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Facilitated Prediction of Micropollutant Degradation via UV-AOPs in Various Waters by Combining Model Simulation and Portable Measurement

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Engineering 2024年第6期37卷 87-95页

作者： Yanyan Huang Mengkai Li Zhe Sun Wentao Li James R.Bolton Zhimin Qiang 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 Department of Civil and environmental Engineering University of AlbertaEdmontonAB T6G 1H9Canada state key laboratory of environmental aquatic chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

The degradation of micropollutants in water via ultraviolet(UV)-based advanced oxidation processes(AOPs)is strongly dependent on the water *** reactive radicals(RRs)formed in UV-AOPs have different reaction selectivities toward water matrices and degradation efficiencies for target ***,process selection and optimization are *** study developed a facilitated prediction method for the photon fluence-based rate constant for micropollutant degradation(K′_(p,MP))in various UV-AOPs by combining model simulation with portable *** methods for measuring the scavenging capacities of the principal RRs(RRSCs)involved in UV-AOPs(i.e.,HO^(·),SO_(4)^(·-),and Cl^(·))using a mini-fluidic photoreaction system were *** simulation models consisted of photochemical,quantitative structure–activity relationship,and radical concentration steady-state approximation *** RRSCs were determined in eight test waters,and a higher RRSC was found to be associated with a more complex water ***,by taking sulfamethazine,caffeine,and carbamazepine as model micropollutants,the k′_(p,MP) values in various UV-AOPs were predicted and further verified experimentally.A lower k′_(p,MP) was found to be associated with a higher RRSC for a stronger RR competition;for example,k′_(p,MP) values of 130.9 and 332.5 m^(2) einstein^(–1),respectively,were obtained for carbamazepine degradation by UV/H_(2)O_(2) in the raw water(RRSC=9.47×10^(4) s^(-1))and sand-filtered effluent(RRSC=2.87×10^(4) s^(-1))of a drinking water treatment *** developed method facilitates process selection and optimization for UV-AOPs,which is essential for increasing the efficiency and cost-effectiveness of water treatment.

关键词： UV-AOPs Micropollutant degradation Reactive radicals Water matrix Model simulation

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Effects of Bisphenol A and Its Substitute, Bisphenol F, on the Gut Microbiota in Mice

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Biomedical and environmental Sciences 2024年第1期37卷 19-30页

作者： MENG Li Ying TAO Wen Fu LI Jing ZHU Min ZHONG De Bin ZHOU Jing QIN Xue WEI Rong Guo Department of Clinical laboratory The First Affiliated Hospital of Guangxi Medical UniversityNanning 530021GuangxiChina Department of Clinical laboratory The Fifth Affiliated Hospital of Guangxi Medical UniversityNanning 530021GuangxiChina Jiangsu key laboratory of environmental Engineering Jiangsu Academy of Environmental SciencesNanjing 210000JiangsuChina

Objective The aim of this study was to assess the impact of bisphenol A(BPA)and its substitute,bisphenol F(BPF),on the colonic fecal community structure and function of *** We exposed 6–8-week-old male C57BL/6 mice to 5 mg/(kg∙day)and 50μg/(kg∙day)of BPA or BPF for 14 *** samples from the colon were analyzed using 16S rRNA *** Gut microbiome community richness and diversity,species composition,and function were significantly altered in mice exposed to BPA or *** change was characterized by elevated levels of Ruminococcaceae UCG-010 and Oscillibacter and decreased levels of Prevotella 9 and ***,pathways related to carbohydrate and amino acid metabolism showed substantial *** Mice exposed to different BP analogs exhibited distinct gut bacterial community richness,composition,and related metabolic *** the essential role of gut bacteria in maintaining intestinal homeostasis,our study highlights the intestinal toxicity of BPs in vertebrates.

关键词： Bisphenol A(BPA) Bisphenol F(BPF) 16S rRNA Microbiota

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模型模拟结合便携测量预测紫外高级氧化工艺对水中微污染物的去除（英文）

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Engineering 2024年第6期 87-95页

作者：黄妍妍李梦凯孙喆李文涛 James R.Bolton 强志民 key laboratory of Drinking Water Science and Technology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Civil and environmental Engineering University of Alberta state key laboratory of environmental aquatic chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences

The degradation of micropollutants in water via ultraviolet（UV）-based advanced oxidation processes（AOPs） is strongly dependent on the water matrix. Various reactive radicals（RRs） formed in UV-AOPs have different reaction selectivities toward water matrices and degradation efficiencies for target micropollutants. Hence, process selection and optimization are crucial. This study developed a facilitated prediction method for the photon fluence-based rate constant for micropollutant degradation(k'p,MP) in various UV-AOPs by combining model simulation with portable measurement. Portable methods for measuring the scavenging capacities of the principal RRs（RRSCs） involved in UV-AOPs(i.e., HO·, SO4·-, and Cl·) using a mini-fluidic photoreaction system were proposed. The simulation models consisted of photochemical, quantitative structure–activity relationship, and radical concentration steady-state approximation models. The RRSCs were determined in eight test waters, and a higher RRSC was found to be associated with a more complex water matrix. Then, by taking sulfamethazine,caffeine, and carbamazepine as model micropollutants, the k'p,MPvalues in various UV-AOPs were predicted and further verified experimentally. A lower k'p,MPwas found to be associated with a higher RRSC for a stronger RR competition; for example, k'p,MPvalues of 130.9 and 332.5 ***–1, respectively, were obtained for carbamazepine degradation by UV/H2O2in the raw water(RRSC = 9.47 × 10～4s-1) and sand-filtered effluent(RRSC = 2.87 × 10～4s-1) of a drinking water treatment plant. The developed method facilitates process selection and optimization for UV-AOPs, which is essential for increasing the efficiency and cost-effectiveness of water treatment.

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Comparison of clinical features and outcomes of proliferative,fibrotic,and mixed subtypes of IgG4-related disease:A retrospective cohort study

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Chinese Medical Journal 2024年第3期137卷 303-311页

作者： Linyi Peng Xinlu Zhang Jiaxin Zhou Jieqiong Li Zheng Liu Hui Lu Yu Peng Yunyun Fei Yan Zhao Xiaofeng Zeng Wen Zhang Department of Rheumatology and Clinical Immunology Peking Union Medical College HospitalNational Clinical Research Center for Dermatologic and Immunologic DiseasesState Key Laboratory of Complex Severe and Rare DiseasesThe Ministry of Education Key LaboratoryBeijing 100730China Institute of Clinical Medicine Peking Union Medical College Hospital(PUMCH)Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China

Background:Immunoglobulin G4-related disease(IgG4-RD)is a recently recognized immune-mediated disorder that can affect almost any organ in the human ***4-RD can be categorized into proliferative and fibrotic subtypes based on patients’clinicopathological *** study aimed to compare the clinical manifestations,laboratory findings,and treatment outcomes of IgG4-RD among different ***:We prospectively enrolled 622 patients with newly diagnosed IgG4-RD at Peking Union Medical College Hospital from March 2011 to August *** patients were divided into three groups according to their clinicopathological characteristics:proliferative,fibrotic,and mixed *** compared demographic features,clinical manifestations,organ involvement,laboratory tests,and treatment agents across three *** then assessed the differences in treatment outcomes among 448 patients receiving glucocorticoids alone or in combination with ***,risk factors of relapse were revealed by applying the univariate and multivariate Cox regression ***:We classified the 622 patients into three groups consisting of 470 proliferative patients,55 fibrotic patients,and 97 mixed patients,*** found that gender distribution,age,disease duration,and frequency of allergy history were significantly different among *** terms of organ involvement,submandibular and lacrimal glands were frequently involved in the proliferative subtype,while retroperitoneum was the most commonly involved site in both fibrotic subtype and mixed *** comparison of laboratory tests revealed that eosinophils(P=0.010),total IgE(P=0.006),high-sensitivity C-reactive protein(P<0.001),erythrocyte sedimentation rate(P<0.001),complement C4(P<0.001),IgG(P=0.001),IgG1(P<0.001),IgG4(P<0.001),and IgA(P<0.001),at baseline were significantly different among three *** with proliferative and mixed subtypes,the fibrotic subtype showed the

关键词： IgG4-related disease Proliferative subtype Fibrotic subtype Clinical features Treatment outcome

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A novel integrated step-feed biofilm process for the treatment of decentralized domestic wastewater in rural areas of China

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Journal of environmental Sciences 2010年第3期22卷 321-327页

作者： Hanwen Liang, Min Gao, Junxin Liu, Yuansong Wei, Xuesong Guo Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 Chin

For wastewater treatment in rural areas, a novel three-stage step-feed wastewater treatment system, combined with a drop-aeration biofilm process, was tested in the laboratory to investigate its performance in removing suspended solids （SS）, chemical oxygen demand （COD）, NH4＋-N, total nitrogen （TN）, and total phosphorus （TP）. The removal rates of SS, COD and NH4＋-N were 90%, 80%, and 90% in efluent concentrations less than 10 mg/L, 50 mg/L and 8 mg/L, respectively. The TP removal rate was less satisfactory. The C/N ratio in the raw wastewater was often less than 3.5, and the removal efficiency of TN was therefore limited. A carbon-release batch experiment was carried out to measure the feasibility of enhancing denitrification at low influent C/N ratios. The result showed that the C/N could be over 9.0 in the supernatant. Polymerase chain reaction denaturing gradient gel electrophoresis technology was used to reveal the changes in the bacterial community during different stages of the integrated step-feed biofilm process. The results showed that banding patterns and the distribution of dominant bands for the same experimental period in different aerobic zones were similar. Phylogenetic analysis indicated that lanes 10, 11 and 12, which presented three aerobic zones at the same operation period, had the closest phylogenetic relationship among the lanes.

关键词： step-feed biofilm removal efficiency PCR-DGGE C/N ratio

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Differences in the behavior characteristics between Daphnia magna and Japanese madaka in an on-line biomonitoring system

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Journal of environmental Sciences 2010年第5期22卷 703-708页

作者： Zongming Ren Zijian Wang Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Yantai 264003 China state key laboratory of environmental aquatic chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

It is important to select suitable organisms to adapt the requirement of different environment monitoring *** our previous study,the behavioral responses of Daphnia magna and Japanese madaka （Oryzias latipes） were investigated and compared under flow-through conditions in an on-line biomonitoring *** results showed that both *** and Japanese madaka had similar biological clock,but the circadian rhythms of Japanese madaka was more clearly recorded than that of *** the sensitivity of *** was about two orders of magnitudes higher than that of Japanese madaka in different types of toxic chemicals （dichlorovos,deltamethrin and cadmium chloride）.However,when both animals were used in an on-line biomonitoring system,the life span of *** was less than 7 days and Japanese madaka could last for more than one month without ***,*** was proposed to be a more sensitive bioindicator and was suitable for short term monitoring the pollution events at concentration level closing to the water quality standard,while Japanese madaka was more suitable for the long-term monitoring for accidental discharges.

关键词： Daphnia magna Japanese madaka on-line biomonitoring behavioral responses

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Adsorption behavior of sulfamethazine in an activated sludge process treating swine wastewater

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Journal of environmental Sciences 2014年第8期26卷 1623-1629页

作者： Weiwei Ben Zhimin Qiang Xiaowei Yin Jiuhui Qu Xun Pan key laboratory of aquatic Science and Technology Research Center for Eco-Environmental SciencesChinese Academy of Sciences Foreign Economic Cooperation Office Ministry of Environmental Protection

Swine wastewater is an important pollution source of antibiotics entering the aquatic environment. In this work,the adsorption behavior of sulfamethazine（SMN）,a commonlyused sulfonamide antibiotic,on activated sludge from a sequencing batch reactor treating swine wastewater was investigated. The results show that the adsorption of SMN on activated sludge was an initially rapid process and reached equilibrium after 6 hr. The removal efficiency of SMN from the water phase increased with an increasing concentration of mixed liquor suspended solids,while the adsorbed concentration of SMN decreased. Solution pH influenced both the speciation of SMN and the surface properties of activated sludge,thus significantly impacting the adsorption process. A linear partition model could give a good fit for the equilibrium concentrations of SMN at the test temperatures（i.e.,10,20 and 30°C）. The partition coefficient（Kd） was determined to be 100.5 L/kg at 20°C,indicating a quite high adsorption capacity for SMN. Thermodynamic analysis revealed that SMN adsorption on activated sludge was an exothermic process. This study could help to clarify the fate and behavior of sulfonamide antibiotics in the activated sludge process and assess consequent environmental risks arising from sludge disposal as well.

关键词： Sulfonamide antibiotics Activated sludge Adsorption Swine wastewater treatment

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New concept of contaminant removal from swine wastewater by a biological treatment process

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Frontiers in Biology 2009年第4期4卷 402-413页

作者： Meixue CHEN Rong QI Wei AN Heqing ZHANG Yuansong WEI Yiqi ZHOU state key laboratory of environmental aquatic chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Pollution from concentrated animal feeding operations(CAFOs)are the most serious pollution source in China now,and swine wastewater contains high concentrations of nutrients such as chemical oxygen demand(COD),biochemical oxygen demand 5(BOD 5),ammonium,and emergent contaminants related to public *** processes are the most popular treatment methods for COD and ammonium *** the low operation cost,easy maintenance and high removal rate of contaminants in recent years,nitrogen removal via nitrite and real-time control processes using oxidation-reduction potential(ORP)and/or pH as parameters to control the aerobic and anaerobic cycles of a system has received much attention for animal wastewater *** the biological treatment process,the emergent contaminants such as estrogen,antibiotics,and disinfec-tion reagents have been the focus of research recently,and degradation bacteria and resistance bacteria have also been extracted from activated *** microbial analysis technique is also advancement in the field of biodegrada-tion bacteria and resistance *** of these advance-ments in research serve to improve wastewater treatment and decrease environmental hazards,especially for using manure as a fertilizer source for crop production.

关键词： contaminants swine wastewater biological treatment

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Preparation and Characterization of γ-Al2O3 by Polyaluminum Chloride with High Al13 Content

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Chinese Journal of Chemical Engineering 2010年第2期18卷 333-336页

作者：赵长伟王孝年何劲松栾兆坤彭先佳贾智萍 state key laboratory of environmental aquatic chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China The Equipment Research Institute of PLA's Second Artillery Beijing 100085 China

In this paper a polyaluminum chloride solution with high Al13 content was prepared and used as raw material for preparation ofγ-*** texture and crystalline phase of the prepared alumina samples were characterized by energy dispersive X-ray spectroscopy(EDX) ,X-ray diffraction,transmission electron microscope(TEM) and nuclear magnetic resonance(NMR) *** effects of alkaline solution and calcination temperature were *** results showed that alkaline solution including NH3·H2O and NaOH had little effect on the alumina sample *** impurities of NH4Cl and NaCl in solution can be removed through repeated washing by EDX *** temperature had a significant effect on alumina crystal *** alumina sample can transform completely toγ-Al2O3 in the subsequent heating from 600°C to 800°*** is very interesting that Al13 can be existed inγ-Al2O3 phase even after *** results indicate that polyaluminum chloride with high Al13 content is an effective material to prepareγ-Al2O3.

关键词： γ-Al2O3 polyaluminum chloride preparation Al13

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Immobilization of arsenic in soils by stabilized nanoscale zero-valent iron, iron sulfide (FeS), and magnetite (Fe_3O_4) particles

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Chinese Science Bulletin 2010年第23期55卷 365-372页

作者： ZHANG MeiYi WANG Yu ZHAO DongYe PAN Gang Research Center for Eco-environmental Sciences Chinese Academy of Sciences Beijing 100085 China environmental Engineering Program Department of Civil Engineering 238 Harbert Engineering Center Auburn University Auburn AL 36849 USA

Arsenic is a widespread contaminant in soils and groundwater. While various iron-based materials have been studied for immobilizing arsenic in contaminated soils, the feasibility of stabilized iron-based nanoparticles has not been reported. This study investigates the effectiveness of using three types of starch-stabilized iron-based nanoparticles, including zero-valent iron (ZVI), iron sulfide (FeS), and magnetite (Fe3O4), for immobilization of arsenic in two representative As-contaminated soils (an orchard soil and a fire range soil). To test the effect of the nanoparticles on the arsenic leachability, As-contaminated soils were amended with the nanoparticles at various Fe/As molar ratios (5:1―100:1) and contact time (3 and 7 d). After three days' treatments of a field-contaminated sandy soil, the PBET-based bioaccessibility of As decreased from an initial (71.3±3.1)% (mean±SD) to (30.9±3.2)% with ZVI, (37.6±1.2)% with FeS, and (29.8± 3.1)% with Fe3O4 at an Fe/As molar ratio of 100:1. The TCLP-based leachability of arsenic in a spiked fire range soil decreased from an initial (0.51±0.11)% to (0.24±0.03)%, (0.27±0.04)% and (0.17±0.04)% by ZVI, FeS, and Fe3O4 nanoparticles, respectively. The Fe3O4 nanoparticles appeared to be more effective (5% or more) than other nanoparticles for immobilizing arsenic. When the two soils were compared, the treatment is more effective on the orchard soil that has a lower iron content and higher initial leachability than on the range soil that already has a high iron content. These results suggest that these innocuous iron-based nanoparticles may serve as effective media for immobilization of As in iron-deficient soils, sediments or solid wastes.

关键词： Fe3O4 零价铁纳米级磁铁矿 FeS 硫化铁稳定土壤

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