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| 1 | Comparison of the effects of aluminum and iron(Ⅲ)salts on ultrafiltration membrane biofouling in drinking water treatment显示文摘Coagulation plays an important role in alleviating membrane fouling, and a noticeable problem is the development of microorganisms after long-time operation, which gradually secrete extracellular polymeric substances(EPS). To date, few studies have paid attention to the behavior of microorganisms in drinking water treatment with ultrafiltration(UF)membranes. Herein, the membrane biofouling was investigated with different aluminum and iron salts. We found that Al_2(SO_4)_3·18 H_2O performed better in reducing membrane fouling due to the slower growth rate of microorganisms. In comparison to Al_2(SO_4)_3·18H_2O,more EPS were induced with Fe_2(SO_4)_3·x18H_2O, both in the membrane tank and the sludge on the cake layer. We also found that bacteria were the major microorganisms, of which the concentration was much higher than those of fungi and archaea. Further analyses showed that Proteobacteria was dominant in bacterial communities, which caused severe membrane fouling by forming a biofilm, especially for Fe_2(SO_4)_3·x18H_2O. Additionally, the abundances of Bacteroidetes and Verrucomicrobia were relatively higher in the presence of Al_2(SO_4)_3·18 H_2O,resulting in less severe biofouling by effectively degrading the protein and polysaccharide in EPS. As a result, in terms of microorganism behaviors, Al-based salts should be given preference as coagulants during actual operations. | Xing Wang Baiwen Ma Yaohui Bai Huachun Lan Huijuan Liu Jiuhui Qu | 2018 | Journal of Environmental Sciences2018，30，1： | 8 |
| 2 | Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO2 and FeOOH显示文摘FMBO 的吸附潜力, FeOOH , MnO <潜水艇class=“ a-plus-plus ”>为 Cd 的移动的 2 <啜class=“ a-plus-plus ”>2+, Cu <啜class=“ a-plus-plus ”>2+和 Pb <啜class=“ a-plus-plus ”>在水的系统的2+在这研究被调查。比作 FMBO 和 FeOOH, MnO < 潜水艇 class= “ a-plus-plus ” > 2 向三个金属离子为高得多的移动提供了能力。 MnO 的最大的吸附能力<潜水艇class=“ a-plus-plus ”>为 Cd 的 2 <啜class=“ a-plus-plus ”>2+, Cu <啜class=“ a-plus-plus ”>2+和 Pb <啜class=“ a-plus-plus ”>2+是 1.23 , 2.25 和 2.60 mmol ???????剕偅??????????????????????￡?? 蓈 ?? | Wei XU Huachun LAN Hongjie WANG Hongming LIU Jiuhui QU | 2015 | Frontiers of Environmental Science & Engineering2015，9，3： | 4 |
| 3 | The effects of hydrogen peroxide pre-oxidation on ultrafiltration membrane biofouling alleviation in drinking water treatment显示文摘Pre-oxidation is widely used to reduce ultrafiltration membrane fouling.However,the variation in the composition of microbial communities and extracellular polymeric substances(EPSs) accompanying pre-oxidation in drinking water treatment has received little attention.In this study,hydrogen peroxide(H_2O_2) was used in a coagulationultrafiltration process with Al_2(SO_4)_3·18H_2O.A long-term reactor experiment(60 d) showed that pre-oxidation alleviated membrane fouling,mainly due to its inhibition of microbial growth,as observed by flow cytometry measurements of the membrane tank water.Further analysis of the formed cake layer demonstrated that the corresponding levels of EPS released from the microbes were lower with than without H_2O_2 treatment.In comparison to polysaccharides,proteins dominated the EPS.2 D-electrophoresis showed little difference(p > 0.05,Student's t-test) in the composition of proteins in the cake layer between the treatments with and without H_2O_2.The molecular weights of proteins ranged from approximately 30–50 kDa and the majority of isoelectric points ranged from 6 to 8.Highthroughput sequencing showed that the predominant bacteria were Proteobacteria,Bacteroidetes,and Verrucomicrobia in both cake layers.However,the relative abundance of Planctomycetes was higher in the cake layer with H_2O_2 pre-oxidation,which was likely probably due to the strong oxidative resistance of its cell wall.Overall,our findings clarify the fundamental molecular mechanism in H_2O_2 pre-oxidation for ultrafiltration membrane bio-fouling alleviation in drinking water treatment. | Xing Wang Baiwen Ma Yaohui Bai Huachun Lan Huijuan Liu Jiuhui Qu | 2018 | Journal of Environmental Sciences2018，30，11： | 4 |
| 4 | Adsorption of Cu(II)–EDTA chelates on tri-ammonium-functionalized mesoporous silica from aqueous solution显示文摘 | Liyuan Wu Hongjie Wang Huachun Lan Huijuan Liu Jiuhui Qu | 2013 | Separation and Purification Technology2013，，： | 1 |
| 5 | 3D electronic and photonic structures as active biological interfaces显示文摘Biocompatible materials and structures with three-dimensional(3D)architectures establish an ideal platform for the integration of living cells and tissues,serving as desirable interfaces between biotic and abiotic systems.While conventional 3D bioscaffolds provide a mechanical support for biomatters,emerging developments of micro-,nano-,and mesoscale electronic and photonic devices offer new paradigms in analyzing and interrogating biosystems.In this review,we summarize recent advances in the development of 3D functional biointerfaces,with a particular focus on electrically and optically active materials,devices,and structures.We first give an overview of representative methods for manufacturing 3D biointegrated structures,such as chemical synthesis,microfabrication,mechanical assembly,and 3D printing.Subsequently,exemplary 3D nano-,micro-,and mesostructures based on various materials,including semiconductors,metals,and polymers are presented.Finally,we highlight the latest progress on versatile applications of such active 3D structures in the biomedical field,like cell culturing,biosignal sensing/modulation,and tissue regeneration.We believe future 3D micro-,nano-,and mesostructures that incorporate electrical and/or optical functionalities will not only profoundly advance the fundamental studies in biological sciences,but also create enormous opportunities for medical diagnostics and therapies. | Huachun Wang Pengcheng Sun Lan Yin Xing Sheng | 2020 | InfoMat2020，2，3： | 1 |
| 6 | Preparation of a manganese dioxide/carbon fiber electrode for electrosorptive removal of copper ions from water 显示文摘 | HU Chengzhi LIU Fangyuan LAN Huachun | 2015 | Journal of Colloid and Interface Science2015，446，： | 1 |
| 7 | Graphene-modified Pd/C cathode and Pd/GAC particles for enhanced electrocatalytic removal of bromate in a continuous threedimensional electrochemical reactor显示文摘 | Mao Ran Zhao Xu Lan Huachun | 2015 | Water Research2015，77，2： | 1 |
| 8 | Effects of fluoride on the removal of cadmium and phosphate by aluminum coagulation显示文摘This study focuses on the effects of p H and fluoride at different molar ratios of fluoride to Al(R F:Al) on the removal of cadmium(Cd^(2+)) and phosphate by Al coagulation. Fluoride at R F:Al≥ 3:1 inhibits the removal of Cd over wide Al dose ranges from 5 to 10 mg/L as Al. The removal of phosphate decreases significantly at high R F:Al of 10:1 whereas at lowered R F:Al(i.e., ≤ 6:1), an adverse effect is observed only at insufficient Al doses below 2 mg/L. Fluoride shows inhibitive effects towards the removal of Cd at p H 7 and 8 and that of phosphate at p H 6. Fluoride decreases the ζ-potential in both systems, and the decreasing extent is positively correlated to the elevated R F:Al. The Al fluoride interactions include the formation of Al–F complexes and the adsorption of fluoride onto Al(OH)_3 precipitates, i.e., the formation of Al(OH)n F m. Al–F complex formation inhibits Al hydrolysis and increases residual Al levels, and a more significant increase was observed at lower p H. Al–F complexes at high R F:Al complicate the coagulation behavior of Al towards both negative and positive ionic species. Moreover, fluoride at low R F:Al shows little effect on Al coagulation behavior towards Cd^(2+)and phosphate, and the spent defluoridation adsorbent,i.e., aluminum(Al) hydro(oxide) with adsorbed fluoride at R F:Al of below 0.1:1, may be reclaimed as a coagulant after being dissolved. | Ruiping Liu Bao Liu Lijun Zhu Zan He Jiawei Ju Huachun Lan Huijuan Liu | 2015 | Journal of Environmental Sciences2015，27，6： | 1 |
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