自养-异养分步生物沥浸铅锌冶炼废渣中的有价/有毒金属

摘要针对铅锌冶炼废渣组分复杂、含有多种金属类型、难以用单一沥浸体系溶释所有目标金属的特点,提出自养-异养分步生物沥浸的处理思想。结果表明:自养生物沥浸对锌、镉、铟、砷、铅的最高沥浸效率分别为90%、86%、71%、25%、12%,对银的沥浸效率为0;异养生物沥浸对于自养生物沥浸残渣可获得最高37%的银沥浸效率,而铅锌冶炼废渣最高只有6%的银沥浸效率。因此,采用自养-异养分步生物沥浸铅锌冶炼废渣中的有价/有毒金属是一种铅锌冶炼废渣资源化的新途径。 Aiming at the characteristics of lead-zinc smelting slag with complex components,multiple metal types and difficulty in dissolving all target metals with a single leaching system,an autotrophic-heterotrophic bioleaching treatment idea was proposed.The results showed that in autotrophic bioleaching system the highest bioleaching efficiency of zinc,cadmium,indium,arsenic and lead were 90%,86%,71%,25%and 12%,respectively,and the dissolution of silver was 0.Heterotrophic bioleaching could achieve a silver leaching efficiency up to 37%for autotrophic bioleaching slag,but only 6%of silver bioleaching efficiency for raw lead-zinc smelting slag.Therefore autotrophic-heterotrophic bioleaching of valuable/toxic metals from lead-zinc smelting slag was a new way to recycle lead-zinc smelting slag.

作者王佳田炳阳贾纯友祁诗月褚会超张明顺辛宝平 WANG Jia;TIAN Bingyang;JIA Chunyou;QI Shiyue;CHU Huichao;ZHANG Mingshun;XIN Baoping(Beijing International Science and Technology Cooperation base for E-waste Recycling,College of Environmental and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100080;Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control,Maoming Guangdong 525000;School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081)

机构地区北京建筑大学环境与能源工程学院广东省石油化工污染过程与控制重点实验室北京理工大学材料学院

出处《环境污染与防治》 CAS CSCD 北大核心 2021年第4期436-439,444,共5页 Environmental Pollution & Control

基金广东省石油化工污染过程与控制重点实验室开放课题基金资助项目(No.2018B030322017) 国家自然科学基金资助项目(No.21777007)。

关键词铅锌冶炼废渣自养异养生物沥浸有价金属 lead-zinc smelting slag autotrophic heterotrophic bioleaching valuable metals

分类号 F42 [经济管理—产业经济]