2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 7: Energy Production, Environmental & Multiscale
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 528 pages |
| ISBN: | 978-1-987820-09-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Study of the biosorption of heavy metals of anthropogenic effluents using Escherichia coli
Onofre Monge1; Teresa Certucha1; Francisco Javier Almendariz1; Luis Carlos Platt1; Agustin Gomez1;1UNIVERSIDAD DE SONORA, Hermosillo, Mexico;
Type of Paper: Regular
Id Paper: 92
Topic: 8
Abstract:
Controlling and reducing water pollution is a major problem for the society. Biosorption technology, based on the ability of certain organisms to capture metal species from aqueous solutions, has received particular attention because of its potential for treating wastewater.
The aim of this study was to determine copper (Cu), iron (Fe), manganese (Mn) and zinc (Zn) biosorption in the anthropogenic origin effluent, using Escherichia coli. The effluent waters polluted with heavy metals were collected (The concentrations of metals in the discharge were: Cu 10, Fe 350, Mn 35 and Zn 55 mg/L), and Escherichia coli was isolated and tested with heavy metals biosorption batch system. Toxicity tests (IC50) and the kinetics study of heavy metals biosorption were conducted with synthetic solutions of Cu, Fe, Mn and Zn.
The results of the IC50 for Escherichia coli were: Cu 28, Fe 70, Mn 210 and Zn 40 mg/L. The removal of heavy metals in batch system using Escherichia coli was very favorable since Cu 7.4, Fe 123, Mn 20 and Zn 35 mg/L were removed. Fitting the data to Langmuir, we obtained the maximum adsorption constant qo: Cu 200, Fe 166, Mn 333.3 and Zn 83.3 mg/g. This study presents a remedial alternative to traditional processes, which may allow the development of methodologies and strategies related to the cleanup of sites contaminated with various metals.