摘要
为了高效去除Cr(Ⅵ),从广西河池市南丹县大厂镇矿区受重金属污染的土壤样品中筛选出1株高效去除Cr(Ⅵ)的细菌假单胞菌Cr13菌株,探究其去除Cr(Ⅵ)的优化条件。通过中心组合设计(CCD)及响应面法分析影响Cr(Ⅵ)去除率的各因素的交互作用,最终确定假单胞菌Cr13去除Cr(Ⅵ)的最优条件为时间30 h、Cr(Ⅵ)浓度60 mg/L、pH 5.50,优化后假单胞菌Cr13对Cr(Ⅵ)去除率达到72.05%。通过响应面法优化后能提高Cr(Ⅵ)的去除率,在含铬废水处理方面具有良好的应用前景。
In order to effectively remove Cr(Ⅵ),a bacterial strain Pseudomonas sp.Cr13 that was remarkably removed Cr(Ⅵ)was isolated from mine contaminated soils in Dachang town.The Central Composite Design and response surface methodology were conducted to analyze the interactions among each factor.The optimal conditions for removing Cr(Ⅵ)by Pseudomonas sp.Cr13 were as follows:culture time of 30 h,Cr(Ⅵ)concentration of 60 mg/L,pH of 5.50,respectively.Under the optimized conditions,the removal rate of Cr(Ⅵ)by Cr13 strain was 72.05%.In conclusion,the optimized conditions by response surface methodology may improve the removal rate of Cr(Ⅵ),and it has a promising application prospect in the treatment of chromium-containing wastewater.
作者
郭辰
韩彪
潘翠
吴洁敏
陈姻月
周飞
甘甜
尚常花
GUO Chen;HAN Biao;PAN Cui;WU Jiemin;CHEN Yinyue;ZHOU Fei;GAN Tian;SHANG Changhua(Scientific Research Academy of Guangxi Environmental Protection,Nanning Guangxi 530022,China;College of Life Sciences,Guangxi Normal University,Guilin Guangxi 541006,China)
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2021年第3期113-121,共9页
Journal of Guangxi Normal University:Natural Science Edition
基金
广西自然科学基金(2018GXNSFAA138008)
广西地方标准制定项目(2018-0103)
广西师范大学博士科研启动基金(2017BQ015)。
关键词
假单胞菌
六价铬
响应面分析
条件优化
中心组合设计
Pseudomonas
Cr(Ⅵ)
response surface methodology
optimization of conditions
central composite design
作者简介
通信作者:尚常花(1980-),男,山西泽州人,广西师范大学副教授,博士。E-mail:shangchanghua@mailbox.gxnu.edu.cn。
