摘要
土壤和水体砷污染日益严重,已成为不可忽视的环境问题。修复砷污染土壤和水体是一项极具挑战性的工作,近年来生物修复特别是微生物修复技术日益受到重视。利用微生物使亚砷酸盐[As(Ⅲ)]氧化,是极具潜力的微生物修复技术。从湖北大冶有色金属公司生产废水中分离筛选得到一株砷氧化菌,命名为P11,其可以将As(Ⅲ)有效地氧化为As(Ⅴ)。经鉴定,该菌株为Pseudomonas taiwanensis,在pH值6~9环境下也可以进行繁殖,其中最适生长pH值为7.0;最大As(Ⅲ)耐受浓度为50mmol·L^(-1)。
The increasingly critical arsenic pollution in soil and water has become a nonnegligible environmental problem.Remediation of arsenic contaminated soil and water is a challenging task.Bioremediation,especially microbial remediation technology,has received increasing attention in recent years.Using microorganisms to oxidize arsenite[As(Ⅲ)] is a microbial remediation technology with great potential.We isolated and screened an arsenic oxidizing strain from the industrial wastewater of Daye Nonferrous Metal Co.,Ltd.in Hubei,which is named as P11 and can effectively oxidize As(Ⅲ) to As(Ⅴ).P11 is identified as a genus of Pseudomonas taiwanensis .While P11 can breed under the environment of the pH value of 6-9,and the optimum growth pH value is 7.0.The maximum As(Ⅲ) tolerance concentration is 50 mmol·L -1 .
作者
李明兰
汪劲松
潘继承
LI Ming lan;WANG Jing song;PAN Ji cheng(College of Life Science,Hubei Normal University,Huangshi 435002,China)
出处
《化学与生物工程》
CAS
2018年第9期45-48,68,共5页
Chemistry & Bioengineering
关键词
砷污染
微生物修复技术
砷氧化
假单胞菌
arsenic pollution;microbial remediation technology;arsenic oxidation
Pseudomonas
作者简介
李明兰(1993-),女,湖北襄阳人,硕士研究生,研究方向:微生物与环境保护,E-mail:1576977984@qq.com;;通讯作者: 潘继承 ,博士,教授,E-mail:panprotein@hotmail.com。