Biosorption of Pb and Zn by Non-Living Biomass of Spirulina sp
Rajiv Kumar Aneja1, Gunjan Chaudhary, Sarabjeet Singh Ahluwalia
1Department of Biotechnology and Environmental Sciences, Thapar University, Patiala, 147004 Punjab India.
Abstract:
Removal of heavy metals (Pb(2+), Zn(2+)) from aqueous solution by dried biomass of Spirulina sp. was investigated. Spirulina rapidly adsorbed appreciable amount of lead and zinc from the aqueous solutions within 15 min of initial contact with the metal solution and exhibited high sequestration of lead and zinc at low equilibrium concentrations. The specific adsorption of both Pb(2+) and Zn(2+) increased at low concentration and decreased when biomass concentration exceeded 0.1 g l(-1). The binding of lead followed Freundlich model of kinetics where as zinc supported Langmuir isotherm for adsorption with their r(2) values of 0.9659 and 0.8723 respectively. The adsorption was strongly pH dependent as the maximum lead biosorption occurred at pH 4 and 10 whereas Zn(2+) adsorption was at pH 8 and 10.
More Related Videos
Related Concept Videos
Microbial Bioremediation of Uranium
Bioremediation
Microbial Leaching
Bioplastics
Microbial Bioremediation of Hydrocarbons
Microbial Bioremediation of Pesticides


