Biosorption of zinc (II) using Spirogyra species from electroplating effluent.
Zinc was removed from the metal plating effluent with the biosorbent consisting of filamentous algae Spirogyra sp. The sorption was pH dependent with best adsorption at pH 2.5. The metal uptake increased from 3.9% (for no dilution) to 36.8% (for 10 times dilution), indicating that sorption increased with dilution of sample. The adsorption was faster at initial contact time, gradually decreased and remains constant after certain optimum time. Percentage removal of zinc increased from 20.3% to 63.6% with increase in the temperature from 25 degrees C to 35 degrees C but further increase resulted in the decrease in adsorption. Freundlich isotherm was applied and it holds good for the adsorption data.
Bishnoi
Narsi Ram
NR
Department of Environmental Science and Engineering, Guru Jambheshwar University, Hisar-125 001, India. nrbishnoi@indiatimes.com
Bajaj
Mini
M
Sanatomba
K
K
D000327:Adsorption; D000460:Chlorophyta / Q000378:metabolism*; D004595:Electroplating; D006863:Hydrogen-Ion Concentration; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*; D015032:Zinc / Q000378:metabolism / Q000493:pharmacokinetics*
D014874:Water Pollutants, Chemical; D015032:Zinc