Influence of an aerobic selector on copper and hexavalent chromium biosorption by activated sludge
Date
2002-10
Authors
Colby, Christian D.
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
The influence of an aerobic selector on biosorption of Cu and Cr(VI) by activated sludge was studied. In-vitro batch adsorption tests were performed using sludge harvested from bench-scale activated sludge systems. Metal biosorption by activated sludge was rapid with equilibrium usually reached within an hour. Adsorption behaviour closely followed a Freundlich isotherm model. Experimental data suggested that an aerobic selector increased the biosorption of the metal ions by activated sludge, confirming observations by others in a similar study but with different heavy metals. Freundlich isotherms indicated that the biosorption capacity of activated sludge was increased by 15% for Cu and 30% for Cr(VI). Activated sludge from both systems had a greater biosorption capacity for Cu than for Cr(VI). The effects of pH and sludge concentration were also investigated. The results indicate that these parameters may influence the biosorption characteristics of activated sludge.
Description
Keywords
Activated sludge, Activated sludge, Zoogloea ramigera, Adsorption, Biosorption, Copper, Isotherms, pH effects, Sewage sludge, Aerobic selector, Biosorption, Extracellular polymers, Heavy metals, Zoogloea ramigera, Aerobic process, Heavy metal, Wastewater, Water treatment, Biotechnology & applied microbiology, Chemistry, Engineering
Citation
Alkan, U. vd. (2002). "Influence of an aerobic selector on copper and hexavalent chromium biosorption by activated sludge". Journal of Chemical Technology and Biotechnology, 77(10), 1141-1148.