Influence of Microbial Inoculation Site on Trichloroethylene Degradation in Electrokinetic-Enhanced Bioremediation of Low-Permeability Soils
In conclusion, this study contributes to the development of effective strategies for enhancing TCE biodechlorination in the EK-BIO system, which is particularly beneficial for the remediation of low-permeability soils.PMID:38604486 | DOI:10.1016/j.envres.2024.118899 (Source: Environmental Research)
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Si-Ying Yang Chun-Yu Lai He-Ping Zhao Source Type: research
Insights into tolerance mechanisms of earthworms (Eisenia fetida) in copper-contaminated soils by integrating multi-omics analyses
Environ Res. 2024 Apr 9:118910. doi: 10.1016/j.envres.2024.118910. Online ahead of print.ABSTRACTEarthworms can resist high levels of soil copper (Cu) contamination and play an essential role in absorbing them effectively. However, the molecular mechanisms underlying Cu tolerance in earthworms are poorly understood. To address this research gap, we studied alterations of Eisenia fetida in antioxidant enzymes, gut microbiota, metabolites, and genes under varying levels of Cu exposure soils (0, 67.58, 168.96, 337.92 mg/kg). Our results revealed a reduction in antioxidant enzyme activities across all treatment groups, indicat...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Yanliang Zhang Chenyu Huang Jinqi Zhao Luyi Hu Lan Yang Yuanyuan Zhang Weiguo Sang Source Type: research
Deep insights into the roles and microbial ecological mechanisms behind waste activated sludge digestion triggered by persulfate oxidation activated through multiple modes
This study comprehensively investigated the effects of persulfate oxidation activated through multiple modes, i.e., ferrous, zero-valent iron (ZVI), ultraviolet (UV) and heat, on the performance of sludge digestion. Results showed that PS_ZVI significantly accelerated the methane production rate to 12.02 mL/g VSS. By contrast, PS_Heat promoted the sludge acidification and gained the maximum short-chain fatty acids (SCFAs) yield (277.11 ± 7.81 mg COD/g VSS), which was 3.41-fold compared to that in PS_ZVI. Moreover, ferrous and ZVI activated PS achieved the oriented conversion of acetate, the proportions of which took 73% a...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Lijiao Yin Aijuan Zhou Yaoli Wei Cristiano Varrone Dengfei Li Jingyang Luo Zhangwei He Wenzong Liu Xiuping Yue Source Type: research
Iridium oxide-based non-enzymatic glucose sensor: Superior electro-catalytic performance in biological environmental media
In this study, we introduce an Iridium oxide (IrO2)-based non-enzymatic glucose sensor. This sensor demonstrates exceptional electro-catalytic properties in human serum, characterized by high sensitivity (638 μA μM-1cm2) and a consistent recovery rate (∼104%) across 15 cycles in saline. Furthermore, its impressive performance in human serum, as evidenced by a low relative standard deviation (RSD <1.57%), underscores its applicability in biological matrices such as interstitial fluids. Overall, the IrO2 sensor is a promising, highly reversible, economical, and simple method for detecting glucose in continuous monitor...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Ji Hwan Jeon Hyo-Ryoung Lim Ji Young Park Yong-Ho Choa Source Type: research
Mechanistic understanding of acclimation and energy metabolism of acetoclastic methanogens under different substrate to microorganism ratios
In this study, two different operational modes, continuous flow reactor (CFR) and sequencing batch reactor (SBR), accompanied with solids retention times (SRT) of 10 days (SBR10d and CFR10d) and 25 days (SBR25d and CFR25d) were implemented to elucidate their impacts on microbial communities and energy metabolism of methanogens in acetate-fed systems. Microbial community analysis revealed that the relative abundance of Methanosarcina (16.0% ∼ 46.0%) surpassed Methanothrix (3.7% ∼ 22.9%) in each reactor. SBRs had the potential to enrich both Methanothrix and Methanosarcina. Compared to SBRs, CFRs had lower total relative...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Huanhuan Chang Bang Du Kai He Qidong Yin Guangxue Wu Source Type: research
Variation and correlation between water retention capacity and gas permeability of compacted loess overburden during wetting-drying cycles
This study conducted centrifuge tests and gas permeability tests on compacted loess. The experiments examined the impact and relationship of wetting-drying cycles and dry density on the soil water characteristic curve (SWCC) and gas permeability of compacted loess. Research findings reveal that during the dehumidification process of compacted loess, the gas permeability increases non-linearly, varying the gas permeability of soil with different densities to different extents under wetting-drying cycles. Two models were introduced to describe the impact of wetting-drying cycles on gas permeability of loess with various dry ...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Dehui Kong Tao Wu Haoqing Xu Pengming Jiang Aizhao Zhou Yiyan Lv Source Type: research
Stratified control of chemical crystallization in a pellet fluidized bed for pH-Adjusted fluoride and phosphate reduction: An experimental study
This study investigates the impact of stratified pH control in a crystallization granulation fluidized bed for the removal of fluoride and phosphate on a pilot scale. The results indicate that using dolomite as a seed crystal, employing sodium dihydrogen phosphate (SDP) and calcium chloride as crystallizing agents, and controlling the molar ratio n(F):n(P):n(Ca) = 1:5:10 with an upflow velocity of 7.52 m/h, effectively removes fluoride and phosphate. Stratified pH control-maintaining weakly acidic conditions (pH = 6-7) at the bottom and weakly alkaline conditions (pH = 7-8) at the top-facilitates the induction of fluoroapa...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Ruizhu Hu Shichang Li Kaihong Li Tinglin Huang Zenan Liu Gang Wen Source Type: research
Remediation of acetamiprid pesticide from contaminated water by antibacterial biosorbent based on carboxymethyl tragacanth-grafted-poly(3-aminophenol) decorated with ZnO@Fe < sub > 3 < /sub > O < sub > 4 < /sub >
In this study, a bionanocomposite of carboxymethyl tragacanth-grafted-poly(3-aminophenol)/zinc oxide@iron oxide (CMT-g-P3AP/ZnO@Fe3O4) synthesized by in situ copolymerization as an efficient adsorbent to eliminate the acetamiprid pesticide from polluted water. The CMT-g-P3AP/ZnO@Fe3O4 magnetic nanocomposite was analyzed utilizing various techniques including FTIR, EDX, FESEM, XRD, BET, CHNSO, and TGA. The results displayed that the resulting nanocomposite with maximum adsorption capacity (Qmax) successfully removed the acetamiprid pesticide from polluted water under optimal conditions such as pH of 7.00, 5.00 mg of adsorbe...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Seyedeh Soghra Mosavi Ehsan Nazarzadeh Zare Hossein Behniafar Shefa Mirani Nezhad Rasoul Esmaeely Neisiany Source Type: research
Influence of Microbial Inoculation Site on Trichloroethylene Degradation in Electrokinetic-Enhanced Bioremediation of Low-Permeability Soils
In conclusion, this study contributes to the development of effective strategies for enhancing TCE biodechlorination in the EK-BIO system, which is particularly beneficial for the remediation of low-permeability soils.PMID:38604486 | DOI:10.1016/j.envres.2024.118899 (Source: Environmental Research)
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Si-Ying Yang Chun-Yu Lai He-Ping Zhao Source Type: research
Insights into tolerance mechanisms of earthworms (Eisenia fetida) in copper-contaminated soils by integrating multi-omics analyses
Environ Res. 2024 Apr 9:118910. doi: 10.1016/j.envres.2024.118910. Online ahead of print.ABSTRACTEarthworms can resist high levels of soil copper (Cu) contamination and play an essential role in absorbing them effectively. However, the molecular mechanisms underlying Cu tolerance in earthworms are poorly understood. To address this research gap, we studied alterations of Eisenia fetida in antioxidant enzymes, gut microbiota, metabolites, and genes under varying levels of Cu exposure soils (0, 67.58, 168.96, 337.92 mg/kg). Our results revealed a reduction in antioxidant enzyme activities across all treatment groups, indicat...
Source: Environmental Research - April 11, 2024 Category: Environmental Health Authors: Yanliang Zhang Chenyu Huang Jinqi Zhao Luyi Hu Lan Yang Yuanyuan Zhang Weiguo Sang Source Type: research
Degradation of thiocyanate by Fe/Cu/C microelectrolysis: Role of pre-magnetization and enhancement mechanism
This study introduced the use of permanent magnets for the first time to enhance Fe/Cu/C ternary micro-electrolytic fillers, offering a cost-effective, versatile, and stable approach that effectively effectively enhanced the degradation of SCN-.PMID:38599446 | DOI:10.1016/j.envres.2024.118833 (Source: Environmental Research)
Source: Environmental Research - April 10, 2024 Category: Environmental Health Authors: Min Zhang Jin Wang Xinyuan Zhan Wusong Xu Maolin He Ding Ma Yue Zhengbo Source Type: research
Tackling antibiotic contaminations in wastewater with novel Modified-MOF nanostructures: A study of molecular simulations and DFT calculations
In conclusion, our study highlighted the importance of modeling in developing practical solutions for removing antibiotics as PHCs from wastewater. The insights gained from our calculations can facilitate the design of more effective adsorption materials, ultimately leading to a more hygienic and sustainable ecosystem.PMID:38599447 | DOI:10.1016/j.envres.2024.118856 (Source: Environmental Research)
Source: Environmental Research - April 10, 2024 Category: Environmental Health Authors: Iman Salahshoori Majid Namayandeh Jorabchi Afsaneh Mazaheri Seyedeh Masoomeh Sadat Mirnezami Mahdis Afshar Mahdi Golriz Marcos A L Nobre Source Type: research
Bioremediation and Bioscavenging for elimination of Organophosphorus threats: An approach using enzymatic advancements
Environ Res. 2024 Apr 8:118888. doi: 10.1016/j.envres.2024.118888. Online ahead of print.ABSTRACTOrganophosphorus compounds (OP) are highly toxic pesticides and nerve agents widely used in agriculture and chemical warfare. The extensive use of these chemicals has severe environmental implications, such as contamination of soil, water bodies, and food chains, thus endangering ecosystems and biodiversity. Plants absorb pesticide residues, which then enter the food chain and accumulate in the body fat of both humans and animals. Numerous human cases of OP poisoning have been linked to both acute and long-term exposure to thes...
Source: Environmental Research - April 10, 2024 Category: Environmental Health Authors: Surbhi Jaiswal Brijeshwar Singh Isha Dhingra Abhijeet Joshi Prashant Kodgire Source Type: research
Electrochemical Microplastic Detection using Chitosan-Magnesium Oxide Nanosheet
Environ Res. 2024 Apr 8:118894. doi: 10.1016/j.envres.2024.118894. Online ahead of print.ABSTRACTMicroplastics, an invisible threat, are emerging as serious pollutants that continuously affect health by interrupting/contaminating the human cycle, mainly involving food, water, and air. Such serious scenarios raised the demand for developing efficient sensing systems to detect them at an early stage efficiently and selectively. In this direction, the proposed research reports an electrochemical hexamethylenetetramine (HMT) sensing utilizing a sensing platform fabricated using chitosan-magnesium oxide nanosheets (CHIT-MgO NS)...
Source: Environmental Research - April 10, 2024 Category: Environmental Health Authors: Ashab Noumani Damini Verma Ajeet Kaushik Ajit Khosla Pratima R Solanki Source Type: research
Identification of hot spots and co-occurrence patterns of activities on thyroid hormone receptor and transthyretin binding in passive samplers from Czech surface waters
Environ Res. 2024 Apr 8:118891. doi: 10.1016/j.envres.2024.118891. Online ahead of print.ABSTRACTOne of the less studied in vitro biological activities in the aquatic environment are thyroid hormone receptor beta (TRβ)-mediated agonistic and antagonistic activities and transthyretin (TTR) binding activity. They were measured mostly using active sampling methods, but rarely found. It is unclear if these activities co-occur, and the drivers of the (anti-)TRβ activity are mostly unknown. Therefore, the main aim of the study was to determine (anti-)TRβ activities as well as transthyretin (TTR) binding activity in passive sa...
Source: Environmental Research - April 10, 2024 Category: Environmental Health Authors: Pavel Šauer Adam Bo řík Andrea Vojs Sta ňová Roman Grabic V ít Kodeš Beatrice Kyei Amankwah Hana Kocour Kroupov á Source Type: research
