Article
Environmental Sciences
Yun Deng, Wang Xu, Qinghuai Zeng, Feiyun Sun, Fei Wang, Yanjie Li
Summary: The soil-air partition coefficients (KSA) of PBDEs and OPFRs were measured using a solid-phase fugacity meter, and the effects of temperature and relative humidity on KSA values were analyzed. An inverse relationship was found between temperature/RH and KSA values for both PBDEs and OPFRs. The study also found a significant correlation between log KSA and log KOA. The experimental KSA values differed greatly from the predicted values based on KOA. This study provides a better understanding of the behavior and fate of PBDEs and OPFRs in soil-air systems.
Review
Environmental Sciences
Ying Zhang, Yi Li, Sijia Li, He Huang, Yezi Chen, Xutao Wang
Summary: This study reviews the contamination of OH/MeO-PBDEs in the marine environment worldwide, summarizes their bioaccumulation and biomagnification in the marine food web, and proposes future research directions including production and synthesis pathways, toxicokinetics, and toxicology and human exposure risk assessment.
Article
Engineering, Environmental
Huizhong Sun, Yingming Li, Pu Wang, Ruiqiang Yang, Zhiguo Pei, Qinghua Zhang, Guibin Jiang
Summary: This study found that the concentrations of total PBDEs in soil and vegetation samples from the Arctic were higher than those from Antarctica, while the concentrations of MeO-PBDEs and OH-PBDEs were lower in the Arctic samples. Long-range atmospheric transport and human activities were identified as potential sources of PBDEs in polar regions, with ortho-substituted MeO-PBDE and OH-PBDE congeners dominating in terrestrial matrices, indicating the importance of natural sources. This study is the first report on MeO-PBDEs and OH-PBDEs in the terrestrial environment of polar regions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Li-Na Qiao, Wan-Li Ma, Li-Yan Liu, Zi-Feng Zhang, Wei-Wei Song, Hong-Liang Jia, Anatoly N. Nikolaev, Robie W. Macdonald, Yi-Fan Li
Summary: In this study, the P/G partitioning of polychlorinated biphenyls (PCBs) was comprehensively investigated by comparing the performance of seven models. The results showed that the Li-Ma-Yang model performed the best in predicting the P/G partition quotient (K-P) of PCBs, especially in the higher KOA range. Individual congener properties were also found to play a major role in the P/G partitioning of PCBs.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Environmental Sciences
Xuehui Xu, Guoqing Wang, Yuejin Li, Yufei Zhang
Summary: This study provides a comprehensive investigation on the accumulation and biotransformation of polybrominated diphenyl ethers (PBDEs) and their derivatives in earthworms, revealing methoxylation as a major metabolic pathway.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Ralf-Uwe Ebert, Ralph Kuehne, Gerrit Schueuermann
Summary: The Koa value is important for assessing the bioconcentration of airborne xenobiotics in foliage and in air-breathing organisms. A newly developed fragment model outperforms other prediction methods in terms of accuracy, and is implemented in the ChemProp software for public use. Additionally, a new approach is developed to convert from wet to dry octanol, enabling higher consistency in experimental and predicted Koa values.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Sapna Kumari Pandey, Kunal Roy
Summary: ETA indices can be used for developing QSPR models for logK(ow) and logK(oc), with molecular volume, branching pattern, environmental characteristics, and chemical structure playing crucial roles in determining the properties of compounds.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Environmental
Tengyi Zhu, Cuicui Tao
Summary: Thirteen QSPR models were developed in this study, with the GBDT model showing remarkable superiority in fitting, robustness and predictability. The main internal factors affecting the partition process were revealed to be molecular size, branches and types of bonds. Unlike existing models based on single category compounds, the models developed in this study considered multiple classes compounds, making their application domain more comprehensive.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sivani Baskaran, Ying Duan Lei, Frank Wania
Summary: This article discusses the importance of equilibrium partition coefficients or partition ratios and their applications in environmental chemistry. It compiles the relevant values for the octanol-air partition ratio and highlights discrepancies between measured data and predicted values.
JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA
(2021)
Article
Biochemical Research Methods
Hui-Jun Jin, Chun-Yun Zhang, Xin-Sheng Chai
Summary: In this paper, a novel method for determining the methanol partition coefficient (K-ow) using headspace gas chromatography (HS-GC) was reported. The method showed good precision and accuracy, and a correlation between K-ow and temperature was established.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Environmental Sciences
Wanran Li, Dezhi Chen, Shuhua Chen, Jing Zhang, Guobin Song, Yawei Shi, Ya Sun, Guanghui Ding, Willie J. G. M. Peijnenburg
Summary: In this study, generalized predictive models were developed to estimate KOA values of aromatic pollutants by considering the solvation free energy and the dimer effect. The results showed that uncorrected log KOA values underestimated experimental values and the deviation increased with increasing log KOA. The dimer effect on the apparent KOA values was found to be significant and driven by 7C -7C interactions.
Article
Environmental Sciences
Alla P. Toropova, Andrey A. Toropov
Summary: The octanol/water partition coefficient for nanoparticles is crucial for estimating their ecological fate; the self-consistent system is a new approach for validating predictive potential; models based on special symbol sequences are more accurate than Monte Carlo optimization models.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Environmental
Xuejing Kang, Bo Hu, Mayang Christy Perdana, Yongsheng Zhao, Zhongbing Chen
Summary: This study utilized the extreme learning machine method and COSMO descriptors to construct estimation models for predicting the Kow of organics, with the ELM-4 model showing the best correlation coefficient and root-mean-square error.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Shan Niu, Tom Harner, Ruiwen Chen, J. Mark Parnis, Amandeep Saini, Kimberly Hageman
Summary: This study utilized polyurethane foam-based passive air samplers to monitor SCCP concentrations in the air in the Greater Toronto Area (GTA) and found variations in SCCP levels across different source sectors in the GTA. The results suggest that time-weighted linear phase sampling is feasible for congeners with certain K-OA values.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Karl Marti Toots, Sulev Sild, Jaan Leis, William E. Acree, Uko Maran
Summary: Ionic liquids (ILs) have unique properties as solvents and electrolytes, and machine learning methods were developed to predict the gas-ionic liquid partition coefficients of organic compounds. The common anion in different ILs showed significant correlation between data series log K values, while common cation correlations were less but still significant.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Jiajian Xing, Haiguang Zhang, Gaoliang Wei, Lei Du, Shuo Chen, Hongtao Yu, Xie Quan
Summary: By incorporating molybdenum sulfide (MoS2) nanosheets and applying external electrical assistance, both the 2D channel and charge density of reduced graphene oxide (rGO) membranes were regulated to enhance water flux and salt rejection. The resulting rGO/MoS2 membranes exhibited expanded nanochannels, resulting in significantly increased water permeance. In addition, the high capacitance and negative potential of the membranes contributed to improved rejection rates for NaCl and Na2SO4 ions. This study provides new insights for the design of membranes with high water flux and salt rejection efficiency.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Peike Cao, Xie Quan, Xiaowa Nie, Kun Zhao, Yanming Liu, Shuo Chen, Hongtao Yu, Jingguang G. G. Chen
Summary: The authors report a scalable cobalt single-site catalyst for hydrogen peroxide synthesis at industrial-relevant currents in acidic, neutral or alkaline electrolyte, providing a sustainable alternative to traditional anthraquinone technology.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Xinfei Fan, Gaoliang Wei, Xie Quan
Summary: Membrane separation is widely used in water and wastewater treatment due to its cost-effectiveness, ease of operation, and high efficiency. However, current membranes face challenges in balancing selectivity and permeability, as well as dealing with membrane fouling. Recent studies have focused on developing high-performance membranes based on carbon nanomaterials, such as carbon nanotubes and graphene, to improve water and wastewater treatment. These carbon nanomaterial-based membranes demonstrate enhanced permselectivity and fouling resistance under electrochemical assistance, thanks to their good electrical conductivity. This review summarizes the progress in the preparation, mechanisms, and applications of electroconductive nanocarbonaceous membranes for water purification and wastewater treatment, aiming to enhance the fundamental understanding of combining membrane separation and electrochemistry. The review covers methods for preparing electroconductive membranes, such as carbon nanotube membranes and graphene membranes, as well as the underlying mechanisms for the improved permselectivity, antifouling, and regeneration performance achieved through electrochemical processes. The review also discusses practical limitations of membrane/electrochemistry systems and proposes possible solutions.
ENVIRONMENTAL SCIENCE-NANO
(2023)
Article
Chemistry, Physical
Lanlan Liang, Peike Cao, Xin Qin, Shuai Wu, Haokun Bai, Shuo Chen, Hongtao Yu, Yan Su, Xie Quan
Summary: Developing efficient and interference-tolerant catalysts for practical use in catalytic ozonation process is challenging. In this study, a surface Vo-rich catalyst was prepared by doping Co into zinc ferrite spinel, showing efficient mineralization of recalcitrant organic pollutants. The removal of contaminants was mainly attributed to nonradical-based oxygen species, *O, rather than traditional hydroxyl radicals, •OH. The Vo-driven nonradical catalysis exhibited high resistance to coexisting ions and excellent performance in actual wastewater treatment, providing a novel strategy for efficient mineralization of pollutants in complicated water matrices.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Xueyang Zhao, Qin Geng, Fan Dong, Kun Zhao, Shuo Chen, Hongtao Yu, Xie Quan
Summary: Electrochemically reducing nitrate to ammonia is an efficient method to address nitrate pollution. However, controlling the selectivity and kinetics of ammonia production remains a challenge. In this study, a single-atom Cu catalyst was developed for selective and efficient nitrate reduction, achieving high Faradic efficiency and ammonia selectivity. DFT calculations revealed the underlying mechanism, demonstrating the superiority of the single-atom Cu catalyst over Cu nanoparticle catalyst. This research provides a strategy for designing electrocatalysts for efficient and selective ammonia production via nitrate reduction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xin Qin, Peike Cao, Xie Quan, Kun Zhao, Shuo Chen, Hongtao Yu, Yan Su
Summary: In this study, a dual-atomic-site catalyst (CoFe DAC) was proposed to cooperatively catalyze middotOH electrogeneration. The CoFe DAC showed higher middotOH production rate compared to single-site catalysts, and it was more energy-efficient for coking wastewater treatment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Gaoliang Wei, Lei Du, Haiguang Zhang, Jiajian Xing, Shuo Chen, Xie Quan
Summary: In this study, it was found that electrochemical treatment can expand the restacked regions of reduced graphene oxide (rGO) membranes, leading to the formation of ultrafast water transport nanochannels. The expansion is driven by hydrogen bond interactions between water molecules and electrochemically produced hydroxyl groups on the edges of rGO nanosheets. The treated rGO membranes exhibit a permeance 2 orders of magnitude higher than pristine rGO membranes and about 3 times higher than graphene oxide membranes. Additionally, the rGO membranes also show higher ionic/molecular rejection performance due to their smaller average pore size.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Hai-Guang Zhang, Xie Quan, Lei Du, Gao-Liang Wei, Shuo Chen, Hong-Tao Yu, Ying-Chao Dong
Summary: Researchers propose an electropolarization strategy using vertically aligned reduced graphene oxide (VARGO) membrane to regulate interfacial hydrogen-bond and electrostatic interactions, achieving high water permeation and ion rejection performance.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Environmental Sciences
Yifan Ke, Jingqiu Jiang, Xiqin Mao, Baocheng Qu, Xintong Li, Hongxia Zhao, Jingyao Wang, Zhansheng Li
Summary: This study investigated the photodegradation of targeted glucocorticoids (GCs), budesonide (BD) and clobetasol propionate (CP), and their effects on the environment. The degradation rate constants (k) increased with the initial concentrations of BD and CP. The addition of Cl-, NO2-, and Fe3+ decreased the photodegradation rate, while FA increased it. This research provides insight into the fate of synthetic GCs in the environment and contributes to understanding their ecological risks.
Article
Engineering, Environmental
Jinghua Liu, Feng Tan, Yifei Xing, Qian Zhang, Zhanyi Zhao, Xiaochun Wang, Yan Wang, Hongxia Zhao
Summary: This study proposes a label-free chemiresistive sensor for the detection of microcystin (MC)-LR in water samples. The sensor shows high sensitivity and selectivity, with a wide linear range and stable detection. It can be used for monitoring MC-LR released by microcystis aeruginosa and measuring MC-LR in freshwater lakes with moderate algal blooms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qilin Yu, Haohao Mao, Zhiqiang Zhao, Xie Quan, Yaobin Zhang
Summary: As a major driver of global methane production, methanogens are exposed to an environment filled with dynamic electromagnetic waves, which may induce electromotive force (EMF) to potentially influence methanogen metabolism. This study found that exposure to a dynamic magnetic field increased biogas production through induced EMF. The methane emissions from sediments increased by 41.71% when exposed to a dynamic magnetic field with an intensity of 0.20 to 0.40 mT. The EMF accelerated the respiration of methanogens and bacteria, leading to enhanced microbial metabolism.
Article
Chemistry, Multidisciplinary
Muhammad Irfan Ahmad, Shuo Chen, Hongtao Yu, Xie Quan
Summary: This study demonstrates the successful production of H2O2 by introducing reduced graphene oxide (rGO) into SnO2, which enhanced light absorption and reduced the energy band gap. Among different concentrations of rGO, 0.5wt% rGO-SnO2 showed the highest H2O2 yield. The findings provide valuable guidance for designing efficient photocatalysts for H2O2 generation.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Chengyu Yuan, Yuxin Li, Lulu Qian, Jiajian Xing, Xu Wang, Haiguang Zhang, Lei Du, Gaoliang Wei, Shuo Chen, Xie Quan
Summary: This study presents a molten salt intercalation method for the fabrication of an Al3+-intercalated MXene membrane with good antiswelling ability. The intercalated membrane shows significant increase in the Al-O group and Al content, while in situ XRD tests confirm the stability of d-spacing with Al3+ intercalation. The membranes demonstrate excellent separation efficacy for organic dyes and antibiotics with rejection rates exceeding 90%.
ACS ES&T ENGINEERING
(2023)
Article
Environmental Sciences
Jia Zhao, Hongxia Zhao, Zhihui Zhong, Tadiyose Girma Bekele, Huihui Wan, Yuming Sun, Xintong Li, Xiaonuo Zhang, Zhansheng Li
Summary: Tetrabromobisphenol A bis (allyl ether) (TBBPA-BAE) is a widely used brominated flame retardant with neurotoxic and endocrine disruption effects on aquatic organisms. This study investigated the bioconcentration, elimination kinetics, and biotransformation of TBBPA-BAE in common carp. The results showed rapid accumulation of TBBPA-BAE in the fish, with the highest concentrations found in the liver and the longest residence time in the kidney. Biotransformation of TBBPA-BAE was observed, with 14 different metabolites identified in the liver. These findings highlight the importance of considering the biotransformation products of TBBPA-BAE in risk assessment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Yanping Shi, Tao Liu, Xie Quan, Shuo Chen, Hongtao Yu, Wuzhe Quan
Summary: A municipal WWTP upgraded its process to A2O-IFFAS by filling ZVI-modified biofilm carriers into anoxic bioreactors and clinoptilolite-modified biofilm carriers into aerobic bioreactors. The upgraded process achieved high nitrogen removal efficiency and met the discharge standard requirements.
CHEMICAL ENGINEERING JOURNAL
(2023)
