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Hassimi Abu Hasan,Siti Rozaimah Sheikh Abdullah,Noorhisham Tan Kofli,Shy Jay Yeoh 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.37 No.-
In this study, the interaction of pH, biomass and initial concentrations of lead (Pb) and manganese (Mn)ions in simultaneous removal of Pb and Mn were investigated using the Box–Behnken design. The resultsshowed that there was a significant interaction between pH-Pb:Mn concentrations, pH-biomassconcentration and Pb:Mn-biomass concentrations. The maximum uptake of Pb and Mn was achieved atpH 7. By increasing the Pb and Mn concentrations from 10 to 50 mg/L, the uptake capacities alsoincreased. By increasing the biomass concentration from 0.3 to 1.5 g/L, the uptakes (g/g) of both metalions by Bacillus cereus I6 was depleted. The precipitation of Pb and Mn on the surface of B. cereus I6 cellswas confirmed by energy dispersive X-ray (EDX) transmission electron microscopy (TEM), and Fouriertransform infrared (FTIR). Thus, simultaneous biosorption of Pb and Mn by isolated I6 strain can beefficiently performed under different interactions of environmental factors.