Continuous treatment process of mercury removal from aqueous solution by growing recombinant E-coli cells and modeling study

被引：10
|
作者：
Deng, X. [1 ]
Hu, Z. L. [1 ]
Yi, X. E. [2 ]
机构：
[1] Shenzhen Univ, Coll Life Sci, Inst Ecol Environm, Shenzhen 518060, Peoples R China
[2] Fujian Normal Univ, Coll Chem & Mat, Fuzhou 350007, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2008年 / 153卷 / 1-2期
关键词：
continuous treatment; mercuric ion; bioaccumulation; genetically engineered E. coli;
D O I：
10.1016/j.jhazmat.2007.08.080
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A continuous treatment process was developed to investigate the capability of genetically engineered E coli to simultaneously accumulate mercuric ions and reproduce itself in a continuous stirred tank reactor (CSTR) system. The influence of dilution rate and initial Hg2+ concentration on continuous process was evaluated. Results indicated that the recombinant E. coli could effectively accumulate Hg2+ from aqueous solution with Hg2+ removal ratio up to about 90%, and propagate its cells at the same time in the continuous treatment system under suitable operational conditions. A kinetic model based on mass balance of Hg2+ was proposed to simulate the continuous process. The modeling results were in good agreement with the experimental data. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：487 / 492
页数：6
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