The optimum conditions for biosorption of Pb(II) and Ni(II) from aqueous solution were investigated, by using living and nonliving Pseudomonas fluorescens and Bacillus pumilus isolated from wastewater treatment plant. It was found that the optimum pH for Pb(II) removal by living and nonliving cells was 6.0, while 7.0 for Ni(II) removal. At the optimal conditions, metal ion biosorption was increased as the initial metal concentration increased. The binding capacity by living cells is significantly higher than that of nonliving cells at tested conditions. The maximum biosorption capacities for lead and nickel by using Ps. fluo-rescens and B. pumilus were 77.6, 91.4 and 65.1, 73.9 mg/g, respectively. The results of bio-sorption time and desorption experiments suggested that Pb(II) and Ni(II) uptake by the living bacterial biomass might be enhanced by intracellular accumulation.
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IBILCE UNESP, Biopolymers Lab, BR-15054000 Sao Jose Do Rio Preto, SP, BrazilIBILCE UNESP, Biopolymers Lab, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
da Silva, Leandro Jorge
Pinto, Fernanda de Rezende
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FCAV UNESP, BR-14884900 Jaboticabal, SP, BrazilIBILCE UNESP, Biopolymers Lab, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
Pinto, Fernanda de Rezende
do Amaral, Luiz Augusto
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FCAV UNESP, BR-14884900 Jaboticabal, SP, BrazilIBILCE UNESP, Biopolymers Lab, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
do Amaral, Luiz Augusto
Garcia-Cruz, Crispin Humberto
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IBILCE UNESP, Biopolymers Lab, BR-15054000 Sao Jose Do Rio Preto, SP, BrazilIBILCE UNESP, Biopolymers Lab, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
机构:
Univ Lampung, Dept Chem, Fac Math & Nat Sci, Bandar Lampung 35145, IndonesiaUniv Lampung, Dept Chem, Fac Math & Nat Sci, Bandar Lampung 35145, Indonesia
Suharso
Buhani
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Univ Lampung, Dept Chem, Fac Math & Nat Sci, Bandar Lampung 35145, IndonesiaUniv Lampung, Dept Chem, Fac Math & Nat Sci, Bandar Lampung 35145, Indonesia