期刊论文

中文

微生物学通报

0253-2654

2015

42

2

254-263

10.13344/j.microbiol.china.140503

(No.2012BAC09B03):国家“十二五”科技支撑计划项目 (No.2012GS430203):国家“十二五”科技惠民计划项目 :湖南省环境科学与工程重点学科建设项目

本校为第一机构

【目的】从铅锌矿区分离筛选出耐铅锌性菌株,并研究其吸附铅、锌的影响因素及吸附机理,为重金属污染微生物修复提供参考。【方法】以从铅锌矿区筛选出的耐铅锌真菌HA作为试验菌株,考察影响其对铅、锌去除能力的主要因素(初始浓度、pH、接种量),同时通过等温吸附模型、动力学分析及红外光谱分析探讨其相关的吸附机理。【结果】经鉴定,从矿区筛选的对Pb~(2+)、Zn~(2+)有较强耐性的菌株HA为米曲霉(Aspergillus oryzae);在初始铅、锌浓度的实验范围内(100-800mg/L),HA对铅、锌离子的去除率随着其初始浓度增加而减小,25h后HA的生长进入平稳期,且对铅、锌离子的去除率趋于稳定。当铅、锌初始浓度为100...

[Objective] The purpose of this paper is to isolate and screen lead-zinc resistant strains from lead-zinc tailings areas. Its influence factors and mechanism of Pb（Ⅱ）and Zn（Ⅱ）adsorption also were studied. This work is expected to provide a reference for bioremediation of heavy metal pollution. [Methods] The fungus HA which was isolated and screened from lead-zinc tailings areas was used. The main influence factors （i.e., initial concentration of Pb（Ⅱ）and Zn（Ⅱ）, pH, inoculation amounts） on the removal of Pb（Ⅱ）and Zn（Ⅱ）were in...