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Modelling assisted phytoextraction of heavy metals from tannery origin leachate

Chemosphere 2025年 373卷 144113页

作者： Yahya, Faiza Nazir, Aisha Ahmad, Shoaib Alomrani, Sarah Owdah Shafiq, Muhammad Bareen, Firdaus e Alshehri, Mohammed Ali Ali, Shafaqat Institute of Botany University of the Punjab Lahore Pakistan State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu Nanjing210023 China Department of Biology College of Science and Arts Najran University Najran66252 Saudi Arabia The Institute of Molecular Biology and Biotechnology IMBB University of Lahore Pakistan Department of Biology Faculty of Science University of Tabuk Tabuk71491 Saudi Arabia Department of Environmental Sciences Government College University Faisalabad Faisalabad38000 Pakistan Department of Biological Sciences and Technology China Medical University Taichung40402 Taiwan

The toxic tannery solid waste leachate (TSWL) containing heavy metals is generated after the percolation of rainwater in openly dumped tannery solid waste (TSW) which poses a serious threat to the surroundings by leaching down and bioaccumulation. For its management, the phytoextraction potential of Pistia stratiotes L. and Spirodela polyrhiza L. Schleid. was analyzed by growing them individually and combining them in different dilutions of TSWL (0%, 5%, 10%, 15%, and 20%) for 30 days. The removal efficiency of metal content was 79.04% (Cr), 78.49% (Cd), and 88.11% (Cu) in P. stratiotes, 72.55% (Cr), 80.12% (Cd), and 77.70% (Cu) in S. polyrhiza while in the mixture it was 88.39% for Cr, 92.57% for Cd, and 90% for Cu. The translocation factor of all the metals for every plant was greater than 1 indicating that all the plants used in the study proved to be hyperaccumulators. The Langmuir model more efficiently described experimental data for Cd and Cu while the phytoextraction of Cr was explained by the Freundlich model. The RL and 1/n were © 2025 Elsevier Ltd

关键词： Heavy metals

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New Evidence for Linking the Formation of High Arsenic Aquifers in the Central Yangtze River Basin to Climate Change Since Last Glacial Maximum

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SSRN 2022年

作者： Xu, Yuxiao Deng, Yamin Zheng, Tianliang Du, Yao Jiang, Hongchen Pi, Kunfu Xie, Xianjun Gan, Yiqun Ma, Teng Wang, Yanxin State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution China University of Geosciences Wuhan430078 China University of Waterloo Canada School of Environmental Studies China University of Geosciences Wuhan430074 China College of Ecology and Environment Chengdu University of Technology Chengdu610059 China State Key Laboratory of Biogeology and Environmental Geology China University of Geosciences Wuhan430074 China

The prevalence of arsenic (As)-affected groundwater in the Late Pleistocene and Holocene aquifers leads to serious arsenicosis worldwide. However, the geogenic foundational processes underlying the high As aquifers remain elusive. Here we present joint lines of evidences from chronological, sediment geochemical and geomicrobial analysis that climate change since the Last Glacial Maximum (LGM) initiates the genesis of high As aquifers in the central Yangtze River Basin. Optically stimulated luminescence-based sediments dating and grain size characterization indicate that the LGM depositional boundary also separates the Late-Pleistocene/Holocene high arsenic aquifers from the underlying arsenic-depleted aquifers. Further examination of solid-phase As/Fe/S speciation and associated microbial communities function suggests that the pre-LGM depositional environments characteristic of S metabolism engender the fixation of As in pyrite, whereas during the post-LGM period climate change to warm and humid leads to As repartitioning to Fe/Mn oxides in response to strong chemical weathering. This may have contributed to a dynamic fate of As in the post-LGM depositional environments. Our results highlight the important roles of climate change has played in the genesis of high As aquifers, with implications for other LGM-affected regions worldwide as well as for the evolution of high arsenic aquifers under future climate change. © 2022, The Authors. All rights reserved.

关键词： Arsenic

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Eg Obital Occupancy-Dependent Intrinsic Catalytic Activity of Zn-Co-Mn Spinel Oxides for Peroxymonosulfate Activation

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SSRN 2022年

作者： Li, Wenqian Cheng, Haijun Zhang, Lijuan Wang, Xiaopeng Qian, Kun Zhang, Bin Ma, Jun He, Xu State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin150090 China Key Laboratory of Interfacial Physics and Technology Chinese Academy of Sciences Shanghai 201800 China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of Technology Harbin150001 China State Key Laboratory of Pollution Control and Resources Reuse College of Environmental Science and Engineering Tongji University Shanghai 200092 China

Transition metal (TM)-based spinel oxides have demonstrated excellent efficacy in Fenton-like reactions, but the existing model cannot fully explain the origin of catalytic activity. Here, we first discover a critical role of eg occupancy in governing the intrinsic activity of ZnCoxMn2-xO4 spinel oxides (x=0-2.0) for peroxymonosulfate (PMS) activation and pollutant degradation. The introduction of Co into ZnMn2O4 network lowers magnetic momentum, eg occupancy, and favors the overlap between TM eg and O 2p orbitals. ZnCo2O4 with optimal eg occupancy, favorable PMS binding strength, interaction capability, and radical desorption exhibits the best catalytic activity. Cyclic voltammetry (CV) and Density functional theory (DFT) corroborate that ZnMn2O4 (eg=0.97) exhibits inert activity due to weak affinity towards PMS. The eg occupancy from 0.43 in ZnCo2O4 to 0.77 in ZnCoMnO4 is found to weaken PMS binding. These useful insights may inspire the reasonable development of catalysts, assist the prediction and enhancement of catalytic activity. © 2022, The Authors. All rights reserved.

关键词： Catalyst activity

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Synergistic treatment of carbon dioxide and nitrogen-containing wastewater by electrochemical C-N coupling

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iScience 2023年第7期26卷 107009页

作者： Ye, Ye Li, Zhe Ding, Shichao Fu, Jiaju Liu, Hongzhi Zhu, Wenlei State Key Laboratory of Pollution Control and Resource Reuse State Key Laboratory of Analytical Chemistry for Life Science the Frontiers Science Center for Critical Earth Material Cycling School of the Environment School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 China Sino-Japan Friendship Center for Environmental Protection Beijing 100029 China School of Mechanical and Materials Engineering Washington State University Pullman 99164 WA United States International Ecological Economy Promotion Association Beijing 100005 China

Electrocatalytic CO2 reduction technology has been considered a promising approach to alleviate the severe environmental and energy issues caused by the anthropogenic over-emission of CO2. Coupling CO2 reduction with ... 详细信息

Electrocatalytic CO₂ reduction technology has been considered a promising approach to alleviate the severe environmental and energy issues caused by the anthropogenic over-emission of CO₂. Coupling CO₂ reduction with nitrogen (N)-pollutants reduction from wastewater to produce higher valued products (e.g., urea, amide, amine, etc.) could significantly extend the application scenarios and product categories of CO₂ reduction technologies. This paper investigates the available CO₂ and N-pollutants sources and summarizes the recent progress of electrocatalytic C-N coupling reactions. Based on the fundamental research, technical concerns for scale-up applications of C-N coupling electrocatalysis are thoroughly discussed. Finally, we prospect the opportunities and challenges with an in-depth understanding of the underlying dominant factors in applying C-N coupling electrocatalysis. Further development in recycling CO₂ and N pollutants via the electrocatalytic C-N coupling process is also discussed. © 2023 The Author(s)

关键词： Catalysis Electrochemistry Engineering

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Phthalates released from microplastics inhibit microbial metabolic activity and induce different effects on intestinal luminal and mucosal microbiota

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Environmental pollution 2022年 310卷 119884页

作者： Yan, Zehua Zhang, Shenghu Zhao, Yonggang Yu, Wenyi Zhao, Yanping Zhang, Yan State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu Nanjing210023 China Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Jiangsu Nanjing210042 China Environment Monitoring Center of Jiangsu Province Jiangsu Nanjing210019 China School of Environment Nanjing Normal University Jiangsu Nanjing210023 China

The intestine is not only the main accumulation organ of microplastics (MPs), but also the intestinal environment is very conductive to the release of additives in MPs. However, the kinetics of release process, influence factors, and the related effects on gut microbiota remain largely unknown. In this study, a mucosal-simulator of the human intestinal microbial ecosystem (M-SHIME) was used to investigate the influence of gut microbiota on the release of phthalates (PAEs) from MPs and the effects of MPs on the intestinal luminal microbiota and mucosal microbiota. We found that di-(2-ethylhexyl) phthalate (DEHP), di-n-butyl phthalate (DBP), and dimethyl phthalate (DMP) were the dominant PAEs released in the gut. Gut microbiota accelerated the release of PAEs, with the time to reach the maximum release was shortened from 7 days to 2 days. Moreover, MPs induced differential effects on luminal microbiota and mucosal microbiota. Compared with mucosal microbiota, the luminal microbiota was more susceptible to the leaching of PAEs from MPs, as evidenced by more microbiota alterations. MPs also inhibited the metabolic activity of intestinal flora based on the reduced production of short chain fatty acids (SCFA). These effects were mainly contributed by the release of PAEs. Acidaminococcus and Morganella were simultaneously correlated to the release of PAEs and the inhibition of metabolic activity of intestinal microbiota and can be used as indicators for the intestinal exposure of MPs and additives. © 2022 Elsevier Ltd

关键词： Additives

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水源中的消毒副产物及其前体物——来源、影响因素和环境启示（英文）

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Engineering 2024年第5期 36-50页

作者：肖融邓扬徐祖信楚文海 State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and Engineering Tongji University Ministry of Education Key Laboratory of the Yangtze River Water Environment Tongji University Department of Earth and Environmental Studies Montclair State University

Tracing the contamination origins in water sources and identifying the impacts of natural and human processes are essential for ecological safety and public health. However, current analysis approaches are not ideal, as they tend to be laborious, time-consuming, or technically difficult. Disinfection byproducts(DBPs) are a family of well-known secondary pollutants formed by the reactions of chemical disinfectants with DBP precursors during water disinfection treatment. Since DBP precursors have various origins(e.g., natural, domestic, industrial, and agricultural sources), and since the formation of DBPs from different precursors in the presence of specific disinfectants is distinctive, we argue that DBPs and DBP precursors can serve as alternative indicators to assess the contamination in water sources and identify pollution origins. After providing a retrospective of the origins of DBPs and DBP precursors, as well as the specific formation patterns of DBPs from different precursors, this article presents an overview of the impacts of various natural and anthropogenic factors on DBPs and DBP precursors in drinking water sources. In practice, the DBPs(i.e., their concentration and speciation) originally present in source water and the DBP precursors determined using DBP formation potential testsDin which water samples are dosed with a stoichiometric excess of specific disinfectants in order to maximize DBP formation under certain reaction conditionsDcan be considered as alternative metrics. When jointly used with other water quality parameters(e.g., dissolved organic carbon, dissolved organic nitrogen, fluorescence, and molecular weight distribution) and specific contaminants of emerging concern(e.g., certain pharmaceuticals and personal care products), DBPs and DBP precursors in drinking water sources can provide a more comprehensive picture of water pollution for better managing water resources and ensuring human health.

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Bisthiourea Immobilized Uio-66-Nh2 Supported Fe2o3 Nanoparticles to Accelerate Dual Centers Fenton-Like Reaction

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SSRN 2022年

作者： Huang, Xu Fan, Xiaohu Li, Aimin Tian, Yechao Li, Dawei State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China School of Water Conservancy and Civil Engineering Northeast Agricultural University Heilongjiang Harbin150030 China School of Environmental Science and Engineering Nanjing University of Information Science & Technology Nanjing210044 China

In this paper, an efficient catalyst UiO-66-BTU/Fe2O3 was synthesized by using bisthiourea modified Zirconium-based Metal Organic Framework (Zr-MOF). The UiO-66-BTU/Fe2O3 system features outstanding Fenton-like activity that is 20.38 times and 11.52 times larger than Fe2O3 and conventional UiO-66-NH2/Fe2O3 system. It also exhibits good stability, broad pH range and recycle ability. Through comprehensive mechanistic investigations, we have ascribed the excellent catalytic performance of the UiO-66-BTU/Fe2O3 system to 1O2 and HO• as the reactive intermediates, cause Zr centers can make complexation with Fe to form dual centers. Meanwhile, the C=S on the bisthiourea can form Fe-S-C bonds with Fe2O3, reducing the redox potential of Fe(III)/Fe(II) and influencing the decomposing of H2O2, which indirectly regulate the interaction between Fe and Zr to accelerate electron transfer during the reaction. This work exhibits the design and understanding of the iron oxides incorporated in modified MOFs with excellent Fenton-like catalytic performance to remove phenoxy acid herbicides. © 2022, The Authors. All rights reserved.

关键词： Redox reactions

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Enhanced Formation of Iodinated Trihalomethanes in a Mixed Chlorine/Chloramine System and Attenuation by Uv-Activated Process

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SSRN 2022年

作者： Liu, Zhi Lin, Yi-Li Zhang, Tian-Yang Hu, Chen-Yan Zheng, Zheng-Xiong Tang, Yu-Lin Cao, Tong-Cheng Xu, Bin Gao, Nai-Yun State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze Water Environment Ministry of Education College of Environmental Science and Engineering Tongji University Shanghai200092 China Shanghai Institute of Pollution Control and Ecological Security Shanghai200092 China Department of Safety Health and Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung 824 Taiwan College of Environmental and Chemical Engineering Shanghai University of Electric Power Shanghai200090 China School of Chemical Science and Engineering Key Laboratory of Road and Traffic Engineering of Ministry of Education Tongji University Shanghai200092 China

Iodinated trihalomethanes (I-THMs) have drawn increasing concerns due to their higher toxicity than that of their chlorinated and brominated analogues. In this study, I-THM formation was firstly evaluated for three treatment scenarios - (i) chlorine alone, (ii) chloramine alone, and (iii) mixed chlorine/chloramine - in the presence and absence of UV irradiation for the iodide-containing humic acid solution or natural water. The results indicated that I-THM formation decreased in the order of mixed chlorination/chloramination > chloramination >> chlorination, which fitted the trend of toxicity evaluation results using Chinese hamster ovary cells. Conversely, total organic halide concentration decreased in the order of chlorination >> chloramination ≈ mixed chlorination/chloramination. Besides, I-THM formation can be efficiently controlled in a UV-activated mixed chlorine/chloramine system. Influencing factors including pH value and Br-/I- molar ratio were also systematically investigated in a mixed chlorine/chloramine system. Enhanced I-THM formation was observed with increasing pH value (6.0 to 8.0) and Br-/I- molar ratio (1 : 1 to 10 : 1). The results obtained in this study can provide new insights into the increasing risk of I-THM formation in a mixed chlorine/chloramine system and the effective control of I-THMs in the iodide-containing water using UV irradiation. © 2022, The Authors. All rights reserved.

关键词： Irradiation

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Ws2 Significantly Enhances the Degradation of Sulfachloropyridazine by Fe(Iii)/Persulfate

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SSRN 2022年

作者： He, Zedi Wang, Qiongfang Rao, Pinhua Dong, Lei Zhang, Min Zhang, Xin Gao, Naiyun Deng, Jing College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai201600 China State Key Laboratory of Pollution Control Reuse Tongji University Shanghai200092 China Co. LTD Shanghai200092 China College of Civil Engineering and Architecture Zhejiang University of Technology Hangzhou310014 China

The use of antibiotics has become an indispensable part of the production and life of human society. Among them, sulfonamide antibiotics widely used in humans and animals are considered to be one of the most crucial antibiotics. However, antibiotics are difficult to degrade naturally, leading to an accumulation in the environment and a potential hazard to human health. In this paper, WS 2 as a co-catalyst could reduce trace Fe(Ⅲ) to Fe(Ⅱ) which exhibited a great activating ability to PS through the exposed W(Ⅳ) active sites, and formed the Fe(Ⅲ)/Fe(Ⅱ) cycle to degrade sulfachloropyridazine (SCP) continuously. This paper systematically discussed the degradation of SCP under different conditions in the PS/WS 2 /Fe(Ⅲ) system, including the amount of WS 2 , Fe(Ⅱ) concentration, PS concentration, initial pH, natural organic matter (NOM) and common anions (NO 3 - , Cl - , HCO 3 - , HPO 4 2- and H 2 PO 4 - ). The experimental results showed that PS/WS 2 /Fe(Ⅲ) system possessed a strong degradation ability for SCP in a wide pH range. NO 3 - and Cl - could promote the degradation of SCP a little. HCO 3 - , HPO 4 2- and H 2 PO 4 - could significantly inhibit the degradation of SCP. The main types of free radicals that degraded SCP were explored. In addition, the stability and reusability of WS 2 were examined, and two possible degradation pathways of SCP were proposed. © 2022, The Authors. All rights reserved.

关键词： Tungsten compounds

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Enhanced Degradation of Bisphenol Af (Bpaf) by Visible Light Irradiated Zero Valent Iron Activated Persulfate System

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SSRN 2023年

作者： Qin, Cheng Qi, Yumeng Zheng, Qing Teng, Xiaolei Allam, Ahmed A. Rady, Ahmed Wang, Zunyao Qu, Ruijuan State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Jiangsu Nanjing210023 China School of Marine and Biological Engineering Yancheng Institute of Technology Yancheng224003 China Zoology Department Faculty ofScience Beni-Suef University Beni-Suef Egypt Department of Zoology College of Science King Saud University P.O. Box 2455 Riyadh11451 Saudi Arabia

In this study, we conducted a systematic study of bisphenol AF (BPAF) removal by visible light coupled zero valent iron activated persulfate (Vis/Fe0/PS) system. The results showed that the use of visible light significantly improved the removal efficiency of BPAF in Fe0/PS system. Under visible light irradiation, PS became excited, which favored its reaction with Fe2+ and the formation of hydrogen peroxide to produce more free radicals. Moreover, Fe3+ could form complex with mono-hydroxylated and mono-carboxylated intermediate of BPAF, and the photoinduced ligand-metal charge transfer (LMCT) process can effectively transfer the charge to the metal ion, accelerating the reduction of Fe3+ to Fe2+ to enhance the generation of free radicals. The generation of hydroxylation products of bisphenol AF in the Vis/Fe0/PS system is greatly increased compared to the Fe0/PS system. The Vis/Fe0/PS system demonstrated great application value that it reduced the economic cost of BPAF treatment, and sunlight irradiation was also effective in outdoor degradation test. Findings of this study provides new insights into the synergistic role of visible light in Fe0/PS systems and may advance the practical application of Vis/Fe0/PS system in water and wastewater treatment. © 2023, The Authors. All rights reserved.

关键词： Iron compounds

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