期刊：
Paper Asia,2018年2018(Compendium3):74-78 ISSN：0218-4540
通讯作者：
Liang, Y.
作者机构：
Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang, 421001, China;Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
通讯机构：
Institute of Botany, Chinese Academy of Sciences, Beijing, China
摘要：
Arbuscular mycorrhizal fungi (AMF) are symbiotic partner of plants and are important for survival and growth of plants under stresses. Three AMF species were inoculated to Lolium Perenne L. and plant performances in uranium contaminated and uncontaminated soils. The results show that (1) AMF inoculation improved the uranium resistance of Lolium Perenne, and increased photosynthetic pigments and soluble protein content and decreased MDA content were found in AMF inoculation treatments. (2) Antioxidant system enzyme activity in vivo Lolium Perenne also increased. (3) Uranium accumulation characteristics varied in three AMF inoculation treatments, indicating that different mechanisms of AMF species may be involved in response to uranium stress.
作者机构：
[Liu, Bing-Rui; Liu, Qi-Feng; Zhang, Qian; Ma, Jing-Jun] Agr Univ Hebei, Coll Sci & Technol, Huanghua 061100, Hebei, Peoples R China.;[Li, Shiyou] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.;[Ma, Jing-Jun] Hebei Agr Prod Proc Engn Technol Res Ctr, Baoding 071001, Hebei, Peoples R China.
通讯机构：
[Ma, Jing-Jun] A;[Li, Shiyou] U;[Ma, Jing-Jun] H;Agr Univ Hebei, Coll Sci & Technol, Huanghua 061100, Hebei, Peoples R China.;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
关键词：
Construction of surface defects;Ultrafine TiO_2;Low-cost transition metal;Surface doping;Photocatalytic H_2 production
摘要：
Inefficient charge separation and limited light absorption are two critical issues associated with high-efficiency photocatalytic H_2 production using TiO_2. Surface defects within a certain concentration range in photocatalyst materials are beneficial for photocatalytic activity. In this study, surface defects (oxygen vacancies and metal cation replacement defects) were induced with a facile and effective approach by surface doping with low-cost transition metals (Co, Ni, Cu, and Mn) on ultrafine TiO_2. The obtained surface-defective TiO_2 exhibited a 3-4-fold improved activity compared to that of the original ultrafine TiO_2. In addition, a H_2 production rate of 3.4 µmol/h was obtained using visible light (λ > 420 nm) irradiation. The apparent quantum yield (AQY) at 365 nm reached 36.9% over TiO_2-Cu, significantly more than the commercial P25 TiO_2. The enhancement of photocatalytic H_2 production activity can be attributed to improved rapid charge separation efficiency and expanded light absorption window. This hydrothermal treatment with transition metal was proven to be a very facile and effective method for obtaining surface defects.
作者机构：
[Zeng, Taotao] Postdoctoral Research Centre of Mining Engineering, University of South China, Hengyang, Hunan, 421001, China;[谢水波] Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydromentallurgy, University of South China, Hengyang, Hunan, 421001, China;[谢水波; 马华龙; 廖伟; 荣丽杉; 李仕友; 蒋小梅; Zeng, Taotao] Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, 421001, China
通讯机构：
[Xie, S.] H;Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China
作者机构：
[荣丽杉; 熊芬; 凌辉; 李仕友] School of Urban Construction, University of South China, Hengyang, 421001, China;[谢水波] Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, 421001, China;[刘金香] School of Urban Construction, University of South China, Hengyang, 421001, China, Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, 421001, China
通讯机构：
[Xie, S.] H;Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China
作者机构：
[肖拾红; 陈华柏; 谢水波; 李仕友; 刘金香; 吴宇琦] Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, 421001, China
通讯机构：
[Xie, S.] H;Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, China
关键词：
Shewanella oneidensis;U(VI);mechanism;infrared spectroscopy;scanning electron microscopy;energy dispersive spectrometer
摘要：
In order to realize the process mechanism that Shewanella oneidensis(S. oneidensis) reduced uranium(VI), and improve its reduction effect, the reduction mechanisms of uranium with S. oneidensis were studied by FTIR, SEM, EDS. The results show that after the S. oneidensis reduction of U(VI), the cell surface morphology is changed, the gaps and caverns on S. oneidensis surface decrease and more uncrystalmini grains through electron appear, which are binding each other. Much of new crystal structures were generated on the surface of cell. K+ and PO43+ were involved in the process of U(VI) reduction. FT IR spectra analysis indicated that the main groups of S. oneidensis were association of hydroxyl, phenolic hydroxyl, amidogent, halogenated hydrocarbon, carboxyl in the process of U (VI) reduction.
摘要：
Phenolic wastewater comes mainly from coking, gas, and petrochemical plants, and other industrial sectors, as well as petroleum cracking ethylene, synthetic phenol, poly Thalidomide fibers, organic pesticides, and the phenolic resin production process. Phenolic compounds are monitoring our priority persistent organic compounds, having already been included in the column of carcinogenic single ring aromatics. In this paper, catalytic supercritical water gasification was applied to treat the phenolic wastewater. The influence of alkali on the gasification of phenolic wastewater with NaOH as catalyst at 580 degrees C, 27MPa was investigated. The results showed that the NaOH addition increased H-2 fraction and gas yield. The reaction mechanism was analyzed.
摘要：
The different values of pH, EPS dosage, initial uranium concentration, dialysis temperature and other factors, were investigated of anaerobic sludge extracellular polymer (EPS) on U (VI) in wastewater by adsorption effect. The results show that, the best pH of EPS adsorption of uranium is 6, when the initial concentration of uranium is 20mg/L, EPS dosage is 56.1 g/L, the removal rate can reach 98.3%. The maximum adsorption capacity of U (VI) is 0.891mg/g EPS.
摘要：
In order to investigate the mechanism of extracellular polymeric substances (EPS) influencing sludge characteristics, variations of extractable EPS from municipal sewage sludge by acid/alkaline pretreatment and gamma-ray irradiation were studied. The changes in constituents of EPS were analyzed by UV-vis spectra and SEM images. The effects of alkaline pretreatment and gamma-ray irradiation on the functional groups in EPS were investigated by Fourier transform infrared (FTIR) spectrometer. Results showed that the extractable EPS increased clearly with increasing irradiation dose from 0 to 15 kGy. UV-vis spectra indicated that a new absorption band from 240 nm to 300 nm existed in all irradiated samples, apart from acid condition. The results of FTIR spectroscopic analysis indicated that, irradiation influenced major functional groups in EPS, such as protein and polysaccharide, and these effects were clearer under alkaline condition. SEM images provided that after alkaline hydrolysis, gamma-ray irradiation was more effective in resulting in the sludge flocs and cells broken, compared with acid pretreatment (pH 2.50). (c) 2013 Published by Elsevier Ltd.
作者机构：
[唐振平; 苑士超; 刘迎九] Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang 421001, China;Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China;[刘金香; 谢水波; 李仕友] Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, Hengyang 421001, China, Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
通讯机构：
[Xie, S.] H;Hunan Provincial Key Laboratory of Pollution Control and Resources Technology, University of South China, China
作者机构：
[Xie, S. B.; Wang, J. S.; Liu, H. Y.; Tang, Z. P.; Li, S. Y.; Ling, H.] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Xie, S. B.] U;Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
会议名称：
1st International Conference on Advances in Civil Infrastructure Engineering (ICACIE 2012)
会议时间：
SEP 15-16, 2012
会议地点：
Changsha, PEOPLES R CHINA
会议主办单位：
[Tang, Z. P.;Ling, H.;Xie, S. B.;Li, S. Y.;Wang, J. S.;Liu, H. Y.] Univ South China, Hunan Prov Key Lab Pollut Control & Resources Tec, Hengyang 421001, Hunan, Peoples R China.
摘要：
Fe-immobilized bentonite, prepared with bentonite and FeCl3 was used for the adsorption of uranium(VI) in this study, solution pH, ion strength, contact time and temperature were investigated, structural characterization of Fe-immobilized bentonite was assayed by X-ray Diffraction and Fourier Transform Infrared Spectroscopy. Results indicated that the adsorption capacity were strongly affected by the solution pH and ion strength, the adsorption efficiency was 91.8% when pH value was 6 and ion strength was 0.01 mol•L-1, higher or lower pH did not favor the U(VI) adsorption. The adsorption mechanism was discussed by the views of reactive kinetics and thermodynamics along with Scanning Electron Microscope. The adsorption kinetics process was fitted well with the second-order kinetic equation, when the initial U(VI) concentration was less than 38.08mg/L, Langmuir equations could describe the adsorption isotherm of U(VI) well with the maximum adsorption capacity of 169.5mg/g at 303K
作者机构：
[张亚萍1; 刘海燕1; 刘迎九1; 谢水波1,2; 王劲松1] School of Urban Construction, University of South China, Hengyang 421001, China;[李仕友2; 谢水波1,2; 刘金香2] Key Discipline Lab. for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001, China
通讯机构：
School of Urban Construction, University of South China, China
摘要：
With the example of the water supply engineering planning of small towns in southern china, the effects of town water consumption forecast, water resource selection, water site choice, pipe network planning on the present engineering planning of water supply were investigated. The analyses show that the water consumption forecast should adopt many kinds of methods to check each other, and finally determine a proper value. To ensure water yield of source water reliable and water quality to meet the requirements are the first principle of the water resource selection. The location of water plant should be determined according to the characteristics of the water source and the hydrological and hydrogeological conditions, in accordance with the relevant requirements specification. The basic requirements of the pipe network layout are as follows: the security of water quality; the reliability of the water volume and water pressure; the operation reliability and the least investment. As a part of the overall planning, the water supply engineering planning should proceed from reality to deal with the relationship of the recent construction and long-term development in order to push small towns economy to a rapid growth.
