SuFEx modification of silk fibroin silicon aerogel and its adsorption behavior and antibacterial performance
Chemosphere. 2021 Sep 20;287(Pt 3):132291. doi: 10.1016/j.chemosphere.2021.132291. Online ahead of print.ABSTRACTA silk fibroin silicon-based composite aerogel (SSA) has been modified via a SuFEx reaction for application in the adsorption of anionic pollutants and antimicrobials in water. The tyrosine fragment in the silk fibroin was modified by a high yielding SuFEx click reaction. A quaternary ammonium salt functionality was introduced into the silk fibroin protein and the modified silk fibroin protein was crosslinked with tetraethyl orthosilicate. The aerogel was then prepared by freeze-drying. The aerogel obtained has ...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Yutao Zhu Peiyang Gu Haibo Wan Shiyan Zhou Jinghui He Hua Li Najun Li Qingfeng Xu Jianmei Lu Source Type: research

Natural and anthropogenic sources of solutes in the wet precipitation of a densely populated city of Southern South America
This article analyzes the chemical composition dynamics of individual rainfall events collected over a three-year period in the densely populated city of Córdoba (Argentina). The main purpose is to identify the natural and/or anthropogenic sources, and the extent to which they determine the seasonal chemical signature exhibited by wet precipitation in the heart of the South Eastern South America. The results reveal that, despite geogenic components are only minor constituents of the airborne particles in downtown Córdoba, they appear to be the main source of solutes in rainwaters, also responsible for the alk...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: M G Garcia K L Lecomte P J Depetris Source Type: research

Exposure to the real ambient air pollutants alters the composition of nasal mucosa bacteria in the rat model
This study aimed to explore the composition of nasal mucosa microbiota after exposure to real-ambient air pollutants with a special system. We monitored PM2.5, O3, etc. in the system and confirmed PM2.5 and O3 were the main pollutants. SD rats were exposed to the system for 16 weeks in summer or 22 weeks in autumn-winter. The concentrations of PM2.5 were 24.00 μg/m3 in the Summer stage and 22.21 μg/m3 in the autumn-winter stage. The O3 concentrations were 25.46 and 13.55 μg/m3, respectively. Exposure altered bacterial beta diversity in the summer stage. There were 4 and 3 different bacteria at the king, order, fam...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Tenglong Yan Weiwei Wang Jiao Xia Jiaxin Jia Jiayu Xu Mo Dan Shupei Zhou Piye Niu Shusheng Gong Zhangjian Chen Yi Bai Tian Chen Guang Jia Source Type: research

Comparative analysis on the photolysis kinetics of four neonicotinoid pesticides and their photo-induced toxicity to Vibrio Fischeri: Pathway and toxic mechanism
Chemosphere. 2021 Sep 20;287(Pt 3):132303. doi: 10.1016/j.chemosphere.2021.132303. Online ahead of print.ABSTRACTNeonicotinoids are widely used pesticides all over the world and pose severe water pollution. Although they can be degraded via absorbing sunlight, few attentions have been paid to the environmental risks of their photolysis products. In this paper, the photo-toxicity was investigated for four neonicotinoids (dinotefuran, nitenpyram, thiamethoxam and clothianidin) based on a series of experiments (i.e., photolysis kinetics, radical scavenging, bioluminescent inhibition test to Vibrio Fischeri and intermediate id...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Lingyun Fan Jia Wang Ying Huang Limin Su Chao Li Yuan Hui Zhao Christopher J Martyniuk Source Type: research

Application of hybrid MOF composite in extraction of f-block elements: Experimental and computational investigation
Chemosphere. 2021 Sep 9;287(Pt 3):132232. doi: 10.1016/j.chemosphere.2021.132232. Online ahead of print.ABSTRACTAn attempt was made to understand the sorption behaviour of UO22+, Th4+ and Eu3+ on novel hybrid metal-organic framework composites, FeBDC@CoBDC. The XRD pattern revealed the composite nature of the hybrid MOF materials, while FTIR and Raman spectroscopic analyses evidenced the presence of different functional moieties. The thermal stability of the hybrid MOF composites was investigated through thermogravimetric analysis. The sorption predominantly followed Langmuir isotherm with sorption capacity of 189 mg g-1, ...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Gauri Salunkhe Arijit Sengupta Anil Boda Roxana Paz Nishesh Kumar Gupta Carolina Leyva Rohit Singh Chauhan Sk Musharaf Ali Source Type: research

Production and assessment of the biodegradation and ecotoxicity of xylan- and starch-based bioplastics
This study aimed at developing bioplastics from a mixture of starch and xylan in variable ratios, and the combined effect of α-cellulose and holocellulose extracted from sugarcane bagasse added to the process. The disintegration of bioplastics was evaluated in both soil and composting. The ecotoxicity analyses with Saccharomyces cerevisiae, Bacillus subtilis and seeds of Cucumis sativus were conducted after disintegration. All formulations based on 5% (w/v) of total polysaccharides were dried at 30 °C and resulted in homogeneous and non-brittle bioplastics. The composting results showed that all bioplastic formul...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Mateus Manabu Abe Marcia Cristina Branciforti Renato Nallin Montagnolli Maria Aparecida Marin Morales Ana Paula Jacobus Michel Brienzo Source Type: research

Nano-TiO < sub > 2 < /sub > aggravates bioaccumulation and developmental neurotoxicity of triphenyl phosphate in zebrafish larvae
This study explored the combined effects of titanium dioxide nanoparticles (nano-TiO2) and triphenyl phosphate (TPhP) on the neurodevelopment of zebrafish larvae as well as the underlying mechanisms. With this regard, zebrafish embryos were exposed to nano-TiO2 of 100 μg·L-1, TPhP of 0, 8, 24, 72, and 144 μg·L-1, or their combinations until 120 h post-fertilization (hpf). Results indicated 100 μg·L-1 nano-TiO2 alone to be nontoxic to zebrafish larvae. However, obvious developmental toxicity manifested as inhibition of surviving rate, heart rate and body length as well as increased malformation...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Boya Fan Lili Dai Chunsheng Liu Qian Sun Liqin Yu Source Type: research

Treatment of ladle furnace slag by carbonation: Carbon dioxide sequestration, heavy metal immobilization, and strength enhancement
Chemosphere. 2021 Sep 20;287(Pt 3):132274. doi: 10.1016/j.chemosphere.2021.132274. Online ahead of print.ABSTRACTLadle furnace slag (LFS) is a by-product of the steel industry and is difficult to be reused due to its weak cementitious property, low strength, and potential leaching of heavy metals. The emission of carbon dioxide (CO2) is also a concern for the steel industry. Therefore, the aim of this study was to use CO2 to immobilize heavy metals in LFS and enhance its strength. The LFS specimens were carbonated with different initial water contents, CO2 pressures, and carbonation periods. The carbonated LFS were then st...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Bo Xu Yaolin Yi Source Type: research

Comparison of bioconcentration and kinetics of GenX in tilapia Oreochromis mossambicus in fresh and brackish water
Chemosphere. 2021 Sep 21;287(Pt 3):132289. doi: 10.1016/j.chemosphere.2021.132289. Online ahead of print.ABSTRACTContaminants of emerging concern (CEC) are a broad suite of chemicals commonly found in the environment, aquatic organisms and even drinking water. They include pharmaceuticals, personal care products, industrial chemicals and compounds added to consumer products. The CEC ammonium 2,3,3,3-tetrafluoro-2-heptafluoropropoxy propanoic acid, which is more commonly known as generic name GenX, is a replacement of common processing aid longer chain perfluorinated compounds (PFAS) due to a manufacturing shift in 2002 fol...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Samreen Siddiqui Mason Fitzwater John Scarpa Jeremy L Conkle Source Type: research

Insights into the hydrated electron generation from UV/aniline: Mechanism and quantum efficiency
This study introduced a novel pathway of eaq- generation during the photolysis of aniline and provided a new perspective for eaq--based advanced reduction processes.PMID:34562711 | DOI:10.1016/j.chemosphere.2021.132292 (Source: Chemosphere)
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Xiaoping Yu Ling Tan Yalin Yu Yun Xia Zhen Guan Jia Gu Jing Wang Huan Chen Fang Jiang Source Type: research

SuFEx modification of silk fibroin silicon aerogel and its adsorption behavior and antibacterial performance
Chemosphere. 2021 Sep 20;287(Pt 3):132291. doi: 10.1016/j.chemosphere.2021.132291. Online ahead of print.ABSTRACTA silk fibroin silicon-based composite aerogel (SSA) has been modified via a SuFEx reaction for application in the adsorption of anionic pollutants and antimicrobials in water. The tyrosine fragment in the silk fibroin was modified by a high yielding SuFEx click reaction. A quaternary ammonium salt functionality was introduced into the silk fibroin protein and the modified silk fibroin protein was crosslinked with tetraethyl orthosilicate. The aerogel was then prepared by freeze-drying. The aerogel obtained has ...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Yutao Zhu Peiyang Gu Haibo Wan Shiyan Zhou Jinghui He Hua Li Najun Li Qingfeng Xu Jianmei Lu Source Type: research

Natural and anthropogenic sources of solutes in the wet precipitation of a densely populated city of Southern South America
This article analyzes the chemical composition dynamics of individual rainfall events collected over a three-year period in the densely populated city of Córdoba (Argentina). The main purpose is to identify the natural and/or anthropogenic sources, and the extent to which they determine the seasonal chemical signature exhibited by wet precipitation in the heart of the South Eastern South America. The results reveal that, despite geogenic components are only minor constituents of the airborne particles in downtown Córdoba, they appear to be the main source of solutes in rainwaters, also responsible for the alk...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: M G Garcia K L Lecomte P J Depetris Source Type: research

Exposure to the real ambient air pollutants alters the composition of nasal mucosa bacteria in the rat model
This study aimed to explore the composition of nasal mucosa microbiota after exposure to real-ambient air pollutants with a special system. We monitored PM2.5, O3, etc. in the system and confirmed PM2.5 and O3 were the main pollutants. SD rats were exposed to the system for 16 weeks in summer or 22 weeks in autumn-winter. The concentrations of PM2.5 were 24.00 μg/m3 in the Summer stage and 22.21 μg/m3 in the autumn-winter stage. The O3 concentrations were 25.46 and 13.55 μg/m3, respectively. Exposure altered bacterial beta diversity in the summer stage. There were 4 and 3 different bacteria at the king, order, fam...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Tenglong Yan Weiwei Wang Jiao Xia Jiaxin Jia Jiayu Xu Mo Dan Shupei Zhou Piye Niu Shusheng Gong Zhangjian Chen Yi Bai Tian Chen Guang Jia Source Type: research

Comparative analysis on the photolysis kinetics of four neonicotinoid pesticides and their photo-induced toxicity to Vibrio Fischeri: Pathway and toxic mechanism
Chemosphere. 2021 Sep 20;287(Pt 3):132303. doi: 10.1016/j.chemosphere.2021.132303. Online ahead of print.ABSTRACTNeonicotinoids are widely used pesticides all over the world and pose severe water pollution. Although they can be degraded via absorbing sunlight, few attentions have been paid to the environmental risks of their photolysis products. In this paper, the photo-toxicity was investigated for four neonicotinoids (dinotefuran, nitenpyram, thiamethoxam and clothianidin) based on a series of experiments (i.e., photolysis kinetics, radical scavenging, bioluminescent inhibition test to Vibrio Fischeri and intermediate id...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Lingyun Fan Jia Wang Ying Huang Limin Su Chao Li Yuan Hui Zhao Christopher J Martyniuk Source Type: research

Application of hybrid MOF composite in extraction of f-block elements: Experimental and computational investigation
Chemosphere. 2021 Sep 9;287(Pt 3):132232. doi: 10.1016/j.chemosphere.2021.132232. Online ahead of print.ABSTRACTAn attempt was made to understand the sorption behaviour of UO22+, Th4+ and Eu3+ on novel hybrid metal-organic framework composites, FeBDC@CoBDC. The XRD pattern revealed the composite nature of the hybrid MOF materials, while FTIR and Raman spectroscopic analyses evidenced the presence of different functional moieties. The thermal stability of the hybrid MOF composites was investigated through thermogravimetric analysis. The sorption predominantly followed Langmuir isotherm with sorption capacity of 189 mg g-1, ...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Gauri Salunkhe Arijit Sengupta Anil Boda Roxana Paz Nishesh Kumar Gupta Carolina Leyva Rohit Singh Chauhan Sk Musharaf Ali Source Type: research

Production and assessment of the biodegradation and ecotoxicity of xylan- and starch-based bioplastics
This study aimed at developing bioplastics from a mixture of starch and xylan in variable ratios, and the combined effect of α-cellulose and holocellulose extracted from sugarcane bagasse added to the process. The disintegration of bioplastics was evaluated in both soil and composting. The ecotoxicity analyses with Saccharomyces cerevisiae, Bacillus subtilis and seeds of Cucumis sativus were conducted after disintegration. All formulations based on 5% (w/v) of total polysaccharides were dried at 30 °C and resulted in homogeneous and non-brittle bioplastics. The composting results showed that all bioplastic formul...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Mateus Manabu Abe Marcia Cristina Branciforti Renato Nallin Montagnolli Maria Aparecida Marin Morales Ana Paula Jacobus Michel Brienzo Source Type: research

Nano-TiO < sub > 2 < /sub > aggravates bioaccumulation and developmental neurotoxicity of triphenyl phosphate in zebrafish larvae
This study explored the combined effects of titanium dioxide nanoparticles (nano-TiO2) and triphenyl phosphate (TPhP) on the neurodevelopment of zebrafish larvae as well as the underlying mechanisms. With this regard, zebrafish embryos were exposed to nano-TiO2 of 100 μg·L-1, TPhP of 0, 8, 24, 72, and 144 μg·L-1, or their combinations until 120 h post-fertilization (hpf). Results indicated 100 μg·L-1 nano-TiO2 alone to be nontoxic to zebrafish larvae. However, obvious developmental toxicity manifested as inhibition of surviving rate, heart rate and body length as well as increased malformation...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Boya Fan Lili Dai Chunsheng Liu Qian Sun Liqin Yu Source Type: research

Treatment of ladle furnace slag by carbonation: Carbon dioxide sequestration, heavy metal immobilization, and strength enhancement
Chemosphere. 2021 Sep 20;287(Pt 3):132274. doi: 10.1016/j.chemosphere.2021.132274. Online ahead of print.ABSTRACTLadle furnace slag (LFS) is a by-product of the steel industry and is difficult to be reused due to its weak cementitious property, low strength, and potential leaching of heavy metals. The emission of carbon dioxide (CO2) is also a concern for the steel industry. Therefore, the aim of this study was to use CO2 to immobilize heavy metals in LFS and enhance its strength. The LFS specimens were carbonated with different initial water contents, CO2 pressures, and carbonation periods. The carbonated LFS were then st...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Bo Xu Yaolin Yi Source Type: research

Comparison of bioconcentration and kinetics of GenX in tilapia Oreochromis mossambicus in fresh and brackish water
Chemosphere. 2021 Sep 21;287(Pt 3):132289. doi: 10.1016/j.chemosphere.2021.132289. Online ahead of print.ABSTRACTContaminants of emerging concern (CEC) are a broad suite of chemicals commonly found in the environment, aquatic organisms and even drinking water. They include pharmaceuticals, personal care products, industrial chemicals and compounds added to consumer products. The CEC ammonium 2,3,3,3-tetrafluoro-2-heptafluoropropoxy propanoic acid, which is more commonly known as generic name GenX, is a replacement of common processing aid longer chain perfluorinated compounds (PFAS) due to a manufacturing shift in 2002 fol...
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Samreen Siddiqui Mason Fitzwater John Scarpa Jeremy L Conkle Source Type: research

Insights into the hydrated electron generation from UV/aniline: Mechanism and quantum efficiency
This study introduced a novel pathway of eaq- generation during the photolysis of aniline and provided a new perspective for eaq--based advanced reduction processes.PMID:34562711 | DOI:10.1016/j.chemosphere.2021.132292 (Source: Chemosphere)
Source: Chemosphere - September 25, 2021 Category: Chemistry Authors: Xiaoping Yu Ling Tan Yalin Yu Yun Xia Zhen Guan Jia Gu Jing Wang Huan Chen Fang Jiang Source Type: research

Development of mathematical model and experimental Validation for batch bio-drying of municipal solid waste: Mass balances
Chemosphere. 2021 Sep 18;287(Pt 3):132272. doi: 10.1016/j.chemosphere.2021.132272. Online ahead of print.ABSTRACTBio-drying of solid waste is a complex process that involves anoxic hydrolysis, aerobic oxidation, evaporation, absorption, and condensation. To understand the interaction between different variables (concentration of volatile matter, moisture, microbial biomass, and temperature) and to predict the system performance, a powerful tool is necessary for improved drying rates. Hence, a mathematical model of mass balances of the batch bio-drying of municipal solid waste (MSW), associated with rate equations of evapor...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Ani Lawrance Ajit Haridas S Savithri A Arunagiri Source Type: research

Utilization of fruit and vegetable waste to produce value-added products: Conventional utilization and emerging opportunities-A review
Chemosphere. 2021 Sep 9;287(Pt 3):132221. doi: 10.1016/j.chemosphere.2021.132221. Online ahead of print.ABSTRACTFruit and vegetables are one of the most consumed commodities globally, accounting for more than 42% of total food wastage. These vegetal foods can be consumed raw, processed, or taken as an addition to other food items. The continuous rise in population, in addition to technological advancements, has led to an imbalance in demand supply, resulting in increased food wastage globally. Although source reduction and recycling have shown promising results, more evaluations concerning economics and environmental impac...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: K Selva Ganesh Adithya Sridhar S Vishali Source Type: research

Novel micro-granular sludge process for highly efficient treatment of low-strength and low C/N ratio municipal wastewater
Chemosphere. 2021 Sep 20;287(Pt 3):132322. doi: 10.1016/j.chemosphere.2021.132322. Online ahead of print.ABSTRACTA novel high-concentration powder bio-carrier (HPB) process was developed for the high-load treatment of low-strength municipal wastewater with low carbon/nitrogen (C/N) ratio (∼3). The powder carrier facilitated the rapid micro-granulation of sludge within 20 days and the average particle size increased rapidly from 47 μm to 210 μm. Accordingly, the concentration of mixed liquid volatile suspended solids (MLVSS) increased from 1.8 g/L to 4.3 g/L, which enabled the HPB process to maintain a short hydra...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Boran Wu Xiuzhong Wang Chengxian Wang Bin Lu Jing Yi Xiaohu Dai Xiaoli Chai Source Type: research

Effect of surfactants on phosphorus release and acidogenic fermentation of waste activated sludge containing different aluminium phosphate forms
Chemosphere. 2021 Sep 10;287(Pt 3):132213. doi: 10.1016/j.chemosphere.2021.132213. Online ahead of print.ABSTRACTThe effects of different surfactants (rhamnolipid, trehalolipid and citrate) on phosphorus (P) release and acidogenic fermentation of waste activated sludge (WAS) containing different aluminium phosphate forms (AlPO4, Al(PO3)3) were investigated. Results showed that rhamnolipid was the most effective surfactant to release P from aluminum phosphates (AlPs)-rich sludge. Al(PO3)3 was easier to release P than AlPO4 in WAS due to their different crystal structures. Different surfactants promoted the production of dif...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Qian Ping Jingyi Zhang Ruijie Tang Shuting Liao Zhipeng Zhang Yongmei Li Source Type: research

Poplar tree (Populus balsamifera L.) as indicator of mercury emission from a point source
Chemosphere. 2021 Sep 11;287(Pt 3):132157. doi: 10.1016/j.chemosphere.2021.132157. Online ahead of print.ABSTRACTThe article provides original data on the ecological and geochemical characteristics of the distribution of Hg in the leaves and annual rings of balsam poplar (P. balsamifera L.) in the zone of influence of lithium production (Novosibirsk). In 2017 high Hg concentration (1300 ng/g) in the poplar leaves was recorded in the northeastern part of the city near the industrial facility of the lithium plant. The investigation showed a clear trend of increased Hg accumulation in the poplar leaves during the growing seas...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: D V Yusupov E E Lyapina E M Tursunalieva N A Osipova N V Baranovskaya Source Type: research

Riverine flux of dissolved phosphorus to the coastal sea may be overestimated, especially in estuaries of gated rivers: Implications of phosphorus adsorption/desorption on suspended sediments
Chemosphere. 2021 Sep 8;287(Pt 3):132206. doi: 10.1016/j.chemosphere.2021.132206. Online ahead of print.ABSTRACTThe flux of terrestrial dissolved inorganic phosphorous (DIP, i.e. PO43-) via rivers into coastal seas is usually calculated by simply multiplying its concentration with the corresponding water flow at the river mouth. Subsequent adsorption/desorption of DIP onto suspended sediment and the influence of salinity in the estuary are often overlooked. A series of DIP adsorption/desorption experiments under different salinities (0, 5, 15, 30) and suspended sediment concentrations (1-40 g L-1) were conducted in order t...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Shiyu Wang Rolf D Vogt Jacob Carstensen Yan Lin Jianfeng Feng Xueqiang Lu Source Type: research

A review on recent trends in the removal of emerging contaminants from aquatic environment using low-cost adsorbents
This article reviews replacing costly adsorbents with agriculture-based biomass that are abundant, inexpensive, and biodegradable and possess excellent adsorption capacity. The objectives of this article is to look at adsorption as a viable treatment option for emerging pollutants, as well as sophisticated and cost-effective emerging contaminants treatment options.PMID:34560497 | DOI:10.1016/j.chemosphere.2021.132270 (Source: Chemosphere)
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: M Varsha P Senthil Kumar B Senthil Rathi Source Type: research

Bioaerosolization and pathogen transmission in wastewater treatment plants: Microbial composition, emission rate, factors affecting and control measures
Chemosphere. 2021 Sep 8;287(Pt 3):132180. doi: 10.1016/j.chemosphere.2021.132180. Online ahead of print.ABSTRACTEnvironmental consequences during wastewater management are vital and getting increased attention to interrupt any possible disease transmission pathways. Evidence of bioaerosolization of pathogen from wastewater to atmosphere during wastewater treatment have been highlighted previously. Understanding aerosol-based transmission in wastewater treatment plant (WWTP) is important because of the hazard it presents to the workers involved or to the population around and appears to be very significant during pandemic o...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Sampriti Kataki Rupam Patowary Soumya Chatterjee Mohan G Vairale Sonika Sharma Sanjai K Dwivedi Dev Vrat Kamboj Source Type: research

Introducing of Li < sub > 2 < /sub > FeMn < sub > 3 < /sub > O < sub > 8 < /sub > /C-C < sub > 3 < /sub > N < sub > 4 < /sub > /IL nanocomposite for electrochemical determination of pantoprazole sodium in real samples
Chemosphere. 2021 Sep 20;287(Pt 3):132311. doi: 10.1016/j.chemosphere.2021.132311. Online ahead of print.ABSTRACTA new electrochemical sensor based on Li2FeMn3O8/C-C3N4 (LFMO/CCN)/1-ethyl-3-methylimidazolium chloride modified carbon paste electrode (CPE) has been constructed to measure pantoprazole sodium (PNZS). The electrochemical impedance spectroscopy (EIS) method was employed to evaluate the electrode charge-transfer resistances. Moreover, the differential pulse voltammetry method was used to detect PNZS in phosphate buffer solution (PBS) at pH 7.0. The detection limit of 80.0 × 10-9 M and 10.9 × 10-7 M wa...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Neda Ziaie Mehdi Shabani-Nooshabadi Source Type: research

Development of mathematical model and experimental Validation for batch bio-drying of municipal solid waste: Mass balances
Chemosphere. 2021 Sep 18;287(Pt 3):132272. doi: 10.1016/j.chemosphere.2021.132272. Online ahead of print.ABSTRACTBio-drying of solid waste is a complex process that involves anoxic hydrolysis, aerobic oxidation, evaporation, absorption, and condensation. To understand the interaction between different variables (concentration of volatile matter, moisture, microbial biomass, and temperature) and to predict the system performance, a powerful tool is necessary for improved drying rates. Hence, a mathematical model of mass balances of the batch bio-drying of municipal solid waste (MSW), associated with rate equations of evapor...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Ani Lawrance Ajit Haridas S Savithri A Arunagiri Source Type: research

Utilization of fruit and vegetable waste to produce value-added products: Conventional utilization and emerging opportunities-A review
Chemosphere. 2021 Sep 9;287(Pt 3):132221. doi: 10.1016/j.chemosphere.2021.132221. Online ahead of print.ABSTRACTFruit and vegetables are one of the most consumed commodities globally, accounting for more than 42% of total food wastage. These vegetal foods can be consumed raw, processed, or taken as an addition to other food items. The continuous rise in population, in addition to technological advancements, has led to an imbalance in demand supply, resulting in increased food wastage globally. Although source reduction and recycling have shown promising results, more evaluations concerning economics and environmental impac...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: K Selva Ganesh Adithya Sridhar S Vishali Source Type: research

Novel micro-granular sludge process for highly efficient treatment of low-strength and low C/N ratio municipal wastewater
Chemosphere. 2021 Sep 20;287(Pt 3):132322. doi: 10.1016/j.chemosphere.2021.132322. Online ahead of print.ABSTRACTA novel high-concentration powder bio-carrier (HPB) process was developed for the high-load treatment of low-strength municipal wastewater with low carbon/nitrogen (C/N) ratio (∼3). The powder carrier facilitated the rapid micro-granulation of sludge within 20 days and the average particle size increased rapidly from 47 μm to 210 μm. Accordingly, the concentration of mixed liquid volatile suspended solids (MLVSS) increased from 1.8 g/L to 4.3 g/L, which enabled the HPB process to maintain a short hydra...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Boran Wu Xiuzhong Wang Chengxian Wang Bin Lu Jing Yi Xiaohu Dai Xiaoli Chai Source Type: research

Effect of surfactants on phosphorus release and acidogenic fermentation of waste activated sludge containing different aluminium phosphate forms
Chemosphere. 2021 Sep 10;287(Pt 3):132213. doi: 10.1016/j.chemosphere.2021.132213. Online ahead of print.ABSTRACTThe effects of different surfactants (rhamnolipid, trehalolipid and citrate) on phosphorus (P) release and acidogenic fermentation of waste activated sludge (WAS) containing different aluminium phosphate forms (AlPO4, Al(PO3)3) were investigated. Results showed that rhamnolipid was the most effective surfactant to release P from aluminum phosphates (AlPs)-rich sludge. Al(PO3)3 was easier to release P than AlPO4 in WAS due to their different crystal structures. Different surfactants promoted the production of dif...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Qian Ping Jingyi Zhang Ruijie Tang Shuting Liao Zhipeng Zhang Yongmei Li Source Type: research

Poplar tree (Populus balsamifera L.) as indicator of mercury emission from a point source
Chemosphere. 2021 Sep 11;287(Pt 3):132157. doi: 10.1016/j.chemosphere.2021.132157. Online ahead of print.ABSTRACTThe article provides original data on the ecological and geochemical characteristics of the distribution of Hg in the leaves and annual rings of balsam poplar (P. balsamifera L.) in the zone of influence of lithium production (Novosibirsk). In 2017 high Hg concentration (1300 ng/g) in the poplar leaves was recorded in the northeastern part of the city near the industrial facility of the lithium plant. The investigation showed a clear trend of increased Hg accumulation in the poplar leaves during the growing seas...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: D V Yusupov E E Lyapina E M Tursunalieva N A Osipova N V Baranovskaya Source Type: research

Riverine flux of dissolved phosphorus to the coastal sea may be overestimated, especially in estuaries of gated rivers: Implications of phosphorus adsorption/desorption on suspended sediments
Chemosphere. 2021 Sep 8;287(Pt 3):132206. doi: 10.1016/j.chemosphere.2021.132206. Online ahead of print.ABSTRACTThe flux of terrestrial dissolved inorganic phosphorous (DIP, i.e. PO43-) via rivers into coastal seas is usually calculated by simply multiplying its concentration with the corresponding water flow at the river mouth. Subsequent adsorption/desorption of DIP onto suspended sediment and the influence of salinity in the estuary are often overlooked. A series of DIP adsorption/desorption experiments under different salinities (0, 5, 15, 30) and suspended sediment concentrations (1-40 g L-1) were conducted in order t...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Shiyu Wang Rolf D Vogt Jacob Carstensen Yan Lin Jianfeng Feng Xueqiang Lu Source Type: research

A review on recent trends in the removal of emerging contaminants from aquatic environment using low-cost adsorbents
This article reviews replacing costly adsorbents with agriculture-based biomass that are abundant, inexpensive, and biodegradable and possess excellent adsorption capacity. The objectives of this article is to look at adsorption as a viable treatment option for emerging pollutants, as well as sophisticated and cost-effective emerging contaminants treatment options.PMID:34560497 | DOI:10.1016/j.chemosphere.2021.132270 (Source: Chemosphere)
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: M Varsha P Senthil Kumar B Senthil Rathi Source Type: research

Bioaerosolization and pathogen transmission in wastewater treatment plants: Microbial composition, emission rate, factors affecting and control measures
Chemosphere. 2021 Sep 8;287(Pt 3):132180. doi: 10.1016/j.chemosphere.2021.132180. Online ahead of print.ABSTRACTEnvironmental consequences during wastewater management are vital and getting increased attention to interrupt any possible disease transmission pathways. Evidence of bioaerosolization of pathogen from wastewater to atmosphere during wastewater treatment have been highlighted previously. Understanding aerosol-based transmission in wastewater treatment plant (WWTP) is important because of the hazard it presents to the workers involved or to the population around and appears to be very significant during pandemic o...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Sampriti Kataki Rupam Patowary Soumya Chatterjee Mohan G Vairale Sonika Sharma Sanjai K Dwivedi Dev Vrat Kamboj Source Type: research

Introducing of Li < sub > 2 < /sub > FeMn < sub > 3 < /sub > O < sub > 8 < /sub > /C-C < sub > 3 < /sub > N < sub > 4 < /sub > /IL nanocomposite for electrochemical determination of pantoprazole sodium in real samples
Chemosphere. 2021 Sep 20;287(Pt 3):132311. doi: 10.1016/j.chemosphere.2021.132311. Online ahead of print.ABSTRACTA new electrochemical sensor based on Li2FeMn3O8/C-C3N4 (LFMO/CCN)/1-ethyl-3-methylimidazolium chloride modified carbon paste electrode (CPE) has been constructed to measure pantoprazole sodium (PNZS). The electrochemical impedance spectroscopy (EIS) method was employed to evaluate the electrode charge-transfer resistances. Moreover, the differential pulse voltammetry method was used to detect PNZS in phosphate buffer solution (PBS) at pH 7.0. The detection limit of 80.0 × 10-9 M and 10.9 × 10-7 M wa...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Neda Ziaie Mehdi Shabani-Nooshabadi Source Type: research

Development of mathematical model and experimental Validation for batch bio-drying of municipal solid waste: Mass balances
Chemosphere. 2021 Sep 18;287(Pt 3):132272. doi: 10.1016/j.chemosphere.2021.132272. Online ahead of print.ABSTRACTBio-drying of solid waste is a complex process that involves anoxic hydrolysis, aerobic oxidation, evaporation, absorption, and condensation. To understand the interaction between different variables (concentration of volatile matter, moisture, microbial biomass, and temperature) and to predict the system performance, a powerful tool is necessary for improved drying rates. Hence, a mathematical model of mass balances of the batch bio-drying of municipal solid waste (MSW), associated with rate equations of evapor...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Ani Lawrance Ajit Haridas S Savithri A Arunagiri Source Type: research

Utilization of fruit and vegetable waste to produce value-added products: Conventional utilization and emerging opportunities-A review
Chemosphere. 2021 Sep 9;287(Pt 3):132221. doi: 10.1016/j.chemosphere.2021.132221. Online ahead of print.ABSTRACTFruit and vegetables are one of the most consumed commodities globally, accounting for more than 42% of total food wastage. These vegetal foods can be consumed raw, processed, or taken as an addition to other food items. The continuous rise in population, in addition to technological advancements, has led to an imbalance in demand supply, resulting in increased food wastage globally. Although source reduction and recycling have shown promising results, more evaluations concerning economics and environmental impac...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: K Selva Ganesh Adithya Sridhar S Vishali Source Type: research

Novel micro-granular sludge process for highly efficient treatment of low-strength and low C/N ratio municipal wastewater
Chemosphere. 2021 Sep 20;287(Pt 3):132322. doi: 10.1016/j.chemosphere.2021.132322. Online ahead of print.ABSTRACTA novel high-concentration powder bio-carrier (HPB) process was developed for the high-load treatment of low-strength municipal wastewater with low carbon/nitrogen (C/N) ratio (∼3). The powder carrier facilitated the rapid micro-granulation of sludge within 20 days and the average particle size increased rapidly from 47 μm to 210 μm. Accordingly, the concentration of mixed liquid volatile suspended solids (MLVSS) increased from 1.8 g/L to 4.3 g/L, which enabled the HPB process to maintain a short hydra...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Boran Wu Xiuzhong Wang Chengxian Wang Bin Lu Jing Yi Xiaohu Dai Xiaoli Chai Source Type: research

Effect of surfactants on phosphorus release and acidogenic fermentation of waste activated sludge containing different aluminium phosphate forms
Chemosphere. 2021 Sep 10;287(Pt 3):132213. doi: 10.1016/j.chemosphere.2021.132213. Online ahead of print.ABSTRACTThe effects of different surfactants (rhamnolipid, trehalolipid and citrate) on phosphorus (P) release and acidogenic fermentation of waste activated sludge (WAS) containing different aluminium phosphate forms (AlPO4, Al(PO3)3) were investigated. Results showed that rhamnolipid was the most effective surfactant to release P from aluminum phosphates (AlPs)-rich sludge. Al(PO3)3 was easier to release P than AlPO4 in WAS due to their different crystal structures. Different surfactants promoted the production of dif...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Qian Ping Jingyi Zhang Ruijie Tang Shuting Liao Zhipeng Zhang Yongmei Li Source Type: research

Poplar tree (Populus balsamifera L.) as indicator of mercury emission from a point source
Chemosphere. 2021 Sep 11;287(Pt 3):132157. doi: 10.1016/j.chemosphere.2021.132157. Online ahead of print.ABSTRACTThe article provides original data on the ecological and geochemical characteristics of the distribution of Hg in the leaves and annual rings of balsam poplar (P. balsamifera L.) in the zone of influence of lithium production (Novosibirsk). In 2017 high Hg concentration (1300 ng/g) in the poplar leaves was recorded in the northeastern part of the city near the industrial facility of the lithium plant. The investigation showed a clear trend of increased Hg accumulation in the poplar leaves during the growing seas...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: D V Yusupov E E Lyapina E M Tursunalieva N A Osipova N V Baranovskaya Source Type: research

Riverine flux of dissolved phosphorus to the coastal sea may be overestimated, especially in estuaries of gated rivers: Implications of phosphorus adsorption/desorption on suspended sediments
Chemosphere. 2021 Sep 8;287(Pt 3):132206. doi: 10.1016/j.chemosphere.2021.132206. Online ahead of print.ABSTRACTThe flux of terrestrial dissolved inorganic phosphorous (DIP, i.e. PO43-) via rivers into coastal seas is usually calculated by simply multiplying its concentration with the corresponding water flow at the river mouth. Subsequent adsorption/desorption of DIP onto suspended sediment and the influence of salinity in the estuary are often overlooked. A series of DIP adsorption/desorption experiments under different salinities (0, 5, 15, 30) and suspended sediment concentrations (1-40 g L-1) were conducted in order t...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Shiyu Wang Rolf D Vogt Jacob Carstensen Yan Lin Jianfeng Feng Xueqiang Lu Source Type: research

A review on recent trends in the removal of emerging contaminants from aquatic environment using low-cost adsorbents
This article reviews replacing costly adsorbents with agriculture-based biomass that are abundant, inexpensive, and biodegradable and possess excellent adsorption capacity. The objectives of this article is to look at adsorption as a viable treatment option for emerging pollutants, as well as sophisticated and cost-effective emerging contaminants treatment options.PMID:34560497 | DOI:10.1016/j.chemosphere.2021.132270 (Source: Chemosphere)
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: M Varsha P Senthil Kumar B Senthil Rathi Source Type: research

Bioaerosolization and pathogen transmission in wastewater treatment plants: Microbial composition, emission rate, factors affecting and control measures
Chemosphere. 2021 Sep 8;287(Pt 3):132180. doi: 10.1016/j.chemosphere.2021.132180. Online ahead of print.ABSTRACTEnvironmental consequences during wastewater management are vital and getting increased attention to interrupt any possible disease transmission pathways. Evidence of bioaerosolization of pathogen from wastewater to atmosphere during wastewater treatment have been highlighted previously. Understanding aerosol-based transmission in wastewater treatment plant (WWTP) is important because of the hazard it presents to the workers involved or to the population around and appears to be very significant during pandemic o...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Sampriti Kataki Rupam Patowary Soumya Chatterjee Mohan G Vairale Sonika Sharma Sanjai K Dwivedi Dev Vrat Kamboj Source Type: research

Introducing of Li < sub > 2 < /sub > FeMn < sub > 3 < /sub > O < sub > 8 < /sub > /C-C < sub > 3 < /sub > N < sub > 4 < /sub > /IL nanocomposite for electrochemical determination of pantoprazole sodium in real samples
Chemosphere. 2021 Sep 20;287(Pt 3):132311. doi: 10.1016/j.chemosphere.2021.132311. Online ahead of print.ABSTRACTA new electrochemical sensor based on Li2FeMn3O8/C-C3N4 (LFMO/CCN)/1-ethyl-3-methylimidazolium chloride modified carbon paste electrode (CPE) has been constructed to measure pantoprazole sodium (PNZS). The electrochemical impedance spectroscopy (EIS) method was employed to evaluate the electrode charge-transfer resistances. Moreover, the differential pulse voltammetry method was used to detect PNZS in phosphate buffer solution (PBS) at pH 7.0. The detection limit of 80.0 × 10-9 M and 10.9 × 10-7 M wa...
Source: Chemosphere - September 24, 2021 Category: Chemistry Authors: Neda Ziaie Mehdi Shabani-Nooshabadi Source Type: research

Degradation of steroid estrogens by UV/peracetic acid: Influencing factors, free radical contribution and toxicity analysis
Chemosphere. 2021 Sep 15;287(Pt 3):132261. doi: 10.1016/j.chemosphere.2021.132261. Online ahead of print.ABSTRACTSteroid estrogens (SEs) are a group of refractory organic micropollutants detected in secondary effluent frequently. The advanced oxidation processes (AOPs) are usually used to deep remove the SEs from the secondary effluent. Herein, we first investigated the UV/peracetic acid (PAA), a PAA-based AOP, to degrade SEs. Using estrone (E1), 17β-estradiol (E2), estriol (E3), and 17α-ethinyl estradiol (EE2) as representatives, the results showed that UV can effectively activate PAA to enhance the degradation...
Source: Chemosphere - September 23, 2021 Category: Chemistry Authors: Jun Hu Tong Li Xuxiang Zhang Hongqiang Ren Hui Huang Source Type: research

Comparison of Zn-Al and Mg-Al layered double hydroxides for adsorption of perfluorooctanoic acid
Chemosphere. 2021 Sep 18;287(Pt 3):132297. doi: 10.1016/j.chemosphere.2021.132297. Online ahead of print.ABSTRACTPer-and polyfluoroalkyl substances (PFAS), a large class of synthesized chemicals, are persistent in nature and generally recalcitrant to conventional chemical and biological treatment. Adsorption is considered an economical and practical method for PFAS treatment. Layered double hydroxides (LDHs) represent a promising class of mineral-based adsorbents for PFAS removal because of the highly positive charge of their structural layers. In this research, the performance of two representative LDHs with varied cation...
Source: Chemosphere - September 23, 2021 Category: Chemistry Authors: Jingwan Huo Xiaopeng Min Qianqian Dong Shangping Xu Yin Wang Source Type: research

Reduction of Cu and nitrate leaching risk associated with EDDS-enhanced phytoextraction process by exogenous inoculation of plant growth promoting rhizobacteria
This study aims to explore if the inoculation of plant growth-promoting rhizobacteria (PGPRs) can eliminate the risk associated with the short-term application of EDDS by investigating Cu phytoextraction and soil nitrate content. Results showed that EDDS application significantly increased the copper (Cu) concentration in shoots, soil total Cu, NH4+-N and NO3--N content, but decreased plant biomass. The inoculation of PGPRs in the soil showed a strong ability to increase plant biomass, Cu phytoextraction and soil NH4+-N content, and decrease soil Cu and NO3--N content. Moreover, bacterial dominant taxa were found to be the...
Source: Chemosphere - September 23, 2021 Category: Chemistry Authors: Wenliang Ju Chengjiao Duan Lei Liu Xiaolian Jin Gabriela Bravo-Ruiseco Yuxia Mei Linchuan Fang Source Type: research