Biosorption of Lead by Pleurotus florida and Trichoderma viride.
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Date
2013-01
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Abstract
Aims: The objective of the work is to remove Pb2+ by Pleurotus florida and Trichoderma
viride in batch studies and to study the kinetics and adsorption isotherm of Pb2+
adsorption by fungal species and to determine the desorption performance by suitable
desorbing agents.
Study Design: Experimental study.
Place and duration of the study: This work was carried out at Department of
Biotechnology, Government College of Technology, Coimbatore, Tamil Nadu, and India
for a period of five months.
Methodology: The polluted sample was collected from Valankulam lake, Coimbatore.
The biomass of Pleurotus florida and Trichoderma viride were used as adsorbents.
Atomic Absorption Spectrophotometer was used to quantify Pb2+ concentration. The
optimum conditions of pH, adsorbent dose and contact time for biosorption were
determined.
Results: Maximum adsorption of Pb2+ for Trichoderma viride and Pleurotus florida were
observed at a pH of 6 and 7 respectively. The optimum quantities of adsorbent required
for the removal of Pb2+ were 0.2g for both the organisms. Adsorption of Pb2+ was found to
reach equilibrium in 1 h and 1.5 h for Pleurotus florida and Trichoderma viride
respectively.
Conclusion: Hence, Pleurotus florida and Tricoderma viride are suitable adsorbents for
the removal of Pb2+ from effluents. This methodology can be used for the removal of lead from waste water before its disposal.
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Keywords
Biosorption, toxic heavy metals, adsorbent, effluent
Citation
Prasad A S Arun, Varatharaju G, Anushri C, Dhivyasree S. Biosorption of Lead by Pleurotus florida and Trichoderma viride. British Biotechnology Journal. 2013 Jan; 3(1): 66-78.