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Enhanced removal of bisphenol A by cyclodextrin in photocatalytic systems:Degradation intermediates and toxicity evaluation

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Chinese Chemical Letters 2020年第10期31卷 2623-2626页

作者： Yi Zhou Jie He Jian Lu yongdi liu 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 Laboratory for Industrial Wastewater Treatment East China University of Science and TechnologyShanghai 200237China

At present,the assessment of photooxidation system mainly focuses on the photodegradation efficie ncy of target pollutant,lacking of the toxicity assessment in the photocatalysis ***,photodecomposition of bisphenol A(BPA)was used to investigate the performance of several cyclodextrin modified ***,the comprehensive toxicity changes of BPA under different photocatalytic oxidation conditions were ***β-cyclodextrin(β-CD)modified photocatalyst,including titanium dioxide(CM-β-CD-TiO_(2)),carbon nitride(CM-β-CD-C_(3)N_(4))and cadmium sulfide(SH-β-CD-AM/CdS)exhibit high degradation rate and mineralization efficiency of *** highest total organic carbon(TOC)removal of BPA observed in the oxidation system of SH-β-CD-AM/CdS nano reactor(73.4%).The main oxidation intermediates in these systems were detected,and the comprehension toxicity of BPA and its oxidation intermediates in different system were compared by toxicity estimation software tool(T.E.S.T.)based on quantitative structure-activity relationship(QSAR)*** results show thatβ-CD can facilitate the photodecomposition of the target *** r,many oxidation intermediates with high compre hensive toxicity,eve n in the oxidation system with high B PA removal,can still be *** re,not only decomposition of target contaminant but also the comprehensive toxicity of oxidation intermediates should be regarded as index to evaluate a photocatalysis technology.

关键词： Cyclodextrin Bisphenol A Photocatalysis Toxicity Carbon nitride

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Resistance to salt stresses by aerobic granular sludge:sludge property and microbial community

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Frontiers of Environmental Science & Engineering 2024年第8期18卷 107-116页

作者： Xiao Wu Hui Li Meili Wang Tianying Zhang Jiawei Li yongdi liu Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission School of Chemistry and EnvironmentSouthwest Minzu UniversityChengdu 610041China Institute for Environmental Pollution and Health School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China School of Life Sciences Southwest UniversityChongqing 400715China 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 Institute of Qinghai-Tibetan Plateau Southwest Minzu UniversityChengdu 610041China

Saline wastewater is regarded as a challenge for wastewater treatment plants because high-salinity conditions negatively affect on traditional biological *** granular sludge(AGS)has gained attention as a promising technology for saline wastewater treatment because of its compact structure and the ability to withstand toxic ***,this study investigated the saltresistance performance,sludge properties and microbial community of AGS under low-salinity and high-salinity conditions,with the saline concentrations ranging from 0 to 50 g/*** results showed that AGS could withstand long-term saline stresses,and the maximum salinity reached 50 g/L within 113 *** salinities of 10,30,and 50 g/L,the chemical oxygen demand(COD)removal efficiencies were 90.3%,88.0%and 78.0%,*** also its maintained strength and aggregation at salinities of 10 and 30 g/*** of extracellular polymeric substances(EPS)by non-halophilic bacteria that enhanced sludge *** compact structure that ensured the microorganisms bioactivity helped to remove organic matters under salinities of 10 and 30 g/*** a salinity of 50 g/L,moderately halophilic bacteria,including Salinicola,Thioclava,Idiomarina and Albirhodobacter,prevailed in the *** dominant microbial communities shifted to moderately halophilic bacteria,which could maintain aerobic granular stabilization and remove organic matters under 50 g/L *** results in this study provide a further explanation for the long-term operation of AGS for treating saline wastewater at different *** is hoped that this work could bring some clues for the mystery of salt-resistance mechanisms.

关键词： Aerobic granular sludge Long-term saline stresses Performance Sludge property Microbial community

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Preliminary study of groundwater denitrification using a composite membrane bioreactor

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Frontiers of Environmental Science & Engineering 2011年第4期5卷 604-609页

作者： Lihui ZHANG Guomin CAO Yulei FEI Hong DING Mei SHENG yongdi liu Research Institute of Environmental Engineering East China University of Science and TechnologyShanghai 200237China

A composite membrane bioreactor(CMBR)integrating the immobilized cell technique and the membrane separation technology was developed for groundwater *** CMBR had two well mixed compartments with one filled with the nitratecontaining influent and the other with a dilute ethanol solution;the compartments were separated by the composite membrane consisting of a microporous membrane facing the influent and an immobilized cell membrane facing the ethanol *** and ethanol molecules diffused from the respective compartments into the immobilized cell membrane where nitrate was reduced to gaseous nitrogen by the denitrifying bacteria present there with ethanol as the carbon *** microporous membrane was attached to one side of the immobilized cell membrane for retention of the disaggregated *** to the single dose of external ethanol,the twodose supplementation produced better treatment results as evidenced by the lower concentrations of NO_(3)^(-)-N and ethanol(as measured by total organic carbon)of the *** batch treatment in CMBR removed most of the nitrate in the influent and attained a stable denitrification rate of 0.1 g·m^(-2)·h^(-1)for most of the 96-h cycles during the 30-cycle *** effluent was essentially free of ethanol and nitrite nitrogen.

关键词： groundwater nitrate denitrification composite membrane bioreactor(CMBR) immobilized cell membrane

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Abatement of sulfide generation in sewage by glutaraldehyde supplementation and the impact on the activated sludge accordingly

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Frontiers of Environmental Science & Engineering 2015年第2期9卷 365-370页

作者： Lehua ZHANG Jingxing MA Yinchen JIN Haiqin ZHANG yongdi liu Lankun Cai State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental Engineering East China University of Science and Technology Shanghai 200237 China Department of Water Pollution Control Universite Libre de Bruxelles B-1050 Brussels Belgium

Hydrogen sulfide emission in sewer systems is associated with toxicity, corrosion, odour nuisance and high costs treatment. In this study, a novel method to inhibit sulfide generation from sewage by means of glutaraldehyde supplementation has been suggested and evaluated under anaerobic conditions. Different concentra- tions of glutaraldehyde at 10, 15, 20, 30 and 40mg.L1 have been investigated. Besides, the possible impacts of glutaraldehyde supplementation on an activated sludge system and an appraisal of the economic aspects are presented as well. As observed from the experimental results, a dosage of 20 mg. L-1 glutaraldehyde resulted in a significant decrease of the sulfide production by 70%-80% in the simulated sewage. Moreover, the impacts of additional glutaraldehyde at 20mg·L^-1 on activated sludge, in terms of chemical oxygen demand removal and oxygen uptake rates, were negligible. From an economical point of view, the cost of the commercial glutaraldehyde products required in the operation, which was calculated on the basis of activated sulfide removal avoidance, was around ε3.7-4.6 S·kg^-1. Therefore it is suggested that glutaraldehyde supplementation is a feasible technique to abate the sulfide problems in sewer systems. Yet further research is required to elucidate the optimum ＂booster＂ dosage and the dosing frequency in situ accordingly.

关键词： corrosion glutaraldehyde sulfate-reducingbacteria sulfide urban sewage

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A carbon-rich g-C_(3)N_(4) with promoted charge separation for highly efficient photocatalytic degradation of amoxicillin

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Chinese Chemical Letters 2021年第9期32卷 2787-2791页

作者： Dan Huang Xianbo Sun yongdi liu Haodong Ji Wen liu Chong-Chen Wang Weiyu Ma Zhengqing Cai National Engineering Laboratory for High-concentration Refractory Organic Wastewater Treatment Technologies East China University of Science and TechnologyShanghai 200237China The Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing 100044China

A novel carbon-rich g-C_(3)N_(4) nanosheets with large surface area was prepared by facile thermal polymerization method using urea and 1,3,*** of carbon-rich functional groups were introduced into the surface layers of g-C_(3)N_(4),which constructed the built-in electric field(BIEF)and resulted in improved charge separation;therefore,the carbon-rich g-C_(3)N_(4) displayed superior photocatalytic activity for amoxicillin degradation under solar *** contaminant degradation mechanism was proposed based on radical quenching experiments,intermediates analysis and density functional theory(DFT)***,the reusing experiments showed the high stability of the material,and the amoxicillin degradation under various water matrix parameters indicated its high applicability on pollutants treatment,all of which demonstrated its high engineering application potentials.

关键词： Carbon-rich g-C_(3)N_(4) Photocatalysis Built-in electron field Charge separation

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Fluorinated inverse opal carbon nitride combined with vanadium pentoxide as a Z-scheme photocatalyst with enhanced photocatalytic activity

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Chinese Chemical Letters 2022年第8期33卷 3797-3801页

作者： Ningkai Ding Bin Chen Liang Zhou Lingzhi Wang yongdi liu Jinlong Zhang Juying Lei 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 Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Molecular EngineeringEast 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

In this work,Z-scheme V_(2)O_(5) loaded fluorinated inverse opal carbon nitride(IO F-CN/V_(2)O_(5)) was synthesized as a product of ternary collaborative modification with heterostructure construction,element doping and inverse opal *** catalyst presented the highest photocatalytic activity and rate constant for degradation of typical organic pollutants Rhodamine B(RhB)and was also used for the efficient removal of antibiotics,represented by norfloxacin(NOR),sulfadiazine(SD)and levofloxacin(LVX).Characterizations confirmed its increased specific surface area,narrowed bandgap,and enhanced visible light utilization *** mechanism study including band structure study and electron paramagnetic resonance(EPR)proved the successful construction of Z-scheme heterojunction,which improved photogenerated charge carrier migration and provide sufficient free radicals for the degradation *** combination of different modifications contributed to the synergetic improvement of removal efficiency towards different organic pollutants.

关键词： Carbon nitride Inverse opal structure Vanadium pentoxide Fluorinate Organic pollutants degradation

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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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Synergistic effects of chemical additives and mature compost on reducing H_2S emission during kitchen waste composting

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Journal of Environmental Sciences 2024年第5期139卷 84-92页

作者： yongdi liu Haihou Wang Hao Zhang Yueyue Tao Rui Chen Sheng Hang Xiaoyan Ding Meidi Cheng Guochun Ding Yuquan Wei Ting Xu Ji Li College of Resources and Environmental Science Beijing Key Laboratory of Biodiversity and Organic FarmingChina Agricultural UniversityBeijing 100193China Organic Recycling Institute(Suzhou)of China Agricultural University Wuzhong DistrictSuzhou 215128China Suzhou Academy of Agricultural Sciences Institute of Agricultural Sciences in Taihu Lake DistrictSuzhou 215155China Technical Centre for Soil Agriculture and Rural Ecology and EnvironmentMinistry of Ecology and EnvironmentBeijing 100012China College of Chemistry and Chemical Engineering Yantai UniversityYantai 264005China

Additives could improve composting performance and reduce gaseous emission,but few studies have explored the synergistic of additives on H_(2)S emission and compost *** research aims to make an investigation about the effects of chemical additives and mature compost on H_(2)S emission and compost maturity of kitchen waste *** results showed that additives increased the germination index value and H_(2)S emission reduction over 15 days and the treatment with both chemical additives and mature compost achieved highest germination index value and H_(2)S emission reduction(85%).Except for the treatment with only chemical additives,the total sulfur content increased during the kitchen waste *** proportion of effective sulfur was higher with the addition of chemical additives,compared with other *** relative abundance of H_(2)S-formation bacterial(Desulfovibrio)was reduced and the relative abundance of bacterial(Pseudomonas and Paracoccus),which could convert sulfur-containing substances and H_(2)S to sulfate was improved with *** the composting process with both chemical additives and mature compost,the relative abundance of Desulfovibrio was lowest,while the relative abundance of Pseudomonas and Paracoccus was *** together,the chemical additives and mature compost achieved H_(2)S emission reduction by regulating the dynamics of microbial community.

关键词： Kitchen waste composting Sulfur conversion Chemical additives Mature compost Microbial community

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石墨烯介导铁还原菌耦合针铁矿体系降解四氯化碳

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华东理工大学学报（自然科学版） 2024年第1期50卷 46-53页

作者：刘乔丹李辉刘勇弟华东理工大学资源与环境工程学院上海200237 上海大学环境与化学工程学院上海200444

研究了氧化石墨烯(GO)、还原氧化石墨烯(rGO)及双氧水改性还原氧化石墨烯(rGO(H__(2)O_(2)))3种石墨烯介导铁还原菌耦合针铁矿体系的铁还原过程以及该体系强化降解四氯化碳的机理。结果表明:不同石墨烯均能有效促进铁还原菌还原针铁矿... 详细信息

研究了氧化石墨烯(GO)、还原氧化石墨烯(rGO)及双氧水改性还原氧化石墨烯(rGO(H__(2)O_(2)))3种石墨烯介导铁还原菌耦合针铁矿体系的铁还原过程以及该体系强化降解四氯化碳的机理。结果表明:不同石墨烯均能有效促进铁还原菌还原针铁矿和铁还原菌耦合针铁矿体系对四氯化碳的降解,其中rGO的促进作用最为显著,其机理主要与石墨烯表面的醌类等基团具有更强的电子传递能力、吸附态Fe(Ⅱ)浓度高及能生成还原能力强的次生铁矿蓝铁矿等因素有关。

关键词：针铁矿石墨烯铁还原菌电子穿梭体还原脱氯

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盐酸羟胺和酒石酸强化Fe^2＋/Na2S2O8体系降解双酚A

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环境工程学报 2018年第10期12卷 2732-2740页

作者：顾雍孙贤波刘勇弟华东理工大学资源与环境工程学院、国家环境保护化工过程环境风险评价与控制重点实验室上海200237

Fe^(2+)/Na_2S_2O_8(persulfate,PS)体系中存在Fe^(2+)易发生沉淀且Fe^(3+)无法还原的问题,以典型的持久性有机污染物双酚A(bisphenol A,BPA)为研究对象,分别考察络合剂酒石酸(tartaric acid,TA)和还原剂盐酸羟胺(hydroxylamine,HA)强化Fe^(2+)/PS体系对双酚A降解过程的影响。在Fe^(2+)/TA/PS体系、Fe^(2+)/HA/PS体系及Fe^(2+)/TA/HA/PS体系中分别考察了盐酸羟胺投加量、酒石酸投加量、体系pH作用范围等因素的影响,同时对氧化作用机理加以分析。研究表明:酒石酸和盐酸羟胺均能提高双酚A在Fe^(2+)/PS体系中的去除率,且均具有最优值;络合剂酒石酸起到长期促进作用,而还原剂盐酸羟胺起到短期促进作用。探针实验表明络合剂和还原剂共同强化的体系中·OH和SO_(4·)^-仍然是主要的氧化物种。当PS投加量均为2.64 mmol·L-1时,30 min内Fe^(2+)/TA/HA/PS体系中SO_(4·)^-的生成量为11.3μmol·L-1,而Fe^(2+)/PS体系中SO_(4·)^-的生成量为1.4μmol·L-1,表明体系通过加速了自由基生成速率从而加快了双酚A的降解。研究结果表明Fe^(2+)/TA/HA/PS体系在中性条件下实现了对双酚A的强化降解,显著优于Fe^(2+)/PS体系。

关键词：双酚A 酒石酸盐酸羟胺硫酸根自由基

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