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Biosorption Of Chromium (Vi) By A Mutated Strain Of Bacillus Cereus M116, Subham Paul, Debabrata Bera, Lalitagauri Ray
Biosorption Of Chromium (Vi) By A Mutated Strain Of Bacillus Cereus M116, Subham Paul, Debabrata Bera, Lalitagauri Ray
Journal of Hazardous Substance Research
The removal of chromium, a highly toxic metal causing environmental pollution from dilute aqueous solution, was studied in the present work using growing and washed cells of a mutant strain of Bacillus cereus (M116) isolated from tannery waste. Particularly, the effects of pH, temperature, metal ion concentration and contact time on removal of chromium werestudied. About 40% chromium removal, was observed by growing cells of the selected strain at pH 6.5, temperature 30o±1oC, inoculum size 3%, medium volume 50 ml/250 ml Erlenmeyer flask, and initial chromium concentration 50 ppm. Usingresting cells 98.02% and …
Bioaccumulation Of Pb(Ii) From Aqueous Solutions By Bacillus Cereus M1 16, L. Ray, S. Paul, D. Bera, P. Chattopadhyay
Bioaccumulation Of Pb(Ii) From Aqueous Solutions By Bacillus Cereus M1 16, L. Ray, S. Paul, D. Bera, P. Chattopadhyay
Journal of Hazardous Substance Research
Because of the severity of heavy metal contamination and potential adverse health impact on the public, tremendous efforts have been made to purify waters containing toxic metal ions. Biosorption is presented as an alternative to traditional physicochemical means for removing toxic metals from groundwaters and wastewaters. Removal of lead from solution was studied using growing cells and washed cells of Bacillus cereus M116. The removal of Pb(II) ions with growing cells was maximum (85%) when initial lead concentration was 50 mg/L. Other process conditions were optimized. These were volume of medium: 40 ml in a 250-ml Erlenmeyer …
Biosorption Of Pb(Ii) By Bacillus Cereus M1 16 Immobilized In Calcium Alginate Gel, S. Paul, D. Bera, P. Chattopadhyay, L. Ray
Biosorption Of Pb(Ii) By Bacillus Cereus M1 16 Immobilized In Calcium Alginate Gel, S. Paul, D. Bera, P. Chattopadhyay, L. Ray
Journal of Hazardous Substance Research
Biosorption is an alternative to traditional physicochemical means for removing toxic metals from ground and wastewaters. Biosorption of Pb(II) ion from solution was studied using Bacillus cereus M116 immobilized in calcium alginate gel in batch mode, and optimum conditions were determined. The experimental results showed that the immobilized bacterial strain was effective in removing Pb(II) ion from solution. The uptake of metal was very fast initially, and equilibrium was attained within 270 min. It was found that the overall adsorption process was best described by pseudo second-order kinetics. Intra-particle diffusion was not the only rate determining step. The sorption data …