Abstract - Biosorption of zinc from effluent of rubber product manufacturing


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	Publications of MRB Latest Publications MRB Digest Journal of Rubber Research 3^rd Qtr 2008 Vol 11(3) 2^nd Qtr 2008 Vol 11(2) 1^st Qtr 2008 Vol 11(1) 4^th Qtr 2007 Vol 10(4) 3^rd Qtr 2007 Vol 10(3) 2^nd Qtr 2007 Vol 10(2) 1^st Qtr 2007 Vol 10(1) 1^st Qtr 2006 Vol 9(1) 2^nd Qtr 2006 Vol 9(2) 3^rd Qtr 2006 Vol 9(3) 4^th Qtr 2006 Vol 9(4) Submit paper/article Order Form	Abstract Biosorption of Zinc from Effluent of Rubber Product Manufacturing Zinc removal from effluent of rubber product manufacturing through biosorption by four microbial species (Zoogloea ramigera, Aerobacter aerogenes, floc-forming bacteria and floc-forming yeast) was studied. Growth kinetics and exopolymer production by the species cultured on synthetic media were obtained. Studies conducted using rubber effluent with initial zinc concentration of 29 mg/L showed that the initial zinc uptake rates and equilibrium adsorption capacities achieved by the microorganisms ranged from 18.3 to 42.3 mg Zn/g biomass.min and 88 to 206 mg Zn/g biomass, respectively. A aerogenes gave the highest initial zinc uptake rate and equilibrium adsorption capacity, followed by the floc-forming yeast. Further investigation on the floc-forming yeast showed that the optimum pH for zinc adsorption by the species was 6.5.
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