Cr(Ⅵ)还原菌Microbacterium sp.QH-2对铝氧化物吸附铬影响的研究  

Effect of chromium(Ⅵ)reducing bacteria Microbacterium sp.QH-2 on the adsorption of chromium by aluminum oxide

作　　者：王春勇 张震斌[1] 崔岩山 朱博[1] 商井远 陈玥琪 WANG Chun-yong;ZHANG Zhen-bin;CUI Yan-shan;ZHU Bo;SHANG Jing-yuan;CHEN Yue-qi(School of Chemical and Environmental Engineering,Liaoning University of Technology,Jinzhou 121001,China;College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 101408,China;Ecological Environmental Protection Service Center of Huludao City,Huludao 125000,China)

机构地区：[1]辽宁工业大学化学与环境工程学院,辽宁锦州121001 [2]中国科学院大学资源与环境学院,北京101408 [3]葫芦岛市生态环境保护服务中心,辽宁葫芦岛125000

出　　处：《农业环境科学学报》2021年第4期801-805,共5页Journal of Agro-Environment Science

基　　金：辽宁省教育厅科学研究经费项目(JQL202015402,JFL202015403)。

摘　　要：氧化铝是土壤中最丰富和最活泼的矿物质之一,能对土壤中铬元素的迁移和转化产生影响。而土壤Cr(Ⅵ)还原菌能将Cr(Ⅵ)还原成Cr(Ⅲ)。本研究探讨了Cr(Ⅵ)还原菌对铝氧化物吸附铬的影响。结果表明,在pH为4时,γ-氧化铝对Cr(Ⅵ)吸附能力明显强于α-氧化铝。α-氧化铝和γ-氧化铝与Cr(Ⅵ)还原菌株Microbacterium sp.QH-2混合培养后,二者的晶体结构并未受影响,但菌株QH-2的存在增加了α-氧化铝和γ-氧化铝对总铬的吸附量。Alumina is one of the most abundant and active minerals in the soil,which can affect the migration and transformation of chromium(Cr)in the soil.The Cr(Ⅵ)reducing bacteria in the soil can reduce Cr(Ⅵ)to Cr(Ⅲ).This study discussed the effect of Cr(Ⅵ)reducing bacteria on the adsorption of Cr by aluminum oxide.The results showed that the adsorption capacity ofγ-alumina for Cr(Ⅵ)was significantly stronger than that ofα-alumina under a pH of 4.The crystal structure ofα-alumina,γ-alumina,and Cr(Ⅵ)-reducing bacteria was not affected after mixing the culture with strain Microbacterium sp.QH-2.However,the presence of strain QH-2 increased the adsorption capacity ofα-alumina andγ-alumina to Cr.

关 键 词：Α-氧化铝 Γ-氧化铝 铬 Cr(Ⅵ)还原菌 

分 类 号：X53[环境科学与工程—环境工程] X172