文献类型：期刊文献

英文题名：Biochar addition for accelerating bioleaching of heavy metals from swine manure and reserving the nutrients

作者：Wei, Xiaocheng[1];Liu, Dongfang[1];Li, Wenjiao[1];Liao, Lirui[1];Wang, Zhendong[1];Huang, Weiwei[2];Huang, Wenli[1]

机构：[1]Nankai Univ, Coll Environm Sci & Engn, Key Lab Pollut Proc & Environm Criteria, Minist Educ, Tianjin 300350, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：631-632

起止页码：1553

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20181204926928);WOS:【SCI-EXPANDED(收录号:WOS:000432471900154)】；

基金：This work was financially supported by the Tianjin Rural Work Committee of China (No. 201601190), Agro-Environment Protection Institute (AEPI) of the Ministry of Agriculture (MOA) of China (No. 2016YFD0801002-01) and National Natural Science Foundation of China (No. 51608279).

语种：英文

外文关键词：Bioleaching; Biochar; Heavy metals; Nutrient; Manure

摘要：Biochar was applied during the bioleaching of heavy metals (HMs) from swine manure (SM), in an attempt to accelerate the HMs removal rates and to reduce the losses of nutrient elements (nitrogen and phosphorus). Results showed that the addition of biochar (5 g L-1) could not only significantly shorten the leaching time of HMs (Cu, Zn, Mn and Cd) from 10 (control) to 7 days with a high solubilization efficiency of 90%, but also decrease the total nitrogen loss efficiency by 42.7% from 1803 (control) to 103.3 mg L-1 in the leachate. In addition, biochar addition facilitated Fe2+ oxidation rate, achieving much better pH and ORP conditions. Electronic conductivity and adsorption properties of biochar with changed microbial community probably contributed a lot to the enhanced HMs solubilization and reduced nitrogen loss during bioleaching. Although the addition of biochar only slightly reduced the total amount of phosphorus loss, the bioavailable phosphorus in SM after bioleaching was markedly increased by 13.7%. (C) 2018 Elsevier B.V. All lights reserved.