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Journal of Advances in Environmental Health Research، جلد ۲، شماره ۲، صفحات ۱۲۶-۰
عنوان فارسی
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عنوان انگلیسی Removal of nickel and total chromium using Escherichia coli biofilm supported on clinoptilolite
چکیده انگلیسی مقاله - Biofilm is communities of microorganisms attached to the surface and is able to concentrate metal species within their cell structure. Therefore, the aim of this study was to produce Escherichia coli biofilm on zeolite (clinoptilolite) and evaluate its ability for nickel (Ni) and chromium (Cr) adsorption from aqueous solutions. A laboratory-scale batch model was used for biodsorption assay. The effect of initial metal concentrations and pH on the removal efficiency was studied. Two isotherm equations were used for analyzing the experimental data. The results showed that Ni uptake by biofilm were higher than Cr. The biosorption process was best described by the Langmuir model. Fourier transform infrared confirmed that there are some functional groups on the biomass surface that may interact with the metal ions. It is concluded that the biofilm is very promising for the removal of metal ions from aqueous solution and hence may be encourage the utilization of biofilm in environmental applications.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله رویا ابراهیمی | roya ebrahimi
kurdistan environmental health research center, kurdistan university of medical sciences, sanandaj, iran


شیوا زندی | shiva zandi
kurdistan environmental health research center, kurdistan university of medical sciences, sanandaj, iran


فردین غریبی | fardin gharibi
deputy of research, kurdistan university of medical sciences, sanandaj, iran
نشانی اینترنتی http://jaehr.muk.ac.ir/index.php/jaehr/article/view/109
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article(s)
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