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Cotransport of nanoplastics with nZnO in saturated porous media:From brackish water to seawater

Journal of environmental Sciences 2025年第2期148卷 541-552页

作者： Yuanzhang Hou Yange Wang Yidi Zhang Zhibo Lu Zhenbo Zhang Zhiqiang Dong Yuping Qiu Department of Environmental Science College of Environmental Science and EngineeringTongji UniversityState Key Laboratory of Pollution Control and Resources ReuseShanghai Institute of Pollution Control and Ecological SecurityShanghai 200092China School of Medicine Tongji UniversityShanghai 200065China Municipal Environmental Protection Engineering Co. Ltd of CERC Shanghai GroupShanghai 201906China China Railway Engineering Group Co. Beijing 100039China

The ocean serves as a repository for various types of artificial ***(NPs)and nano zinc oxide(nZnO),which are frequently employed in personal care products and food packaging materials,are likely simultaneously released and eventually into the ocean with surface ***,their mutual influence and shared destiny in marine environment cannot be *** study examined how nanomaterials interacted and transported through sea sand in various salinity *** showed that NPs remained dispersed in brine,while nZnO formed *** seawater of 35 practical salinity units(PSU),nZnO formed heteroaggregates with NPs,inhibiting NPs mobility and decreasing the recovered mass percentage(Meff)from 24.52%to 12.65%.In 3.5 PSU brackish water,nZnO did not significantly aggregate with NPs,and thus barely affected their ***,NPs greatly enhanced nZnO transport with Meff increasing from 14.20%to 25.08%,attributed to the carrier effect of higher mobility *** from brackishwater to seawater was simulated in salinity change experiments and revealed a critical salinity threshold of 10.4 PSU,below which the mobility of NPs was not affected by coexisting nZnO and above which nZnO strongly inhibited NP *** study highlights the importance of considering the mutual influence and shared destiny of artificial nanoparticles in the marine environment and how their interaction and cotransport are dependent on changes in seawater salinity.

关键词： Homoaggregate Heteroaggregate Transport Sea sand Salinity threshold

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Occurrence and Decay of SARS-CoV-2 in Community Sewage Drainage Systems

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Engineering 2023年第7期26卷 214-219,I0008,I0009页

作者： Qian Dong 蔡俊雄刘艳臣凌海波 Qi Wang Luo-Jing Xiang Shao-Lin Yang Zheng-Sheng Lu Yi Liu Xia Huang 曲久辉 State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Hubei Provincial Academy of Eco-Environmental Sciences Wuhan 430072China Key Laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

The rapid spread of the coronavirus disease(COVID-19)pandemic in over 200 countries poses a substantial threat to human *** acute respiratory syndrome coronavirus 2(SARS-CoV-2),which causes COVID-19,can be discharged with feces into the drainage ***,a comprehensive understanding of the occurrence,presence,and potential transmission of SARS-CoV-2 in sewers,especially in community sewers,is still *** study investigated the virus occurrence by viral nucleic acid testing in vent stacks,septic tanks,and the main sewer outlets of community where confirmed patients had lived during the early days of the epidemic in Wuhan,*** results indicated that the risk of long-term emission of SARS-CoV-2 to the environment via vent stacks of buildings was low after confirmed patients were ***-CoV-2 were mainly detected in the liquid phase,as opposed to being detected in aerosols,and its RNA in the sewage of septic tanks could be detected for only four days after confirmed patients were *** surveillance of SARS-CoV-2 in sewage could be a sensitive indicator for the possible presence of asymptomatic patients in the community,though the viral concentration could be diluted more than ten times,depending on the sampling site,as indicated by the Escherichia coli *** comprehensive investigation of the community sewage drainage system is helpful to understand the occurrence characteristics of SARS-CoV-2 in sewage after excretion with feces and the feasibility of sewage surveillance for COVID-19 pandemic monitoring.

关键词： SARS-CoV-2 Transmission risk Drainage system Sewage Community

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New insights into the evaluation of anaerobic properties of sludge:Biodegradability and stabilization

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Journal of environmental Sciences 2021年第2期33卷 158-166页

作者： Jun Gao Xiaoyan Zhao Sisi Chen Bin Dong Xiaohu Dai State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

Evaluating anaerobic biodegradability of sludge and then identifying the stabilization of digestate is necessary in sludge treatment and disposal.48 sludge samples from 24 typical waste water treatment plants(WWTPs)in 11 provinces in China were selected to investigate the relationship between Biochemical Acidogenic Potential(BAP)test and Biochemical Methane Potential(BMP)*** volatile fatty acid(VFA)production obtained from BAP tests was found linearly related to the ultimate methane production from corresponding BMP *** results were obtained with Pearson correlation coefficient as 0.929 and R^2 value as ***,the physio-chemical characteristics(FCI,SUVA254,E 4/E 6)of supernatant,which were associated with humic-like substances(HS),were investigated before and after BMP *** which a new criterion(FCI>1.50,SUVA 254>1.10,E 4/E 6<4.0)was proposed to evaluate the stabilization level of anaerobic digested sludge.

关键词： Sludge Anaerobic digestion Biodegradability Stabilization Biochemical acidogenic potential Physio-chemical characteristics

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Distribution of antibiotic resistance genes and their association with bacteria and viruses in decentralized sewage treatment facilities

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Frontiers of environmental Science & Engineering 2022年第3期16卷 91-104页

作者： Jiaheng Zhao Bing Li Pin Lv Jiahui Hou Yong Qiu Xia Huang School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

The distribution of antibiotic resistance genes(ARGs)has been intensively studied in large-scale wastewater treatment plants and livestock ***,small-scale decentralized sewage treatment facilities must also be explored due to their possible direct exposure to *** this study,six wastewater treatment facilities in developed rural areas in eastern China were investigated to understand their risks of spreading *** metagenomics and network analysis tools,ARGs and bacterial and viral communities were identified in the influent(INF)and effluent(EFF)*** dominant ARGs belonged to the bacitracin class,which are different from most of municipal wastewater treatment plants(WWTPs).The dominant hosts of ARGs are Acidovorax in bacterial communities and Prymnesiovirus in viral ***,a positive relationship was found between ARGs and *** ARGs significantly correlated with phages were all hosted by specific genera of bacteria,indicating that phages had contributed to the ARG’s proliferation in sewage treatment *** significant concern on the possible enhanced risks caused by bacteria,viruses and their related ARGs in decentralized sewage treatment facilities is necessary.

关键词： Decentralized sewage treatment facilities Antibiotic resistance genes Virus Metagenomics Network analysis

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Quantitative Indicators of as and Cd Release from Various Soils Under Flooding Condition

SSRN

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SSRN 2024年

作者： Ge, Jingwen Wu, Song Wu, Haotian Lin, Jianyu Cai, Yijun Zhou, Dongmei Gu, Xueyuan State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing China Nanjing University China

Although the mobility of arsenic (As) and cadmium (Cd) in soils during the flooding-drainage process has been intensively studied, quantifying their dissolution among various soils still remains a challenge. After comprehensively monitoring multiple parameters related to As and Cd dissolution in 8 soils for a 60-day anaerobic incubation, the redundancy analysis (RDA) and structural equation model (SEM) were employed to identify the key factors and influencing pathways controlling the dynamic release of As and Cd. Results showed that pH alone explained 90.5% Cd dissolution, while the dissolved-Fe(II) and 5M-HCl extractable Fe(II) jointly only explained 50.6% As dissolution. After data normalization, the ratio of Fe(II) to 5M-HCl extracted total Fe (i.e. / ) significantly improved the correlation to R2= 0.824 (p © 2024, The Authors. All rights reserved.

关键词： Dissolution

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Steam disinfection releases micro(nano)plastics from silicone-rubber baby teats as examined by optical photothermal infrared microspectroscopy (vol 17, pg 76, 2022)

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NATURE NANOTECHNOLOGY 2022年第6期17卷 672-672页

作者： Su, Yu Hu, Xi Tang, Hongjie Lu, Kun Li, Huimin Liu, Sijin Xing, Baoshan Ji, Rong State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing China Quantum Design (Beijing) Co. Ltd Beijing China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China Stockbridge School of Agriculture University of Massachusetts Amherst MA USA

Silicone-rubber baby teats used to bottle-feed infants are frequently disinfected by moist heating. However, infant exposure to small microplastics (0.66 million elastomer-derived micro-sized plastics (MPs) (roughly 8... 详细信息

Silicone-rubber baby teats used to bottle-feed infants are frequently disinfected by moist heating. However, infant exposure to small microplastics (<10 μm) potentially released from the heated teats by hydrothermal decomposition has not been studied, owing to the limitations of conventional spectroscopy in visualizing microplastic formation and in characterizing the particles at the submicrometre scale. Here both the surfaces of silicone teats subjected to steam disinfection and the wash waters of the steamed teats were analysed using optical-photothermal infrared microspectroscopy. This new technique revealed submicrometre-resolved steam etching on and chemical modification of the teat surface. Numerous flake- or oil-film-shaped micro(nano)plastics (MNPs) (in the size range of 0.6–332 μm) presented in the wash waters, including cyclic and branched polysiloxanes or polyimides, which were generated by the steam-induced degradation of the base polydimethylsiloxane elastomer and the polyamide resin additive. The results indicated that by the age of one year, a baby could ingest >0.66 million elastomer-derived micro-sized plastics (MPs) (roughly 81% in 1.5–10 μm). Global MP emission from teat disinfection may be as high as 5.2 × 1013 particles per year. Our findings highlight an entry route for surface-active silicone-rubber-derived MNPs into both the human body and the environment. The health and environmental risks of the particles are as yet unknown.

关键词： environmental health and safety issues Imaging techniques Materials Science general Nanotechnology Nanotechnology and Microengineering

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New Insights into Microplastic Contamination in Different Types of Leachates: Abundances, Characteristics, and Potential Sources

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Engineering 2024年第6期37卷 62-68页

作者： Lei Zhang Wentao Zhao Liang Zhang Zhenxiao Cai Ruiqi Yan Xia Yu Damià Barceló Qian Sui State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental EngineeringEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China PerkinElmer Inc.Shanghai 201203China Maihai Environmental Protection Technology Co. Ltd.SuzhouJiangsu 215000China Department of Environmental Chemistry Institute of Environmental Assessment and Water ResearchSpanish Council for Scientific Research(IDAEA-CSIC)Barcelona 08034Spain

Municipal solid waste(MSW)is an important destination for abandoned *** the waste disposal process,large plastic debris is broken down into microplastics(MPs)and released into the ***,current research only focuses on landfill leachates,and the occurrence of MPs in other leachates has not been ***,herein,the abundance and characteristics of MPs in three types of leachates,namely,landfill leachate,residual waste leachate,and household food waste leachate,were studied,all leachates were collected from the largest waste disposal center in *** results showed that the average MP abundances in the different types of leachates ranged from(129±54)to(1288±184)MP particles per liter(particlesL1)and the household food waste leachate exhibited the highest MP abundance(p<0.05).Polyethylene(PE)and fragments were the dominant polymer type and shape in MPs,*** characteristic polymer types of MPs in individual leachates were ***,the conditional fragmentation model indicated that the landfilling process considerably affected the size distribution of MPs in leachates,leading to a higher percentage(>80%)of small MPs(20–100 lm)in landfill leachates compared to other *** the best of our knowledge,this is the first study discussing the sources of MPs in different leachates,which is important for MP pollution control during MSW disposal.

关键词： Microplastics Landfill leachate Residual waste leachate Household food waste leachate Source

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High-solid anaerobic digestion of sewage sludge:achievements and perspectives

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Frontiers of environmental Science & Engineering 2021年第4期15卷 1-18页

作者： Ying Xu Hui Gong Xiaohu Dai State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092China

High-solid anaerobic digestion(HS-AD)has been applied extensively during the last few decades for treating various organic wastes,such as agricultural wastes,organic fractions of municipal solid wastes,and kitchen ***,the application of HS-AD to the processing of sewage sludge(SS)remains limited,which is largely attributable to its poor process stability and *** research has been conducted to attempt to surmount these *** this review,the main factors affecting process stability and performance in the HS-AD of SS are comprehensively reviewed,and the improved methods in current use,such as HS sludge pre-treatment and anaerobic co-digestion with other organic wastes,are ***,this paper also discusses the characteristics of substance transformation in the HS-AD of SS with and without thermal *** has shown that the HS effect is due to the presence of high concentrations of substances that may inhibit the function of anaerobic microorganisms,and that it also results in poor mass transfer,a low diffusion coefficient,and high ***,knowledge gaps in the current research on HS-AD of SS are *** on these,it proposes that future efforts should be devoted to standardising the definition of HS sludge,revealing the law of migration and transformation of pollutants,describing the metabolic pathways by which specific substances are degraded,and establishing accurate mathematical ***,developing green sludge dewatering agents,obtaining high value-added products,and revealing effects of the above two on HS-AD of SS can also be considered in future.

关键词： High-solid effect Anaerobic fermentation Methane production Biodegradability Sludge treatment

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Study on the mechanism by which anaerobic organisms remove nitrogen and sulfur from low-C/N rare earth tail water simultaneously

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environmental Science and pollution Research 2025年第20期32卷 12277-12284页

作者： Zhou, Gengxin Xiong, Zhensheng Luo, Qingchun Yang, Liming Geng, Yanni Liu, Zhuochao Hu, Yi Key Laboratory of Jiangxi Province for Persistent Pollutants Prevention Control and Resource Reuse Nanchang330063 China School of Environment and Energy Peking University Shenzhen Graduate School Guangdong Shenzhen518055 China National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology Beijing University of Technology Beijing100124 China ECO-ADVANCE CO LED Ganzhou Jiangxi341000 China

The low-C/N limits the simultaneous removal of the high sulfate and high ammonia nitrogen content in the rare earth tail water. How bacteria cycle sulfur and nitrogen in this environment is still unknown. As a result, there is a pressing need to treat such complicated tail water. This study built an anaerobic reactor to treat the rare earth tail water and employed anaerobic microorganisms. Following 104 days of operation, the rates of nitrogen removal for nitrate and nitrite are above 90%, and the removal rates of ammonia nitrogen and sulfate could reach 14.36 mg/(L·day) and 21.31 mg/(L·day), respectively. To identify the nitrogen and sulfur cycle in the reactor, the bacterial population and gene abundance were characterized using 16S rRNA sequencing and functional gene prediction. The results demonstrated that nitrogen from ammonia was primarily eliminated via assimilation, while nitrogen from nitrate was primarily eliminated by denitrification, which was strongly associated with Comamonas. The principal mechanism for eliminating the sulfate is assimilation, which is linked to the bacterium SBR1031. In conclusion, the nitrogen and sulfur cycle theoretically supports the simultaneous removal of sulfate and ammonia nitrogen from rare earth tail water under low-C/N circumstances. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.

关键词： Anaerobic bacteria Low-C/N Nitrogen-sulfur cycle Rare earth tail water

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Fast and efficient remediation of antimony-contaminated surface water and field soil using alumina supported Fe–Mn binary oxide

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Chemosphere 2024年 364卷 143165页

作者： Gong, Yanyan Bai, Yang Ye, Peilin Li, Hongbo College of Environment and Climate Guangdong Provincial Key Laboratory of Environmental Pollution and Health Jinan University Guangzhou511443 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing210023 China

Antimony (Sb) pollution in surface water and soil has earned extensive attention. Our previous study synthesized a new class of alumina supported Fe–Mn binary oxide (Fe–Mn@Al2O3) and found that MnO2 in the composite oxidized Sb(III) to Sb(V) and FeOOH and Al2O3 played an indispensable role in adsorption of Sb(III) and Sb(V). This study further explored the removal of Sb in surface water and in situ sequestration of Sb in Sb-contaminated field soil via Fe–Mn@Al2O3. Sb removal from water was pH independent and the removal efficiencies of Sb(III) and total Sb kept constant at 95.4% and 60.5%, respectively, over a pH range of 5.0–10.0. Increasing dissolved organic matter (DOM) from 0 to 22.8 mg/L had negligible effect on Sb(III) removal whereas inhibited the total Sb removal from 60.5% to 51.2%. Dissolved oxygen cannot oxidize aqueous Sb(III), yet, enhanced the Sb(III) removal whereas decreased the total Sb removal. The composite performed well in natural surface water with high DOM and inorganic ligands. In addition, the composite effectively immobilized Sb in field soil. 5% of the composite significantly inhibited the H2SO4 and HNO3 leachable Sb by 93.6% after 30 d. The amendment transformed the Sb speciation from more easily available fractions (i.e., exchangeable, carbonate-bound, and Fe–Mn oxides-bound species) into more stable fractions (i.e., organic material bound and residual species), leading to declined Sb bioaccessibility and reduced environmental risk. The composite facilitated a long-term stability of Sb in soil. The study demonstrated an easy, fast, and effective strategy for efficient immobilization of Sb in water and soil. © 2024

关键词： Heavy metals

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