作者：
Wang Aihe;Zhou Kanggen*;Liu Xing;Liu Fang;Zhang Chun;...
期刊：
Journal of Colloid and Interface Science,2017年505:947-955 ISSN：0021-9797
通讯作者：
Zhou Kanggen
作者机构：
[Wang Aihe; Chen Quanzhou; Liu Xing; Zhou Kanggen; Liu Fang] Cent S Univ, Sch Met & Environm, Lushan South Rd 932, Changsha 410083, Hunan, Peoples R China.;[Wang Aihe; Zhang Chun] Hunan City Univ, Sch Municipal & Mapping Engn, Yingbin East Rd 518, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Zhou Kanggen] C;Cent S Univ, Sch Met & Environm, Lushan South Rd 932, Changsha 410083, Hunan, Peoples R China.
作者机构：
[朱福造; 张道利; 刘耀; 汪元南; 苟宇; 陈耀宁; Chen, Yaoning] College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China;[黎媛萍] College of Municipal and Mapping Engineering, Hunan City University, Yiyang, 413000, China;[朱福造; 张道利; 刘耀; 汪元南; 苟宇; 陈耀宁; Chen, Yaoning] Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha, 410082, China
通讯机构：
College of Environmental Science and Engineering, Hunan University, Changsha, China
摘要：
Studies were performed to evaluate influence of biochar addition on physico-chemical process, heavy metals transformation and bacterial community diversity during composting of sediment with agricultural wastes. Simultaneously, the relationships between those parameters including heavy metals and bacterial community compositions were evaluated by redundancy analysis (RDA). The results show that the extraction efficiency of DTPA extractable heavy metals decreased in both piles, and reduced more in pile with biochar addition about 0.1-2.96%. Biochar addition dramatically influenced the bacterial community structure during the composting process. Moreover, the bacterial community composition was significantly correlated with C/N ratio, water soluble carbon (WSC), and organic matter (OM) (P < 0.05) in pile with biochar addition; while significantly correlated with temperature, WSC, and C/N ratio in pile which was free of biochar. This study would provide some valuable information for improving the composting for disposal of river sediment with heavy metals contamination. (C) 2017 Elsevier Ltd. All rights reserved.
作者机构：
[吴兴应] College of Municipal and Mapping Engineering, Hunan City University, Yiyang, 413000, China;[龚光彩; 王晨光] College of Civil Engineering, Hunan University, Changsha, 410082, China
通讯机构：
College of Municipal and Mapping Engineering, Hunan City University, Yiyang, China
作者机构：
[陈耀宁; 苟宇; 伍艳馨; 陈艳容; 刘耀; 汪元南; 张道利; 朱福造; Zeng, Guang-Ming] College of Environment Science and Engineering, Hunan University, Changsha;410082, China;Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Changsha;[黎媛萍] College of Municipal and Mapping Engineering, Hunan City University, Yiyang;413000, China
作者机构：
[汪爱河; 周康根; 陈泉洲; 刘芳; 刘行] School of Metallurgy and Environment, Central South University, Changsha, 410083, China;[汪爱河] School of Municipal and Mapping Engineering, Hunan City University, Yiyang, 413000, China
通讯机构：
School of Metallurgy and Environment, Central South University, Changsha, China
作者机构：
[陈耀宁; 汪元南; 陈艳容; 伍艳馨; 苟宇; 朱福造; 张道利; 刘耀; Zeng, Guang-Ming] College of Environment Science and Engineering, Hunan University, Changsha;410082, China;Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Changsha;[黎媛萍] College of Municipal and Mapping Engineering, Hunan City University, Yiyang;413000, China
期刊：
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015,2016年:791-794
作者机构：
[Zhang, Wei; Deng, Yumei; Wang, Aihe] College of Municipal and Mapping Engineering, Hunnan City University, Yiyang, China;[Zhang, Wei] College of Civil Engineering, Hunan University, Changsha, China
摘要：
This paper studied the degradation of 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) in contaminated soil under composting and natural conditions, respectively. BDE-47 residue in agricultural waste-composting pile was determined during 45-day composting. The microbial communities were determined by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE), and the relationships between the DGGE results and physico-chemical parameters were evaluated by redundancy analysis (RDA) and heatmap-clustering analysis. The results showed that the degradation rate of BDE-47 was significantly higher in agricultural waste-composting pile compared with control group, which was enhanced up to almost 15 % at the end of composting. There were different environmental factors which affected the distribution of composting bacterial and fungal communities. The bacterial community composition was more significantly affected by the addition of BDE-47 compared with other physico-chemical parameters, and BDE-47 had stronger influences on bacterial community than fungal community during the composting. Meanwhile, the most variation in distribution of fungal community was explained by pile temperature.
作者机构：
[王密; 张建强; 闵小波; 张纯; 李辕成] School of Metallurgy and Environment, Central South University, Changsha, China;[闵小波] Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, Central South University, Changsha, China;[张纯] School of Municipal and Mapping Engineering, Hunan City University, Yiyang, China
通讯机构：
School of Metallurgy and Environment, Central South University, Changsha, China
作者机构：
[汪爱河; 周康根; 陈泉州; 刘芳; 刘行] School of Metallurgy and Environment, Central South University, Changsha, 410083, China;[汪爱河] School of Municipal and Mapping Engineering, Hunan City University, Yiyang, 413000, China
作者机构：
[Cao, Yijia; Shi, Haiqing; Kuang, Yonghong; Li, Canbing] Hunan Univ, Coll Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China.;[Zhang, Yongjun] S China Univ Technol, Elect Power Coll, Guangzhou 510640, Guangdong, Peoples R China.;[Gao, Dan] North China Elect Power Univ, Sch Energy Power & Mech Engn, Beijing 102206, Peoples R China.;[Sun, Liang] Hunan City Univ, Municipal & Surveying Engn, Yiyang 413000, Peoples R China.
作者机构：
[谢雪梅; 宋迎春; 唐争气; 林东方] School of Geosciences and Info.-Physics, Central South University, Changsha, China;[唐争气] School of Municipal and Surveying Engineering, Hunan City University, Yiyang, China
通讯机构：
School of Geosciences and Info.-Physics, Central South University, Changsha, China
作者机构：
[吴兴应] College of Municipal and Mapping Engineering, Hunan City University, Yiyang, Hunan Province, China;[龚光彩; 王晨光] College of Civil Engineering, Hunan University, Changsha, Hunan Province, China
通讯机构：
College of Municipal and Mapping Engineering, Hunan City University, Yiyang, Hunan Province, China
作者机构：
[唐争气; 宋迎春; 邹勃] School of Geosciences and Info-Physics, Central South Univ, Changsha, Hunan, China;[唐争气] School of Municipal and Surveying Engineering, Hunan City Univ, Yiyang, Hunan, China
通讯机构：
School of Geosciences and Info-Physics, Central South Univ, Changsha, Hunan, China
摘要：
The reductive acid leaching kinetics of synthetic cadmium-bearing zinc ferrite was investigated, and the influence of reaction temperature, sulfuric acid and hydrazine sulfate were studied. The results illustrated that an increase in the reaction temperature, initial sulfuric acid and hydrazine sulfate significantly enhanced the extraction efficiencies of cadmium, zinc and iron. The leaching kinetics were controlled by a surface chemical reaction based on a shrinking core model. The empirical equation
$$ 1 - (1 - X)^{{{\raise0.7ex\hbox{$1$} \!\mathord{\left/ {\vphantom {1 3}}\right.\kern-0pt} \!\lower0.7ex\hbox{$3$}}}} = k_{\text{r}} t $$
applied was found to fit well with the kinetics analysis; the leaching processes of cadmium, zinc and iron were similar and the activation energies were 79.9 kJ/mol, 77.9 kJ/mol and 79.7 kJ/mol, respectively. The apparent orders of cadmium-bearing zinc ferrite dissolution with respect to sulfuric acid concentration were 0.83, 0.83 and 0.84 for Cd, Zn and Fe, respectively.
