Oscillatoria anguistissima: a promising Cu2+ biosorbent.
Oscillatoria anguistissima rapidly adsorbs Cu2+ from aqueous solution. The adsorption of Cu2+ followed Freundlich Isotherm, and the amount of Cu2+ removed from solution increased with increasing Cu2+ concentration. The adsorption is pH dependent, and maximum Cu2+ removal occurs at pH 5. Of the various pretreatments, HCl treatment of the biomass increased the capacity for Cu2+ removal. Presence of Mg2+ and Ca2+ resulted in decline in the Cu2+ adsorption capacity of Oscillatoria cells. This species could also effectively remove Cu2+ from mine water containing 68.4 microg/ml of Cu2+ at pH 3.45.
Ahuja
P
P
Department of Microbiology, University of Delhi, South Campus, Benito Juarez Road, New Delhi-110021, India.
Gupta
R
R
Saxena
R K
RK
D000327:Adsorption; D003300:Copper / Q000302:isolation & purification / Q000378:metabolism*; D000458:Cyanobacteria / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism*
D014874:Water Pollutants, Chemical; D003300:Copper