摘要
本文以探索不同环境因子对Cr(Ⅵ)还原菌株还原有害重金属Cr(Ⅵ)能力的影响为目标,从环境中分离获得的Cr(Ⅵ)还原菌株,并将菌株培养于不同温度、pH,初始Cr(Ⅵ)浓度梯度下,检测菌株还原Cr(Ⅵ)的能力。W1菌和W3菌均具有一定的Cr(Ⅵ)处理能力。96h还原率可达到20%以上。W1和W3均可在温度为25℃-35℃、pH7-9的范围内生长。W1和W3还原Cr的最适温度为30℃,最适pH为8,最大耐受Cr浓度为200mg/L。本研究对利用微生物修复土壤及水体中Cr(Ⅵ)污染的相关研究和应用具有重要意义。
This paper in order to explore the different environmental factors on Cr(Ⅵ)reduction strain reduction of harmful heavy metals,the effects of Cr(Ⅵ)as the goal,From the environment,the Cr(Ⅵ)reduction of the strains were isolated,and the strains at different temperature,pH,initial Cr(Ⅵ)concentration gradient,the test strain capacity reduction of Cr(Ⅵ).The results indicated that the pH range of the highest tolerance of bacteria and the optimal temperature were added.This study is of great significance to the research and application of Cr(Ⅵ)pollution in soil and water using microorganisms.
作者
王思雅
刘朝阳
皮海廷
李宁
Wang Siya;Liu Chaoyang;Pi Haiting;Li Ning(School of water conservancy and environment HuBei,Yichang 443002;College of biology and pharmacy,three gorges university HuBei,Yichang 443002)
出处
《科技风》
2019年第33期238-239,共2页
关键词
铬污染
细菌
温度
PH
理化性质
Chromium pollution
Bacteria
Temperature
pH
The physical and chemical properties
