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Efficient photocatalytic NADH regeneration with Rh-loaded Z-scheme mediator-free system

Chinese chemical Letters 2024年第2期35卷 496-500页

作者： Yi Zhou Yiling He Ming Gao Ningkai Ding Juying Lei Yanbo Zhou State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and TechnologyShanghai 200237China Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and TechnologyShanghai 200237China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Nicotinamide adenine dinucleotide(NADH)regeneration is necessary for the sustainable application of enzymatic *** Rh-based complex[Cp^(*)Rh(bpy)(H)]+has been widely used as an important mediator in NADH regeneration systems,but it is limited by complexity and high ***,a Z-scheme was constructed by loading Rh onto carbon nitride nanosheets/carbon nitride quantum dots(CN-CNQD).The resultant catalyst achieved a high yield of NADH in a mediator-free(M-free)system of 0.283 mmol L^(−1) g^(−1) min^(−1),which is 5.29 times that of pure *** enzyme introduction experiments confirmed that the enzyme active product 1,4-NADH could reach 34.21%selectivity in the M-free *** research revealed that the heterojunction between CNs and CNQDs improved the NADH regeneration activity in the traditional M-involved system,while Rh loading was proved to optimize the yield and selectivity of 1,4-NADH in M-free *** immobilized Rh shows more competitiveness than[Cp^(*)Rh(bpy)(H)]^(+).This study contributes to the construction of an M-free system for further application in greener,lower-cost enzymatic processes.

关键词： Photocatalysis NADH regeneration Mediator-free Carbon nitride Z-scheme

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Mechanistic Insights into Surfactant in Enhanced Reductive Degradation of Perchlorinated Organic Contaminants in Fenton System

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SSRN 2023年

作者： Xu, Zhiqiang Cai, Lankun Yang, Rumin Zhou, Zhengyuan Zeng, Guilu Lyu, Shuguang State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process China State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai200237 China

The mechanism of surfactants in surfactant-in situ chemical oxidation (S-ISCO) coupled process for enhanced perchlorinated organic contaminants degradation was reported. Carbon tetrachloride (CT) removal was greatly improved from 6.2% to 97.2% and from 8.2% to 91.8% with the presence of Tween-80 (TW-80, 1.0 g L-1) or sodium dodecyl sulfate (SDS, 3.0 g L-1) in Fenton system, respectively. Further analyses based on free radical quenching studies and electron paramagnetic resonance (EPR) tests suggested that surfactant radicals were responsible for CT removal with TW-80 presence whereas superoxide radicals (O2−•) and carbon dioxide radicals (CO2−•) were the major radicals with SDS presence. The dechlorination of CT reached 82.1% and 75.3% with TW-80 or SDS presence, respectively, indicating that most of the degraded CT could be completely mineralized. The possible degradation pathways of CT were proposed based on the detected intermediates. Degradation of various single or mixed chlorinated hydrocarbon contaminants with TW-80 or SDS presence in Fenton system was also performed. Further, the influence of various solution matrixes on CT degradation and the recovered surfactant solution after reaction on CT solubilization and removal were assessed. In summary, this study provides theoretical support for groundwater remediation with perchlorinated contaminants when containing surfactants. © 2023, The Authors. All rights reserved.

关键词： Solubility

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Adsorptive removal of PPCPs from aqueous solution using carbon-based composites:A review

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Chinese chemical Letters 2022年第8期33卷 3585-3593页

作者： Tong Wang Jie He Jian Lu Yi Zhou Zhaohui Wang Yanbo Zhou State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and TechnologyShanghai 200237China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration School of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China

Far-ranging and improper uses of pharmaceuticals and personal care products(PPCPs)over the last few decades have led to severe water contamination that imposes serious effects on human beings and the ecological ***,there is an increasing demand for a highly-efficient and environmentally friendly technology for the removal of PPCPs from aqueous *** technology is an appropriate technology to solve this ***-based composites,ranging from modified activated carbon to functionalized biochar,show great potential for this *** review hence elaborates on the environmental occurrences and risks of PPCPs and summarizes the recent progress in removing PPCPs from water using carbon-based *** pore structure,relatively large specific surface area(SSA),abundant surface functional groups,highly aromatic structures and the extra excellent characteristics of the cooperative materials contribute to their outstanding adsorption ***,the biochar-clay material is cost effective and more efficient compared to traditional activated carbon regarding the adsorption of *** the emerging adsorbents,graphene and carbon nanotubes composites show superior adsorption *** adsorption mechanisms,such as electrostatic interactions,hydrogen bonding,and pore filling,are discussed in details.

关键词： Adsorption Carbon-based composites PPCPs Adsorbent Water treatment

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Industrial fluoride emissions and their spatial characteristics in the Nansi Lake Basin, Eastern China

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environmental Science and Pollution Research 2024年第18期31卷 27273-27285页

作者： Liu, Dandan Li, Xueying Zhang, Yue Bai, Lu Shi, Huijian Qiao, Qi Li, Tianran Xu, Wen Zhou, Xiaoyun Wang, Hejing State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China Key Laboratory of Eco-Industry of the Ministry of Environmental Protection Chinese Research Academy of Environmental Sciences Beijing100012 China Technical Centre for Soil Agriculture and Rural Ecology and Environment Ministry of Ecology and Environment Beijing100012 China Center for Soil Pollution Control of Shandong Jinan250000 China

Excessive fluoride emissions threaten ecological stability and human health. Previous studies have noted that industrial sources could be significant. However, quantifying industrial fluoride emissions has not been yet reported. In this study, both bottom-up and top-down approaches were used to estimate the fluoride emissions in the Nansi Lake Basin. Global and local spatial autocorrelation were adopted to reveal the spatial agglomeration effects. The fluoride emissions calculated by the bottom-up approach were larger than those calculated by the top-down method. The highest fluoride input mainly occurred in Zoucheng and Mudan. The highest fluoride emissions mainly occurred in Zoucheng and Rencheng using the bottom-up approach. The highest fluoride emissions mainly occurred in Zoucheng and Yanzhou using the top-down approach. Mining and washing of bituminous coal and anthracite (BAW) was the most significant source of fluoride input and emissions. A significant spatial agglomeration effect of fluoride emissions was found. These findings could provide a method for accurate industrial fluoride emission estimation, complement the critical data on the fluoride emissions of main industrial sectors, and provide a scientific basis for tracing fluoride sources. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Bituminous coal

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FeS as excellent co-activator driving nano calcium peroxide oxidation for contaminants degradation: Performance and mechanisms

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Chemosphere 2023年第1期338卷 139559页

作者： Liu, Yulong Sheng, Xianxian Habib, Mudassir Wang, Peng Lu, Zhanpeng Dong, Jiaqi Sui, Qian Lyu, Shuguang State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai200237 China

In this study, ferrous sulfide (FeS) was introduced to nano calcium peroxide (nCP)/Fe(III) system to facilitate the generation of Fe(II), more than 90% of naphthalene (NAP) could be removed at a wide pH range of 3–9. As a heterogeneous reductant, FeS could mitigate competitive reactions with reactive oxygen species (ROS), which favored the NAP degradation. As evidenced by scavenging experiments, HO• was the major ROS contributing to NAP degradation. The role of sulfur species (S2−, SO32−, and S2O32−) in nCP/Fe(III) system was investigated with S2O32− showing the preferable reactivity in Fe(III) reduction. In addition, the surface-bound HO• and surface Fe(II) were detected and the role of them on NAP degradation was revealed and concluded that both dissolved and surface Fe(II) contributed to NAP degradation, whereas surface-bound HO• was not superior to solution HO• in degrading NAP. Furthermore, nCP/Fe(III)/FeS system showed high feasibility to different solution matrixes and various types of water as well as the broad-spectrum reactivity to other toxic organic pollutants, exhibiting promise for practical application to remediate complex contaminants. © 2023 Elsevier Ltd

关键词： Sulfur compounds

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Transport, transformation, and ecological impacts of brominated flame retardants in soils: A comprehensive review

Environmental Chemistry and Ecotoxicology

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environmental Chemistry and Ecotoxicology 2025年 7卷 1142-1157页

作者： Jia Zhang Dan Li Ying Yuan Kunlong Hui Wenbing Tan State Key Laboratory of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental Sciences Beijing 100012 China

Brominated flame retardants (BFRs) have become significant contaminants of emerging concern (CECs), resulting in detrimental effects on soil health, human health, and ecosystem sustainability. Their environmental impacts have spurred extensive research into environmental chemistry and ecotoxicology. Despite the widespread detection of both BFRs and Novel Brominated Flame Retardants (NBFRs) in soils, there are few assessments of the environmental behavior and fate of the BFRs. Therefore, this review comprehensively identifies the sources, distribution, transport, transformation, ecotoxicological effects, and remediation strategies of BFRs in soils. Principal findings indicate that adsorption-desorption, mostly influenced by soil organic matter, controls the mobility and transformation of BFRs. Photolysis dominates surface soils, while aerobic and anaerobic biodegradation predominate in subsurface layers. The main factors influencing the bioavailability of BFRs are shed light on in this review. These factors such as the physicochemical properties of BFRs, soil characteristics, and combined pollution are specifically discussed. Moreover, the development, physiological, and biochemical responses of soil organisms to exposure to the BFRs are summarized. Single strategies for addressing BFRs have certain limitations. Urgent actions are needed to focus on environmental behavior and remediation strategies under the “One Health” framework to enrich research gap areas of BFRs, NBFRs, and transformation products.

关键词： Brominated flame retardants Soil Transport Transformation Bioavailability Toxicity

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Contamination characteristics and dietary intake risk of brominated flame retardants in fishes around a typical e-waste dismantling site in Southern China

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Science of the Total Environment 2024年 945卷 173991页

作者： Zhou, Shanqi Qiao, Zhihua Ling, Siyuan Fu, Mengru Han, Yanna Peng, Cheng Zhang, Wei Lei, Juying State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resource and Environmental Engineering East China University of Science and Technology Shanghai200237 China State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants Shanghai Academy of Environmental Sciences Shanghai200233 China

Polybrominated diphenyl ethers (PBDEs) and their substitutes, novel brominated flame retardants (NBFRs), are ubiquitously present in the aquatic environment of electronic waste (e-waste) dismantling region, leading to their inevitable absorption and accumulation by aquatic organisms, which can be transferred to human via directly aquatic product consumption or through food chain, thereby posing potential health risks. This study focused on fish samples from Guiyu and its surrounding areas, and found the total PBDEs concentrations were 24–7400 ng/g lw (mean: 1800 ng/g lw) and the total NBFRs concentrations were 14 to 2300 ng/g lw (mean: 310 ng/g lw). Significant positive correlations were found among PBDE congeners, among different NBFRs, and between NBFRs and commercial PBDEs that they replace. ΣPBDEs and ΣNBFRs in the intestine were 620–350,000 and 91–81,000 ng/g lw (mean: 83000 and 12,000 ng/g lw, respectively), significantly exceeding those in the gills, where ΣPBDEs and ΣNBFRs were 14–37,000 and 39–45,000 ng/g lw (mean: 9200 and 2400 ng/g lw, respectively). The ΣPBDEs and ΣNBFRs showed no non-carcinogenic risks to the target population through dietary intake. Despite the significantly higher daily intake of decabromodiphenyl ethane (DBDPE) compared to decabromodiphenyl ether (BDE209), the non-carcinogenic risk associated with BDE209 remained higher than that of DBDPE. Our findings can assist researchers in understanding the presence of BFRs in aquatic organisms, inhabiting e-waste dismantling areas, and in evaluating the associated health risks posed to humans through dietary exposure. © 2024 Elsevier B.V.

关键词： Fish

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Insight into the Compound risk of Decabromodiphenyl Ethane and Cadmium to Soil Health in Agroecosystems: From Soil Quality to Plant Health

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SSRN 2025年

作者： Han, Yanna Zhao, Xuan Qiao, Zhihua Liang, Weiyu Liu, Tianzi Peng, Cheng Zhang, Wei State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resource and Environmental Engineering East China University of Science and Technology Shanghai200237 China

Soil serves as the habitat for numerous organisms and is increasingly threatened from contamination of novel brominated flame retardant (NBFRs) and heavy metals (HMs), which have emerged as global problems in terrestrial ecosystems. Focusing on Deca-bromodiphenyl ethane (DBDPE) and cadmium (Cd) as the targets, we constructed a soil-lettuce-earthworm microcosm to explore the effects of co-pollution on properties, microbial communities and elemental cycling genes in rhizosphere soils. Co-pollution initially affected soil properties and Cd fractionation, increasing ecological risks. In turn, the normal elemental cycle was also disturbed. Notably, C cycling was inhibited in soil, as evidenced by decreased sucrase activity, cation exchange capacity, and C cycling genes, leading to a reduction in bioavailable C sources. Meanwhile, soil N-cycling genes and denitrification processes were significantly inhibited, while nitrification was enhanced. In addition, co-pollution disrupted the structure of soil microbiota, reducing community cooperation and stability. Ultimately, the lack of nutrient uptake by soil organisms interfered with the normal growth of plants, exhibiting the compound risks caused by both DBDPE and Cd in soil. This study extended the current knowledge of ecological and health risks caused by NBFRs and HMs co-pollution in soil-plant-animal agroecosystems. © 2025, The Authors. All rights reserved.

关键词： Soil pollution

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多硫化物修饰nZVI@BC对污染土壤中铬的稳定化:铬的生物可用性和稳定机制

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Journal of Central South University 2024年第4期31卷 1217-1232页

作者：陈劲松王鑫晏鑫尧王晓科马慧蒲生彦 State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil&Water Pollution Chengdu University of TechnologyChengdu 610059China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China

土壤中铬(Cr)污染是最严重的环境问题之一,对人类健康构成了重大威胁。本研究探讨了多硫化物修饰的nZVI@BC(PS-nZVI@BC)对铬污染土壤的稳定化机制以及铬的生物可用性。经过30天的处理后,添加PS-nZVI@BC能够降低土壤中92.0%的可浸出Cr(VI... 详细信息

土壤中铬(Cr)污染是最严重的环境问题之一,对人类健康构成了重大威胁。本研究探讨了多硫化物修饰的nZVI@BC(PS-nZVI@BC)对铬污染土壤的稳定化机制以及铬的生物可用性。经过30天的处理后,添加PS-nZVI@BC能够降低土壤中92.0%的可浸出Cr(VI)。根据序贯萃取分析,添加PS-nZVI@BC后,土壤中的可交换铬从20.8%急剧下降至4.0%,大部分转化为铁锰氧化物和有机物结合态。稳定机制包括静电吸附、氧化还原反应、表面络合和沉淀。此外,PS-nZVI@BC能有效改善铬污染土壤的肥力,降低土壤中的铬对玉米幼苗的毒性。这些结果表明采用PS-nZVI@BC对受铬污染的土壤进行修复具有巨大的潜力。

关键词：铬污染土壤生物炭多硫化物修饰nZVI 土壤修复土壤肥力

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Higher N_(2)O production in sequencing batch reactors compared to continuous stirred tank reactors:effect of feast-famine cycles

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Frontiers of environmental Science & Engineering 2023年第4期17卷 143-154页

作者： Xinjie Yan Xunyu Shen Jipeng Wang Jinlong Zhuang Yu Wang Jinchi Yao Hong Liu Yongdi Liu James P.Shapleigh Wei Li National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and TechnologyShanghai 200237China 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 School of Environmental and Safety Engineering Changzhou UniversityChangzhou 213164China Shanghai Huayi Group Co.Ltd. Shanghai 201108China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200237China Department of Microbiology Cornell UniversityIthacaNY 14850USA

Nitrous oxide(N_(2)O)is a potent greenhouse gas that can be emitted during the biological treatment of *** this study,a comparison of the long-term performance characteristics and N_(2)O production of sequencing batch reactors(SBR)and continuous stirred tank reactors(CSTR)during nitrite-based denitrification was *** was found that both reactors had NO_(2)^(-)-N removal efficiencies over 99.9%,but the N_(2)O-N emissions from the SBR reached~2.3%of the removal nitrite-N load,while in the CSTR it never exceeded 0.1%.High frequency sampling during one operation cycle of the SBR demonstrated that the N_(2)O accumulation ratio was~0.1%during the feast period,increased to~1.9%in the first five hours of the famine period,and then gradually reached~2.3%at the end of *** experiments showed that limiting extracellular electron donor is required for N_(2)O accumulation in cells from the SBR-famine period and that cells from the CSTR do not accumulate N_(2)O when either nitrite or carbon is *** notable difference in the two reactor communities was the high level of accumulation of intracellular granules,most likely polyhydroxybutyrate(PHB),in cells during the feast period in the *** assembly and binning found that one genome(PRO1),which is a Thauera,accounted for over half the metagenomic reads in both *** shifts in gene regulation nor community composition explained the observed differences in reactor performance suggesting some post-transcriptional regulation obligatorily linked to antecedent conditions underly increased N_(2)O production in the SBR.

关键词： Denitrifying N_(2)O mitigation SBR CSTR Meta-omics PHB

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