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2011-Sustainable Industrial Processing Summit
|Publisher:||Flogen Star OUTREACH|
|ISSN:||2291-1227 (Metals and Materials Processing in a Clean Environment Series)|
Natural environments are an increasing contribution of the domestic and industrial effluents that have led to the deterioration of many water bodies, making them incompatible with life. This study used aerobic bacteria isolated from environments contaminated with heavy metals and selected a consortium of bacteria that resist acid pH, to test for copper biosorption in batch and continuous system in an aerobic reactor packed with zeolite (clinoptilolite). In batch tests were performed at 50 and 100 mgCu (II)/L at ph 3-5. In the system in batches of 100 mgCu(II)/L there was no copper biosorption and 50mgCu(II)/L biosorption results were 75% with two bacterial strains. In continuous system were presented results of biosorption of up to 97% on day 50 mgCu(II)/L and to 20 mgCu(II)/L the process was maintained until 10 days at rates of 84-96%. This study showed that the concentration of copper affects the biosorption process because these organisms do not support high concentrations of copper as it showed in the study of copper toxicity because the half inhibitory concentration (IC50) was 65 mgCu(II)/L, this indicates that this biomass is not recommended to perform tests of biosorption at higher concentrations of copper.