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Comparison of PAH mass emissions and their toxicity-weighted trends in China, 2000–2022

Science of the Total Environment 2025年 981卷 179562页

作者： Wang, Weiwei Hu, Laigang Chen, Lu Miao, Xiaozeng Wu, Wenhao Shi, Zhou Lin, Daohui Yang, Kun State Key Laboratory of Soil Pollution Control and Safety Key Laboratory of Environmental Pollution and Ecological Health of Ministry of Education College of Environmental and Resource Sciences Zhejiang University Hangzhou310058 China Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center Hangzhou311200 China

Polycyclic aromatic hydrocarbons (PAHs) emissions are often used as direct evidence for subsequent environmental monitoring, governance, and policy-making. However, the toxicity among individual PAH varies significantly, causing their toxicity-based risk to be overlooked. The analysis revealed that total PAH emissions (EΣPAHs) has peaked in 2007 (i.e., 1.1 × 105 t), then declined to 2022 (i.e., 7.4 × 104 t) in China. However, the toxicity-weighted PAH emissions (EΣTEQ) has not decreased, because the emissions of high molecular weight PAH (EΣHPAHs) with high toxicity has not decreased, although the emissions of low molecular weight PAH (EΣLPAHs) with low toxicity has decreased significantly. It was verified that the trend of variation in PAH emissions is comprehensively determined by the decrease in biomass and increase in fossil fuel consumption. The decline in EΣLPAHs from biomass burning exceeded emission increases attributable to fossil fuel combustion, driving an overall reduction in total LPAHs post-2007 of China. In contrast, EΣHPAHs exhibited temporal variability after 2007, as emission reductions from biomass burning were offset by comparable increases from fossil fuel. Despite efforts to reduce emissions of conventional atmospheric pollutants, EΣTEQ have not decreased due to the rising fossil fuel consumption and limited pollution control efficiency on EΣHPAHs. The findings addressed the gap between PAH mass emissions and their toxicity-weighted trends, which enabled us to pay attention to the variation of EΣTEQ for accurate risk management to any region with shifting PAH source profiles. Moreover, emphasis should be placed on transitioning fossil fuel consumption to clean energy and implementing effective measures to reduce EΣHPAHs in flue gas, such as adsorption and degradation. © 2025 Elsevier B.V.

关键词： Emission control

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Efficient activation of Fe-Bi2Sn2O7 for pollutant removal by peroxodisulfate: Synergistic Fenton-like and photoreactions

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Separation and Purification Technology 2025年 373卷

作者： Liu, Jiawei Zhen, Li Xu, Yongsui Liu, Jia Liu, Zhichao Zhang, Zhilin Shi, Jun Deng, Huiping State Key Laboratory of Pollution Control and Resources Reuse Shanghai Institute of Pollution Control and Ecological Security Key Laboratory of Yangtze River Water Environment Ministry of Education College of Environmental Science and Engineering Tongji University Shanghai200092 China

Fenton-like systems based on peroxodisulfate (PDS) activation have demonstrated potential for degrading organic pollutants. Photocatalysts containing transition metal active sites exhibit efficient PDS activation, but their performance is frequently constrained by inefficient regeneration of oxidized metal species, which impedes redox cycling and catalytic efficiency. A synergistic integration of photocatalysis and PDS activation has been demonstrated to enhance reaction kinetics via synergistic interactions. An iron-doped Bi2Sn2O7 (FBSO) catalyst was developed through a tailored doping strategy to investigate the interplay between photoexcitation and persulfate activation chemistry. Comprehensive characterization and computational modeling demonstrate that system synergy is governed by the dynamic balance between photogenerated holes and PDS* radicals at the catalyst surface. The optimal valence band alignment is achieved at 10 % iron doping, which maximizes the photo-Fenton effect and catalytic activity of FBSO. Mechanistic investigations indicate that photogenerated charge carriers accelerate the Fe3+/Fe2+ redox cycle and facilitate PDS activation, generating sulfate radicals and reactive oxygen species. Free radical trapping assays and electron paramagnetic resonance (EPR) analyses confirm the dominance of these oxidation pathways. The engineered electronic structure of FBSO enables efficient charge transfer and pollutant adsorption, as evidenced by band alignment and work function analyses. This study provides a strategic framework for designing multifunctional catalysts in sustainable water treatment through the integration of photocatalysis and Fenton-like processes. © 2025 Elsevier B.V.

关键词： Electron spin resonance spectroscopy

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Mechanistic insights to sorptive removal of four sulfonamide antibiotics from water using magnetite-functionalized biochar

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Biochar 2023年第1期5卷 1377-1388页

作者： Shanshan Bai Yaolu Zhou Mingrong Qian Jun Xia Zhiqiang Sun Yujiao Wang Xiaochen Huang Shishu Zhu Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province Interdisciplinary Research AcademyZhejiang Shuren UniversityHangzhou 310015People’s Republic of China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090People’s Republic of China State Key Lab of Biocontrol Guangdong Provincial Key Laboratory of Plant ResourcesSchool of AgricultureShenzhen Campus of Sun Yat-Sen UniversityShenzhen 518107People’s Republic of China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006People’s Republic of China

Magnetite-functionalized biochar(MBC)is a promising engineered material for remediation of antibiotic-contaminated ***,sorption mechanisms of ionizable organic compounds such as sulfonamide antibiotics(SAs)on MBC are still *** study employed four representative SAs including sulfamethazine(SMT),sulfamerazine(SMR),sulfadiazine(SDZ),and sulfamethoxazole(SMX),to compare the difference in sorption on *** showed that the sorption capacities and affinities of the four SAs varied with their substituents,hydrophobic properties,and dissociation constants(pKa).Synergistic effect during co-pyrolysis with Fe^(3+)enhanced the sorption performance of MBC towards SAs compared to original *** methods confirmed structural changes of MBC such as the variance in oxygen-containing groups and defective/graphitized *** of modeling pH-dependent sorption revealed that H-bonding orπ-bond assisted H-bonding determined the sorption affinities and capacities of *** particular,the SAs with lower pKa were thermodynamically favorable to form H-bonding with MBC via proton exchange with water *** calculation results quantified the contributions of H-bonding strengths and found that the energies of H-bonding were correlated with affinities of ***,contributions of oxygencontaining groups instead of minerals dominated the H-bonding *** insights from this study can be valuable in exploring engineered BC composites for practical application in field remediation.

关键词： Biochar Antibiotics Sorption capacity Synergistic effect Quantum calculation

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Spatio-temporal characteristics of genotoxicity in the Yangtze River under the background of COVID-19 pandemic

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Frontiers of Environmental Science & Engineering 2024年第11期18卷 121-132页

作者： Xinge Wang Na Li Yingnan Han Xiao Li Weixiao Qi Jian Li Kaifeng Rao Zijian Wang Yanjie Wei Mei Ma Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Yangtze Eco-Environment Engineering Research Center China Three Gorges CorporationBeijing 100038China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery Beijing 100085China University of Chinese Academy of Sciences Beijing 100049China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Engineering Research Center of Groundwater Pollution Control and Remediation Ministry of EducationCollege of Water SciencesBeijing Normal UniversityBeijing 100875China Key Laboratory of Environmental Protection in Water Transport Engineering Ministry of Communications Tianjin Research Institute of Water Transport EngineeringTianjin 300456China

The global spread of viruses can lead to the release of large amounts of disinfectants or antiviral drugs into the water *** resulting disinfection byproducts(DBPs)and residual antiviral drugs,acting as genotoxic substances or their precursors,may pose risks to aquatic animals and drinking water sources;however,to date,no studies have analyzed the changes in genotoxicity in the Yangtze River before and after the *** the present study,water and sediment samples from the Yangtze River were collected during different seasons,just before and after the outbreak of COVID-19,and were assessed using the SOS/umu test(with and without liver S9).The results indicated that water samples exhibited more pronounced genotoxicity than did sediments,with direct genotoxicity being the primary ***,there were significant regional differences,with notably greater genotoxicity observed in the upper Yangtze River than in the lower reaches before the COVID-19 ***,this trend was reversed six to ten months later,suggesting the accumulation of DBPs or antiviral drugs after the COVID-19 ***,the risk quotient indicated that 65%of the water samples posed a high risk for Paramecium caudatum,whereas 71%of the samples posed a medium risk for Danio rerio,thereby representing a potential threat to the ecological security of the Yangtze *** conclusion,this study,at the basin scale,revealed the impacts of COVID-19 on the Yangtze River,highlighting the need to prevent DBPs and pharmaceutical pollution during similar events in the future.

关键词： Yangtze River COVID-19 Genotoxicity Spatio-temporal characteristics

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Fertilizer drawn forward osmosis as an alternative to 2nd pass seawater reverse osmosis: Estimation of boron removal and energy consumption

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Frontiers of Environmental Science & Engineering 2021年第6期15卷 433-445页

作者： Hailan Wang Baoyu Gao Li’an Hou Ho Kyong Shon Qinyan Yue Zhining Wang Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityJinan 250100China School of Civil and Environmental Engineering University of TechnologySydney(UTS)Broadway NSW 2007Australia

Agriculture is the largest consumer of *** seawater is an important alternative water source for sustainable ***,some issues of the current desalination technology hinder its use for agriculture irrigation,including low boron removal and high energy *** study systematically explored the feasibility of employing fertilizer drawn forward osmosis(FDFO)as an alternative to 2nd pass reverse osmosis(RO)by considering the boron removal performance and specific energy consumption(SEC).Different operating conditions were investigated,such as the boron and NaCl concentrations in feed solution(FS),draw solution(DS)concentration,pH,the volume ratio of FS to DS,membrane orientation,flow rate,and operating *** results indicated that a low boron concentration in FS and high DS pH(pH=11.0)decreased the boron solute flux,and led to low final boron concentration in the *** other operating conditions had negligible influence on the final DS boron ***,a lower flow rate and higher specific water flux with certain permeate water volumes were conducive to reducing the SEC of the FDFO ***,our study paves a new way of using FDFO in irrigation,which avoids the phytotoxicity and human health risk of *** results show the potential of FDFO as an alternative to 2nd pass RO for irrigation water production.

关键词： Fertilizer drawn forward osmosis(FDFO) Boron removal Specific energy consumption(SEC) Seawater reverse osmosis(SWRO) Irrigation water production

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Efficient Adsorption of Hydroxychloroquine by Carboxylated Lignin-Based Sponge: Quantification of the Adsorption Contribution of Interactions

SSRN

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SSRN 2024年

作者： Gao, Boqiang Ma, Shuanglong Liang, Haoge Wang, Jie Huang, Yan Wang, Jingzhen Song, Jia Hu, Pan Yang, Hu College of Resources and Environment Henan Agricultural University Zhengzhou450002 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Hydroxychloroquine (HCQ) as an antiviral pharmaceutical has been widely detected in the aquatic environment. Adsorption is an effective method for removal of HCQ, but the quantitative study of the adsorption interactions is unclear. In this study, a carboxylated lignin-based sponge (PLC) was fabricated, and the adsorption contributions of electrostatic attraction (EA), hydrogen bond (HB), and π-π electron donor-acceptor (π-π EDA) interactions were quantitatively investigated. The results showed that PLC exhibited excellent adsorption performance under wide pH range (4.0 0.822) and three molecular probes (R2 > 0.749) was established, respectively. The optimal adsorption capacity was achieved by the synergistic combination of the deprotonated carboxyl of PLC with the HB of Ka1 amino, EA of Ka2 amino, and the π-π EDA of the quinoline ring. This study provided a new strategy for the quantitative construction of structure-activity relationships of adsorbents. © 2024, The Authors. All rights reserved.

关键词： Lignin

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Prediction of free radical reactions toward organic pollutants with easily accessible molecular descriptors

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Chemosphere 2024年 346卷 140660页

作者： Zhang, Guoyang Zhu, Qiang Zheng, Hongcen Zhang, Shujuan Ma, Jing State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China Key Laboratory of Mesoscopic Chemistry of Ministry of Education Institute of Theoretical and Computational Chemistry School of Chemistry and Chemical Engineering Nanjing University Nanjing210023 China

Machine learning (ML) is becoming an efficient tool for predicting the fate of aquatic contaminants owing to the preponderance of big data. However, whether ML can "learn" the differences in reactivity among different free radicals has not yet been tested. In this work, the effectiveness of combining ML algorithms with molecular fingerprints to predict the reactivity of three free radicals was evaluated. First, a dataset containing 211 organic pollutants and their respective rate constants with the carbonate radical (CO3•−) was used to develop predictive models using both linear regression and ML methods. The use of topological atomic alignment information, in the form of the molecular access system (MACCS) and Morgan Fingerprint, and the electronic structure features (energy levels of the lowest unoccupied and highest occupied molecular orbitals, ELUMO and EHOMO, and the energy gap between ELUMO and EHOMO) gave satisfactory predictive performances (ML model with Random Forest algorithm with MACCS: RMSEtest = 0.787;linear regression model with energy levels: RMSEtest = 0.641). Additionally, the model interpretation correctly described that the key reactivity features for CO3•− were relatively close to those for SO4•− rather than those for •OH. These results suggest that combination of ML algorithms with easily accessible molecular fingerprints would be a powerful tool to accurately predict the radical reactions towards organic compounds. © 2023

关键词： Forecasting

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Root exudate-driven rhizospheric recruitment of plant growth-promoting rhizobacteria

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Pedosphere 2025年第1期35卷 216-228页

作者： Hua LIN Caixing LAI Guo YU Geoffrey ISUNAHARA Liheng LIU Habib ULLAH Jie LIU College of Environmental Science and Engineering Guilin University of TechnologyGuilin 541004China Center for Water and Ecology State Key Joint Laboratory of Environment Simulation and Pollution ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Department of Natural Resource Sciences McGill UniversityMontreal H3A 0G4Canada Department of Environmental Science Zhejiang UniversityHangzhou 310058China

To promote growth,terrestrial plants release photosynthetic products into the rhizosphere in the form of root exudates through their root *** the attraction of root exudates,plant growth-promoting rhizobacteria(PGPR)colonize the rhizosphere to stimulate plant growth and/or suppress the growth of pathogenic *** rhizospheric recruitment of PGPR,as well as the establishment of root-microbe interactions,is initiated by chemotaxis towards root *** the past several decades,scientists have made notable strides in identifying representative chemoeffectors in root exudates,as well as the corresponding *** review here the most recent developments in rhizospheric chemotaxis,particularly the chemoeffectors in root exudates,the structural and functional characterization of methyl-accepting chemotaxis proteins of PGPR,and the impacts of rhizospheric chemotaxis on root colonization,biofilm formation,and other root-microbe interactions during ***,we propose several perspectives that aim to fully unlock the potential of PGPR as bioinoculants in sustainable agriculture.

关键词： biofilm formation chemoattractant chemoeffector methyl-accepting chemotaxis proteins rhizospheric colonization

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Clean air captures attention whereas pollution distracts:evidence from brain activities

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Frontiers of Environmental Science & Engineering 2024年第4期18卷 5-15页

作者： Jianxun Yang Yunqi Liu Berry van den Berg Susie Wang Lele Chen Miaomiao Liu Jun Bi State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjing 210044China Nanjing Foreign Language School Nanjing 210008China Department of Experimental Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands Department of Social Psychology University of GroningenGrote Kruisstraat 2/19712 TSGroningenThe Netherlands School of Education Science Nantong UniversityNantong 226019China

Awareness of the adverse impact of air pollution on attention-related performance such as learning and driving is rapidly ***,there is still little known about the underlying neurocognitive *** an adapted dot-probe task paradigm and event-related potential(ERP)technique,we investigated how visual stimuli of air pollution influence the attentional allocation *** were required to make responses to the onset of a target presented at the left or right visual *** probable location of the target was forewarned by a cue(pollution or clean air images),appearing at either the target location(attention-holding trials)or the opposite location(attention-shifting trials).Behavioral measures showed that when cued by pollution images,subjects had higher response accuracy in attention-shifting *** analysis results revealed that after the cue onset,pollution images evoked lower N300 amplitudes,indicating less attentioncapturing effects of dirty *** the target onset,pollution cues were correlated with the higher P300 amplitudes in attention-holding trials but lower amplitudes in attention-shifting *** indicates that after visual exposure to air pollution,people need more neurocognitive resources to maintain attention but less effort to shift attention *** findings provide the first neuroscientific evidence for the distracting effect of air *** conclude with several practical implications and suggest the ERP technique as a promising tool to understand human responses to environmental stressors.

关键词： Air pollution Attention Disengagement Performance Event-related potential

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Insight into Enhanced Bromate Photo-Reduction Over Magnetically Recyclable Fe3o4/Tio2/Bi Composites Under Uv Light Irradiation: Performance, Mechanism and Applications

SSRN

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SSRN 2023年

作者： Xu, Ying Ji, Xingli Li, Lei Li, Ping Zhang, Wei Yu, Shuili State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China

Research on bromate (BrO3-) removal from drinking water has received much attention recently due to its carcinogenic and genotoxicity. In this study, magnetic Fe3O4/TiO2/Bi composites were synthesized by a simple one-pot solvothermal method to degrade BrO3-. Results showed that over 99% of BrO3- could be removed with a 0.2 g/L dosage of Fe3O4/TiO2/Bi-5% composite in 20 min under UV irradiation at an intensity of 2.3 mW/cm-2 and pH of 7.0 and its removal rate (k = 0.214 min–1) was 13.7 times higher than that of pure TiO2 (k = 0.0156 min–1). On the one hand, adding Fe3O4 particles increased the electrical conductivity of the composites and provided a possible way to recover the composites by magnetic attraction. On the other hand, the loading of bismuth (Bi) enhanced the light absorption of the composite. In addition, Bi acted as hole trapping centers to improve the efficiency of carrier separation and consumed holes by oxidizing Bi0 to Bi3+, thus avoiding the use of hole sacrificial agents. The strong photocatalytic activity was well maintained after the fifth cyclic treatment, indicating both good recoverability and high performance of the novel composites. The efficiency of BrO3- removal in tap water was less than that in deionized (DI) water, mainly due to the consumption of photo-generated electrons by coexisting ions and the adsorption of natural organic matter (NOM) on composites. The enhanced photocatalytic activity and magnetic recyclability made Fe3O4/TiO2/Bi composites a promising candidate for BrO3- removal in drinking water. © 2023, The Authors. All rights reserved.

关键词： Titanium dioxide

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