Journal
ELECTRONIC JOURNAL OF BIOTECHNOLOGY
Volume 8, Issue 2, Pages 162-169Publisher
UNIV CATOLICA DE VALPARAISO
DOI: 10.2225/vol8-issue2-fulltext-4
Keywords
biosorption; Cocoyam; heavy metals removal; temperature; thermodynamics of sorption; waste management
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This report is based on the investigation of the effect of temperature on the removal of Pb2+ and Cd2+ in aqueous effluent using 40 degrees C. bicolor biomass in a batch sorption process. The result showed that the most suitable sorption temperature was 40 C with maximum sorption capacities of 49.02 mg/g and 52.63 mg/g for Pb2+ and Cd2+ respectively. Various thermodynamic parameters, such as. Delta G degrees, Delta H degrees, Delta S degrees and E-a have been calculated. The data showed that the sorption process is spontaneous and exothermic in nature and that lower solution temperatures favours metal ion removal by the biomass. The findings of this investigation suggest that physical sorption plays a role in controlling the sorption rate. The sticking probability model was further employed to assess the applicability of the C. bicolor biomass as an alternative adsorbent for metal ion contaminants in aqueous system.
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