (Triticum aestivum L.) by bio-filtration of river wastewater
Chemosphere. 2022 Jan 18:133642. doi: 10.1016/j.chemosphere.2022.133642. Online ahead of print.ABSTRACTThe occurrence of contaminants such as heavy metals in an aqueous environment has become a global concern. In the present study, a bio-filter was designed to eliminate heavy metals from river wastewater contaminated with industrial effluents. Moreover, we analyzed simple tap water, bio-filtered water, and unfiltered river wastewater and measured the concentrations of different heavy metals in the samples, such as cadmium (Cd), nickel (Ni), lead (Pb), and copper (Cu). The current experiment explored irrigation effects of t...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Samrah Afzal Awan Imran Khan Muhammad Rizwan Zeeshan Ali Shafaqat Ali Naeem Khan Natarajan Arumugam Abdulrahman I Almansour Noshin Ilyas Source Type: research

Biosorption of heavy metals: Transferability between batch and column studies
This study identified batch sorption parameters that can be used to determine BT for a column sorption setting for three toxic heavy metals commonly found in industrial wastewater, namely, Pb2+, Cd2+ and Cu2+. The study conducted a comprehensive evaluation of the relationships between column BT and its key influential factors, namely, equilibrium sorption capacity (qe), pseudo second-order kinetic rate constant (k2) and initial sorption rate (h). The results revealed that BT can be better estimated using h compared to qe and k2. As such, a batch experiment which is more resource efficient could be undertaken for an initial...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Chaamila Pathirana Abdul M Ziyath Prasanna Egodawatta Nilanthi Bandara K B S N Jinadasa Erick R Bandala Buddhi Wijesiri Ashantha Goonetilleke Source Type: research

Lipid profiling of coral symbiosomes in response to copper-induced carbon limitation: A metabolic effect of algal symbionts on the host immune status
Chemosphere. 2022 Jan 18:133673. doi: 10.1016/j.chemosphere.2022.133673. Online ahead of print.ABSTRACTCopper micropollutants are known to constrain coral's assimilation of carbonate, affecting the carbon available to algal symbionts and thus inducing a light stress. However, little is known regarding the physiological relevance of lipid metabolism in coral symbiotic algae in a carbon-limited state. Membrane lipids exhibit multiple physicochemical properties that are collectively responsible for the dynamic structure of cells depending on the physiological demands of the circumstances. To gain insight into lipid metabolism...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Chuan-Ho Tang Shu-Han Shi Hsing-Hui Li Ching-Yu Lin Wei-Hsien Wang Source Type: research

Characteristics of secondary organic aerosols tracers in PM < sub > 2.5 < /sub > in three central cities of the Yangtze river delta, China
In this study, 14 typical SOA tracers were measured in PM2.5 collected from three central cities of the Yangtze River Delta (YRD) region in the winter of 2014 and the summer of 2015. Among the determined SOA tracers, α/β-pinene SOA tracers contributed 55.9%, followed by isoprene SOA tracers (33.7%), anthropogenic benzene SOA tracer (6.4%) and β-caryophyllene SOA tracer (4.0%). There was no significant difference in the concentration of individual SOA tracers among the three cities (p> 0.05), indicating a high degree of regional consistency. The concentrations of isoprene, α/β-pinene, and tolue...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Chen Yang Zhenyu Hong Jinsheng Chen Lingling Xu Mazhan Zhuang Zhi Huang Source Type: research

Association between urinary thallium exposure and cardiovascular disease in U.S. adult population
The objective of this study was to determine the relationship of urinary metals to CVD in a general population of U.S. adults. We analyzed the cross-sectional data from 6867 adults (age ≥20 years) participants with 12 urinary metals in the National Health and Nutrition Examination Survey (NHANES) (2011-2016). Multivariate logistic regression and restricted cubic spline (RCS) regression were conducted to explore the association between urinary metals and CVD outcomes. Sensitivity analyses were performed to test the robustness of the results. Compared to the lowest quartiles, the odds ratios with 95% confidence intervals ...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Sibo Wang Jiateng Sun Chunping Tang Lingfeng Gu Chong Du Hao Wang Yao Ma Liansheng Wang Source Type: research

Can anammox process be adopted for treating wastewater with high salinity exposure risk?
Chemosphere. 2022 Jan 18:133660. doi: 10.1016/j.chemosphere.2022.133660. Online ahead of print.ABSTRACTAnammox was a promising technology for nitrogen removal, and has been applied for treating many kinds of nitrogenous wastewaters. Considering the risk in high salinity of the municipal sewage in coastal city, the feasibility of Anammox process for treating low ammonia wastewater (around 50 mg L-1) with increasing salinity was investigated in this study. The results showed that the salinity in low concentrations (1-5 g L-1) had slight impact on the nitrogen removal and activity of Anammox bacteria but significantly improve...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Xiaojing Zhang Han Zhang Bingbing Ma Yali Song Lan Wang Qiong Wang Yongpeng Ma Source Type: research

Study on characteristics of organic components in condensable particulate matter before and after wet flue gas desulfurization system of coal-fired power plants
Chemosphere. 2022 Jan 18:133668. doi: 10.1016/j.chemosphere.2022.133668. Online ahead of print.ABSTRACTWet flue gas desulfurization (WFGD) in coal-fired power plants has a great impact on the emission of particulate matter, including filterable particulate matter (FPM) and condensable particulate matter (CPM). In this paper, CPM and FPM in flue gas before and after WFGD in coal-fired power plants were sampled in parallel. FPM was tested according to ISO standard 23210-2009, and CPM was tested according to U.S. EPA Method 202. A method for quantitatively analyzing fatty acid methyl esters in CPM was established, and the rem...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Siqi Liu Yujia Wu Zhenyao Xu Shengyong Lu Xiaodong Li Source Type: research

Individual and mixtures of metal exposures in associations with biomarkers of oxidative stress and global DNA methylation among pregnant women
Chemosphere. 2022 Jan 18:133662. doi: 10.1016/j.chemosphere.2022.133662. Online ahead of print.ABSTRACTBACKGROUND: Prenatal exposure to metals has been linked with adverse pregnancy outcomes. Oxidative stress and epigenetic changes are potential mechanisms of action.OBJECTIVES: We aimed to examine the associations of individual and mixtures of metal exposures with oxidative stress and DNA methylation among pregnant women.METHODS: We measured a panel of 16 metals and 3 oxidative stress biomarkers including 8-hydroxydeoxyguanosine (8-OHdG), 4-hydroxy-2-nonenal-mercapturic acid (HNE-MA) and 8-isoprostaglandin F2α (8-iso...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Min Zhang Chong Liu Wen-Ding Li Xue-Dan Xu Fei-Peng Cui Pan-Pan Chen Yan-Ling Deng Yu Miao Qiong Luo Jia-Yue Zeng Ting-Ting Lu Tian Shi Qiang Zeng Source Type: research

Green mechano-chemical processing of lignocellulosic biomass for lignin recovery
Chemosphere. 2022 Jan 18:133647. doi: 10.1016/j.chemosphere.2022.133647. Online ahead of print.ABSTRACTLignin extraction from biomass is heavily dependent on chemical processes that are harmful to the environment and the quality of the recovered lignin. Ionic liquid solvents are some of the latest solutions in green processing; however, their implementation for lignin recovery is limited by their high cost, typically high loadings requirements, and long processing times. To overcome these issues, in this study, high loadings of mixed hardwood flour (MHF) were processed with 1-butyl-3-methylimidazolium chloride (BmimCl) in ...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Karelle S Guiao Costas Tzoganakis Tizazu H Mekonnen Source Type: research

Photo-persulfate oxidation and mineralization of benzoic acid: Kinetics and optimization under UVC irradiation
Chemosphere. 2022 Jan 18:133663. doi: 10.1016/j.chemosphere.2022.133663. Online ahead of print.ABSTRACTThe strong oxidant, persulfate (PS, S2O82-), was applied to treat the synthetic wastewater of benzoic acid (BA) under UV irradiation. UVC light initiated a chain reaction that derived the sulfate radical (SO4•-) and hydroxyl radical (HO•) from S2O82- ion. The experiment parameters, including light irradiation (UVA and UVC), pH, dose ratio ([PS]0/[BA]0), initial concentration ([BA]0, mg/L), was optimized based on degradation efficiency and total organic carbon (TOC) removal of BA, which reached up to 100% and 96%...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Valencia Elvira Sugihartono Nicolaus N N Mahasti Yu-Jen Shih Yao-Hui Huang Source Type: research

Enhanced biological phosphorus removal from wastewater by current stimulation coupled with anaerobic digestion
In this study, a synergetic current stimulation system coupled with anaerobic digestion was used to enhance phosphorus removal from wastewater. The effects of current intensity, pH, and methane (CH4) synthesis on phosphorus removal were investigated. As direct current was supplied to an anaerobic bioreactor, the removal of sewage total phosphorus was significantly enhanced. The conditions of weak acid and low negative oxidation-reduction potential facilitated the phosphorus removal from wastewater. The optimal parameters for the dephosphorisation process were a current intensity of 100 mA and a pH of 6.0. When the anaerobi...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Shuo Yu Shugen Liu Xiaofei Yao Ping Ning Source Type: research

Size segregated ionic species collected in a harbour area
Chemosphere. 2022 Jan 18:133693. doi: 10.1016/j.chemosphere.2022.133693. Online ahead of print.ABSTRACTWater-soluble ions were analysed in size segregated aerosol samples collected in the port of Alicante (Southeastern Spain) during summer and winter using a multistage cascade impactor. Seasonal variations in the size distributions of the analysed components and the influence of bulk materials handling (loading/unloading and stockpiling) at the docks were investigated. The size distributions of SO42-, NH4+ and K+ were characterized by prominent peaks in the accumulation and droplet modes, both in summer and winter, while t...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: B Navarro-Selma A Clemente J F Nicol ás J Crespo A Carratal á F Lucarelli F Giardi N Galindo E Yubero Source Type: research

Comparative evaluation of Fe-, Zr-, and La-based metal-organic frameworks derived from recycled PET plastic bottles for arsenate removal
Chemosphere. 2022 Jan 18:133672. doi: 10.1016/j.chemosphere.2022.133672. Online ahead of print.ABSTRACTMetal-organic frameworks (MOFs) derived from recycled polyester (polyethylene terephthalate, PET) bottles were investigated in both batch and column studies for the removal of arsenate. As-synthesized Fe-MOF, Zr-MOF, and La-MOF were systematically analyzed by SEM, PXRD, FTIR, BET, and XPS techniques. The obtained MOFs showed high crystallinity with the specific surface area of 128.3, 290.4, and 61.8 m2/g for Fe-MOF, Zr-MOF, and La-MOF, respectively. The Langmuir isotherm and pseudo-second-order kinetic model simulated ars...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Pandi Kalimuthu Youjin Kim Muthu Prabhu Subbaiah Daewhan Kim Byong-Hun Jeon Jinho Jung Source Type: research

Nitrogen-doping coupled with cerium oxide loading co-modified graphitic carbon nitride for highly enhanced photocatalytic degradation of tetracycline under visible light
Chemosphere. 2022 Jan 18:133648. doi: 10.1016/j.chemosphere.2022.133648. Online ahead of print.ABSTRACTThe increasingly serious pollution of antibiotics brings an enormous threat to the ecological environment and human health. Graphite phase carbon nitride (g-C3N4), as a popular photocatalytic material, is widely used in photocatalytic degradation of antibiotics in water. In order to make up for the shortage of g-C3N4 monomer, CeO2/N-doped g-C3N4 (CeNCN) composite photocatalysts co-modified with nitrogen doping and CeO2 loading were designed and synthesized with the idea of expanding visible light absorption and promoting ...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Fuhang Xu Ning An Cui Lai Mingming Zhang Bisheng Li Shiyu Liu Ling Li Lei Qin Yukui Fu Huan Yi Huchuan Yan Source Type: research

The effects of dietary exposure to Magn éli phase titanium suboxide and titanium dioxide on rainbow trout (Oncorhynchus mykiss)
In this study, for the first time, subchronic effects of dietary intake of Magnéli TiOx were evaluated and compared with TiO2 particles of similar size, in concentrations 0.1% and 0.01% of feed. The experiment consisted of 38 d of an exposition period and 14 d of a depuration period. Minor effects on plasma biochemical profile and morphological parameters were recorded. A reduced count of leukocytes was found in the blood of both Magnéli TiOx and TiO2 exposed fish, suggesting immunotoxic effects. Erythrocytosis was specific for Magnéli TiOx. Indices of oxidative stress, namely increased lipid peroxidat...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Hana Caloudova Jana Blahova Jan Mares Lukas Richtera Ales Franc Michaela Garajov á Frantisek Tichy Jiri Lenz Jana Caloudova Vladimira Enevova Pavel Kopel Barbora Havelkova Pavla Lakdawala Zdenka Svobodova Source Type: research

Blood concentrations of potentially toxic trace elements (PTEs) and correlation with biochemical and hematological parameters in dogs from thrace region, Turkey
Chemosphere. 2022 Jan 18:133649. doi: 10.1016/j.chemosphere.2022.133649. Online ahead of print.ABSTRACTEnvironmental exposure to potentially toxic trace elements (PTEs) leads to health problems in animals as well as in humans. Dogs can be used as bioindicators for health status of both environment, animals and humans. The study material consisted of a total of 140 dogs from Thrace region in Turkey. Essential (Co, Cr, Cu, Fe, Zn) and non-essential (As, Cd, Hg, Ni, Pb) PTEs concentrations of blood samples were determined by ICP-MS. In addition, hemogram (RBC, MCV, MCH, MCHC, HCT, WBC, HGB, PLT) and biochemical parameters (Gl...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Fulya Altinok-Yipel Mustafa Yipel Nuri Altu ğ Nurullah Özdemir Source Type: research

Effects of organic loading rates on high-solids anaerobic digestion of food waste in horizontal flow reactor: Methane production, stability and mechanism
Chemosphere. 2022 Jan 18:133650. doi: 10.1016/j.chemosphere.2022.133650. Online ahead of print.ABSTRACTTo maximize the methane production efficiency of high-solids anaerobic digestion (HSAD) of food waste (FW), a horizontal flow reactor was operated under mesophilic, semi-continuous condition at organic loading rates (OLRs) ranging from 1.00 to 13.80 kg-VS/(m3 d). The gas production, substrate transformation, and microbial community characteristics of the horizontal flow HSAD reactor were evaluated. The results indicated that the methane yield (0.173-0.516 L/(g d)) fluctuated with the increasing OLR, volumetric methane pro...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Huimin Zhou Junqiu Jiang Qingliang Zhao Lili Li Kun Wang Liangliang Wei Source Type: research

Enhanced bioremediation of RDX and Co-Contaminants perchlorate and nitrate using an anaerobic dehalogenating consortium in a fractured rock aquifer
Chemosphere. 2022 Jan 19:133674. doi: 10.1016/j.chemosphere.2022.133674. Online ahead of print.ABSTRACTThe potential neurotoxic and carcinogenic effects of the explosives compound RDX (hexahydro-1,3,5-trinitro-1,3,5-triazine) on human health requires groundwater remediation strategies to meet low cleanup goals. Bioremediation of RDX is feasible through biostimulation of native microbes with an organic carbon donor but may be less efficient, or not occur at all, in the presence of the common co-contaminants perchlorate and nitrate. Laboratory tests compared biostimulation with bioaugmentation to achieve anaerobic degradatio...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Michelle M Lorah Eric Vogler Fredrick E Gebhardt Duane Graves Jennifer Fedorowski Grabowski Source Type: research

Health risk of fluorine in soil from a phosphorus industrial area based on the in-vitro oral, inhalation, and dermal bioaccessibility
Chemosphere. 2022 Jan 19:133714. doi: 10.1016/j.chemosphere.2022.133714. Online ahead of print.ABSTRACTHealth risk of F in soil is of special concern due to the continuously elevated concentration of F in soil. However, there is still a dearth of risk assessments of F in soil based on in-vitro bioaccessibility posed by multiple exposure routes. Herein, the oral, inhalation, and dermal bioaccessibility of F in soil was firstly obtained by adapting and combining in-vitro methods, which then was introduced to remedy an information gap of a comprehensive risk of F in soil posed by a multi-exposure pathway. Combined in-vitro te...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Ya-Qi Yu Hou-Qiao Luo Jin-Yan Yang Source Type: research

Different metal-doped ZnS quantum dots photocatalysts for enhancing the permeability and antifouling performances of polysulfone membranes with and without UV irradiation
In this study, the effect of three different transition metal ion dopants (Mn2+, Fe2+, and Co2+) on the characteristics of zinc sulfide (ZnS) quantum dots (QDs) was investigated and the obtained QDs photocatalysts were applied for the modification of polysulfone (PSf) mixed matrix membranes to reduce membrane fouling. The synthesized QDs and fabricated membranes were fully identified with SEM, TEM, AFM, FTIR analyses, and also underwent porosity and contact angle tests. Flux recovery ratios (FRR) significantly increased from 69.8% (bare) to 85.0% (1% Fe-doped ZnS QDs) after modification of membranes with metal-doped QDs. T...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Vahid Vatanpour Okan Karatas Saba Amiri Hamid Reza Rajabi Ismail Koyuncu Alireza Khataee Source Type: research

Modelling and simulation of food waste bio-drying
Chemosphere. 2022 Jan 19:133711. doi: 10.1016/j.chemosphere.2022.133711. Online ahead of print.ABSTRACTBio-drying of food waste is an attractive aerobic treatment method for moisture removal and producing refuse-derived fuel (RDF) beneficial for waste utilization as an energy source. Understanding the mechanism of process and interaction of key variables is necessary for optimizing the parameters to improve the water removal rate. In the present study, an attempt was made to develop mass and energy balances using the first principles to predict the variation of key variables namely concentration of degradable matter, moist...
Source: Chemosphere - January 22, 2022 Category: Chemistry Authors: Ani Lawrance Mani Veera Santhoshi Gollapalli S Savithri Ajit Haridas A Arunagiri Source Type: research