AI Article Synopsis
- A continuous treatment process was developed using genetically engineered E. coli to accumulate mercuric ions (Hg(2+)) while reproducing in a continuous stirred tank reactor (CSTR).
- The study assessed the effects of dilution rate and initial Hg(2+) concentration, finding that the modified E. coli could remove up to 90% of Hg(2+) from water while growing.
- A kinetic model based on mass balance was created to simulate the process, successfully matching experimental data.
Article Abstract
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 Hg(2+) concentration on continuous process was evaluated. Results indicated that the recombinant E. coli could effectively accumulate Hg(2+) from aqueous solution with Hg(2+) 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 Hg(2+) was proposed to simulate the continuous process. The modeling results were in good agreement with the experimental data.
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| http://dx.doi.org/10.1016/j.jhazmat.2007.08.080 | DOI Listing |
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