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Far UVC photolysis of PDS and H2O2 in saline water generates disinfection By-products

Water Research 2025年 283卷 123866页

作者： Guan, Jingmeng Huang, Huang Chu, Wenhai Yang, Xin School of Environmental Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen University Guangzhou510275 China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

Far-UVC-driven (222 nm) advanced oxidation processes (UV222/AOPs) have gained increasing attentions for water decontamination owing to their high yields of reactive species and rapid degradation rate constants of emerging contaminants. However, the formation of toxic disinfection by-products (DBPs) during UV222/AOP treatments of saline water remains unexplored. In this study, we demonstrated that DBPs generated in UV222/PDS and UV222/H2O2 treatment of saline water with the presence of 0.5 M Cl⁻ was 3.55–4.50 and 1.47–1.61 times higher, respectively, compared to those generated in UV254/PDS and UV254/H2O2. Adsorbable organic halogen (AOX) generated in UV222/AOPs was also higher than UV254/AOPs. Notably, DBPs and AOX generated from Suwannee River fulvic acid (SRFA) in UV222/PDS treatment were 32.33 times and 6.14 times higher than in UV222/H2O2, primarily due to the elevated concentration of reactive halogen species and the accumulation of hypochlorous acid/ hypohalite. Moreover, the presence of Br⁻ in saline water led to the conversion of chlorinated DBPs into brominated DBPs in both UV222/PDS and UV222/H2O2, significantly increasing the overall toxicity associated with DBPs. Increasing the pH from 5.0 to 9.0 was found to reduce DBP-associated toxicity. This study highlights the formation of toxic DBPs in UV222/AOPs and provides theoretical foundation for the selection and regulation of UV222/AOPs from the perspective of DBP control. © 2025 Elsevier Ltd

关键词： Disinfection

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Flow analysis of major and trace elements in residues from large-scale sewage sludge incineration

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Journal of Environmental Sciences 2021年第4期33卷 99-109页

作者： Siyuan Yu Hua Zhang Fan Lü Liming Shao Pinjing He State Key Laboratory of Pollution Control and Resource Reuse Tongji UniversityShanghai 200092China Institute of Waste Treatment&Reclamation College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Increase of sewage sludge(SS)has led to the construction of more incineration plants,exacerbating to the production of SS incineration ***,few studies have considered the mass balance of elements in large-scale SS incineration plants,affecting the residues treatment and *** this study,flow analysis was conducted for major and trace elements in the SS,the fly ash(sewage sludge ash,SSA)and bottom ash from two large-scale SS incineration *** elemental characteristics were compared with those of coal fly ash(CFA),and air pollution control residues from municipal solid waste incineration(MSWIA),as well as related *** results showed that the most abundant major element in SSA was Si,ranging from 120 to 240 g/kg,followed by Al(76–348 g/kg),Ca(26–113 g/kg),Fe(35–80 g/kg),and P(26–104 g/kg),and the trace elements were mainly Zn,Ba,Cu,and *** all the major elements were derived from *** trace elements in the SS incineration residues accounted for 82.4%–127%of those from SS,indicating that SS was the main source of trace *** partitioning of heavy metals in the SS incineration residues showed that electrostatic precipitator ash or cyclone ash with high production rates were the major pollutant *** differences in some major and trace elements could be indicators to differentiate SSA from CFA and *** with related land criteria,the pollutants in SSA should not be ignored during disposal and utilization.

关键词： Sewage sludge ash Sewage sludge incineration Electrostatic precipitator ash Cyclone ash Flow analysis Mass balance

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Elevated Atmospheric CO_(2)Reduced Antibiotics Accumulation in Rice Grains and Soil ARGs Abundance in Multiple Antibiotics-contaminated Paddy Fields

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Chemical Research in Chinese Universities 2023年第3期39卷 455-464页

作者： WANG Yabo XU Meiling WANG Xiaojie AI Fuxun DU Wenchao YIN Ying JI Rong GUO Hongyan State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing210023China Joint International Research Centre for Critical Zone Science-University of Leeds and Nanjing University Nanjing UniversityNanjing210023China School of Environment Nanjing Normal UniversityNanjing210036China College of Environmental Science and Engineering Yangzhou UniversityYangzhou225127China

Antibiotic resistance genes(ARGs)as new pollutants have become a global environmental pollution problem in recent *** atmospheric CO_(2) is one of the major factors affecting global climate ***,the impacts of elevated CO_(2) on soil ARGs in multiple antibiotics-contaminated paddy soils are largely *** this study,six antibiotics including sulfadiazine(SDZ),sulfamethoxazole(SMZ),tetracycline(TC),oxytetracycline(OTC),enrofloxacin(ENR),and ciprofloxacin(CIP)were selected to investigate their combined effects on rice biomass,antibiotics accumulation,soil bacterial community and ARGs under elevated CO_(2) *** showed that elevated CO_(2) significantly reduced the accumulation of SMZ,OTC,ENR,and CIP in rice grains by 18.98%,20.07%,41.73%,and 44.25%,*** CO_(2) could affect soil microbialβ-diversity,and tend to reduce the microbial functions of human diseases,organismal systems,and genetic information *** addition,elevated CO_(2) significantly decreased the abundance of sulfonamide ARGs,tetracycline ARGs,and quinolone ARGs by 19.59%,18.58%,and 28.96%,respectively,while increased that of multidrug ARGs by 11.54%.Overall,this study emphasized that elevated CO_(2) may mitigate the threat of antibiotics contamination to rice food security but aggravate the environmental risk of multidrug ARGs in soil,contributing to a better understanding of the consequences of elevated CO_(2) levels on food security and soil ecological health in multiple antibiotics-contaminated paddy fields.

关键词： Antibiotics Antibiotic resistance gene(ARG) Bacterial community Elevated CO_(2) Rice

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A nanoscale observation to explain the discrepancy of electron exchange capacities between biochar containing comparable surface redox-active moieties

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Biochar 2022年第1期4卷 503-517页

作者： Shasha Li Liming Shao Hua Zhang Xuemin Lu Fan Lü Pinjing He State Key Laboratory of Pollution Control and Resource Reuse Tongji UniversityShanghai 200092People’s Republic of China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092People’s Republic of China Institute of Waste Treatment and Reclamation Tongji UniversityShanghai 200092People’s Republic of China Shanghai Multi-Source Solid Waste Collaborative Treatment and Energy Engineering Technology Research Center ShanghaiPeople’s Republic of China

Biochar,possessing electron exchange capacities(EEC),is generally involved in environmental redox reactions due to the presence of redox-active moieties(RAMs).The phenomenon that chars containing comparable RAMs possess differential EEC revealed that the accessibility of RAMs is important to the redox ***,many studies have focused on the type of RAMs,whereas the distribution has been insufficiently ***,we achieved nanoscale observation of electroactive moieties on the surface of six chars using a conductive atomic force *** the two specific kinds of chars with submicron particles and opposite current distributions,the submicron particles took up only 1-4‰wt of biochar accounting for approximately 30-50%of electron-donating capacity(EDC),and electron-accepting capacity(EAC)became 87%and 1.40 times as before after removing submicron particles,***,the combined impact of RAMs and surface topography(that uneven distribution of RAMs resulted in outstanding EEC by enhancing accessibility)was ***,direct evidence of the link between char structure and EEC(that condensed aromatic structures were indispensable to EAC while both heteroatoms and amorphous aromatics contributed to EDC)was *** findings can aid in understanding the functions of biochar in biotic and abiotic redox processes.

关键词： Biochar Pyrogenic chars Redox property Electron exchange capacity C-AFM

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Same stimuli,different responses:a pilot study assessing air pollution visibility impacts on emotional well-being in a controlled environment

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Frontiers of Environmental Science & Engineering 2023年第2期17卷 71-81页

作者： Jianxun Yang Qi Gao Miaomiao Liu John S.Ji 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 Vanke School of Public Health Tsinghua UniversityBeijing 100084China Global Health Research Center Duke Kunshan UniversityKunshan 215316China

A growing number of studies have shown that impaired visibility caused by particulate matter pollution influences emotional ***,evidence is still scant on how this effect varies across individuals and over repetitive visual exposure in a controlled ***,we designed a lab-based experiment(41 subjects,6 blocks)where participants were presented with real-scene images of 12 different PM_(2.5) concentrations in each *** valence(negative to positive)and arousal(calm to excited)were self-rated by participants per image,and the response time for each rating was *** find that as pollution level increases from 10 to 260µg/m3,valence scores decrease,whereas arousal scores decline first and then bounce back,following a U-shaped *** air quality deteriorates,individual variability decreases in hedonic valence but increases in *** blocks,repetitive visual exposure increases valence at a moderate pollution level but aggravates negative emotions in severely polluted conditions(>150µg/m3).Finally,we find females,people who are slow in making responses,and those who are highly aroused by clean air tend to express more negative responses(so-called negativity bias)to ambient pollution than their respective *** results provide deeper insights into individual-level emotional responses to dirty air in a controlled *** the findings in our pilot study should only be directly applied to the conditions assessed herein,we introduce a framework that can be replicated in different regions to assess the impact of air pollution on local emotional wellbeing.

关键词： Air pollution Emotional wellbeing Variability Visual exposure Emotional bias

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Climate Downscaling Using Neural Operator: Spatiotemporal Multimodal Fusion Operator with state-Query Coupled Kernel

Climate Downscaling Using Neural Operator: Spatiotemporal Mu...

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2025 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2025

作者： Zhang, Haodi Wang, Yichi Jian, Yifan Jiang, Jiahui Bai, Zhaohai Ma, Lin College of Computer Science and Software Engineering Shenzhen University China Center for Agricultural Resources Research Institute of Genetic and Developmental Biology Chinese Academy of Sciences China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University China

ISBN: (纸本)9798350368741

Climate downscaling is crucial for detailed small-scale analysis and for acquiring climate data in regions without weather stations. Operator learning has proven potential for this task. However, several challenges remain in operator learning, such as multimodal fusion, spatiotemporal fusion and input state and query adaptation. To address these challenges, we propose a Spatiotemporal Multimodal Fusion Operator with a state-Query Coupled Kernel (SMCK). This framework includes a latent space fusion encoder that encodes climate variables using position-wise multihead attention for multimodal fusion and integrates historical information to generate robust and precise representation. Additionally, we introduce a state-query coupled kernel that combines radial basis functions and discrete fourier encoding to enhance query location representation, while also adapting to the state to obtain the coupled kernel. Extensive experiments demonstrate that our method achieves state-ofthe-art performance and provides strong support for climate downscaling and the planning of climate-related strategies. © 2025 IEEE.

关键词： Climate downscaling Deep Learning Multimodal fusion Operator learning Time series forecasting

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Application of Fe^Ⅲ-TAML/H2O_(2) system for treatment of fluoroquinolone antibiotics

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Journal of Environmental Sciences 2021年第1期33卷 110-118页

作者： Zeyu Xian Sijia Liang Xin Jin Haoting Tian Jingyi Ling Chao Wang State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanijing UniversityNanjing 210023China Shandong Prouincial Key Laboratory of Water and Soil Conservation and Enuironmental Protection College of Resource and EnvironmentLinyi UniversityLinyi 276005China

Over the recent past,fluoroquinolone antibiotics(FQs)have raised extensive attention due to their potential to induce the formation of resistance genes and"superbugs",thus various advanced oxidation techniques have been developed to eliminate their release into the *** the present study,the prototype tetraamido macrocyclic ligand(Fe^Ⅲ-TAML)/hydrogen peroxide(H2O_(2))system is employed to degrade FQs(i.e.,norfloxacin and ciprofloxacin)over a wide p H range(i.e.,p H 6-10),and the reaction rate increases with the increase in p H *** effect of dosage of Fe^Ⅲ-TAML and H2O_(2) on the degradation of FQs is evaluated,and the reaction rate is linearly correlated with the added amount of ***,the impact of natural organic matters(NOM)on the removal of FQs is investigated,and the degradation kinetics show that both NOM type and experimental concentration exhibit negligible influence on the oxidative degradation of selected *** on the results of liquid chromatography-high resolution mass spectrometry and theoretical calculations,the reaction sites and pathways of FQs by Fe^Ⅲ-TAML/H2O_(2) system are further predicted and elucidated.

关键词： Fluoroquinolone antibiotics Tetraamido macrocyclic ligand Catalytic degradation Natural organic matters

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Peroxymonosulfate enhanced photoelectrocatalytic oxidation of organic contaminants and simultaneously cathodic recycling of silver

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Journal of Environmental Sciences 2022年第10期34卷 74-83页

作者： Huixin Shao Xia Li Juanjuan Zhang Xu Zhao Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Beijing Capital Co.Ltd. Beijing 100028China

Degradation of organic contaminants with simultaneous recycling of Ag+from silvercontaining organic wastewater such as photographic effluents is desired. Although photoelectrocatalysis(PEC) technology is a good candidate for this type of wastewater, its reaction kinetics still needs to be improved. Herein, peroxymonosulfate(PMS) was employed to enhance the PEC kinetics for oxidation of phenol(PhOH) at the anode and reduction of Ag^(+) at the cathode. The degradation efficiency of phenol(PhOH, 0.1 mmol/L) was increased from 42.8% to 96.9% by adding 5 mmol/L PMS at a potential of 0.25 V. Meanwhile, the Ag(by wt%)deposited on the cathode was 28.1%(Ag_(2)O) in PEC process, while that of Ag(by wt%) was 69.7%(Ag^(0)) by adding PMS. According to the electrochemistry analysis, PMS, as photoelectrons acceptor, enhances the separation efficiency of charges and the direct hoxidation of Ph OH at the photoanode. Meantime, the increasing cathode potential avoided Hevolution and strongly alkaline at the surface of cathode, thus enabling the deposition of Ag+in the form of metallic silver with the help of PMS. In addition, PMS combined with PEC process was effective in treating photographic effluents.

关键词： Peroxymonosulfate Photoelectrocatalysis Organic contaminants degradation Silver recycling Photographic effluents

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Evaluating eDNA and eRNA metabarcoding for aquatic biodiversity assessment: From bacteria to vertebrates

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Environmental Science and Ecotechnology 2024年第5期21卷 396-404页

作者： Yan Zhang Yu Qiu Kai Liu Wenjun Zhong Jianghua Yang Florian Altermatt Xiaowei Zhang State Key Laboratory of Pollution Control&Resource Reuse School of the EnvironmentNanjing UniversityNanjing210023China Department of Evolutionary Biology and Environmental Studies University of ZurichZürichSwitzerland Department of Aquatic Ecology Eawag:Swiss Federal Institute of Aquatic Science and TechnologyDübendorfSwitzerland Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization Ministry of Agriculture and Rural AffairsFreshwater Fisheries Research CenterChinese Academy of Fishery SciencesWuxi214081China

The monitoring and management of aquatic ecosystems depend on precise estimates of *** analyses of environmental nucleic acids(eNAs),including environmental DNA(eDNA)and environmental RNA(eRNA),have garnered attention for their cost-effective and non-invasive biomonitoring ***,the accuracy of biodiversity estimates obtained through eNAs can vary among different organismal *** we evaluate the performance of eDNA and eRNA metabarcoding across nine organismal groups,ranging from bacteria to terrestrial vertebrates,in three crosssections of the Yangtze River,*** observe robust complementarity between eDNA and eRNA *** relative detectability of eNAs was notably influenced by major taxonomic groups and organismal sizes,with eDNA providing more robust signals for larger *** eDNA and eRNA exhibited similar cross-sectional and longitudinal ***,the detectability of larger organisms declined in eRNA metabarcoding,possibly due to differential RNA release and decay among different organismal groups or *** underscoring the potential of eDNA and eRNA in large river biomonitoring,we emphasize the need for differential interpretation of eDNA versus eRNA *** highlights the importance of careful method selection and interpretation in biomonitoring studies.

关键词： Environmental nucleic acids Aquatic biodiversity Organismal size Species detectability

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Degradation of Enrofloxacin Antibiotic by Ultraviolet Activated Persulfate Advanced Oxidation Process: Inorganic Anions Effects and Mechanisms 6th

Degradation of Enrofloxacin Antibiotic by Ultraviolet Activa...

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6th International Symposium on Water Resource and Environmental Management, WREM 2023

作者： Chen, Juxiang Wang, Kai Xie, Wanying Gao, Yuqiong Liao, Zhenliang Gao, Naiyun College of Civil Engineering and Architecture Xinjiang University Xinjiang Urumqi830017 China School of Environment and Architecture Shanghai University of Technology Shanghai200093 China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai200092 China

ISBN: (纸本)9783031559884

Enrofloxacin (ENR) is continually detected in natural water environment, becoming one threaten if treating untimely. Performance and mechanism of ENR degradation by ultraviolet (UV)/persulfate (PDS) technology was systematically investigated. Degradation efficiency by UV/PDS was 5.4 times of UV alone, due to the higher rate constant (kobs) of 5.848 × 10–2 min−1. Quencher experiments showed, ·SO4- and ·OH were the major free radicals generated by UV/PDS, and the corresponding contribution rate on degrading ENR was 65.2 and 17.2%. Results of electrical energy per order (EE/O) demonstrated, UV/PDS was less energy consumption and more economical. Moreover, when high concentration of Cl- (10 mM) or low concentration of NO3- (1 mM) co-existed with ENR, the degradation capability by UV/PDS process was slightly promoted, while the negatively effect of CO32- was obvious. Using density functional theory (DFT) and Fukui functions to analyze the possible active sites of ENR, and the results illustrated that C28 and C30 on piperazine ring of ENR was attacked by UV/PDS process, according to the effect of substitution and de-alkylation. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Free radicals

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