Abstract
An industrial waste fungus Rhizomucor tauricus mycelial biomass was entrapped into alginate gel liquid curing method in the presence of Ca (II) ions. The Biosorption of cadmium (II) by the entrapped live biomass and dead powdered fungal biomass has been studied in a batch system. The binding capacity of immobilized live fungal biomass was very high comparative to dead powdered fungal biomass. The effect of initial metal concentration, pH, temperature and L/S ratio on cadmium removal has been investigated. The maximum experimental biosorption capacities for entrapped live and dead powdered fungal of Rhizomucor tauricus were found to be 79.9 ? 2.2 mg Cd (II) L-1, 57.29 ? 3.4 mg Cd (II) g-1 respectively. The kinetics of cadmium biosorption was slow; approximately 75% of Biosorption takes place in 2 hours. The biosorption equilibrium data were well described by Freundlich adsorption isotherm. The FTIR results revealed that the functional groups -OH and -NH2 involved in the biosorption process.
Highlights
An industrial waste fungus Rhizomucor tauricus mycelial biomass was entrapped into alginate gel liquid curing method in the presence of Ca (II) ions
The FTIR results revealed that the functional groups -OH and -NH2 involved in the biosorption such as reverse osmosis, dialysis, gamma-ray irradiation, ultrafiltration, sorbex processes, coagulative precipitation, solvent extraction, oxidation, hydrolysis, electrolysis, chromium treatment and chromatography have been contemplated to remediate the effluents (Alguacil and Villegas, 2002; Ritchie and Bhattacharyya, 2002; Verbych et al, 2005; Grimm et al, 1998; Makhloufi et al, 2000; Matlock et al, 2002; Matlock et al, 2001; Esalah et al, 2000; Byrne et al, 1999; Menek et al, 2006; de Martins et al, 2006; Fabiani et al, 1996)
Rhizomucor tauricus is chosen as biosorbent material because it is waste industrial fungus, relatively lack of information about the sorption ability. In this investigation live immobilized and dead powdered fungal biomass of R. tauricus was used for the removal of cadmium in aqueous solution
Summary
An industrial waste fungus Rhizomucor tauricus mycelial biomass was entrapped into alginate gel liquid curing method in the presence of Ca (II) ions. Several researchers reported immobilized fungal biomass for biosorption of heavy metal ions using calcium alginate such as Lentinus sajor-caju (Bayramoglu et al, 2002), Trametes versicolor (Bayramoglu et al, 2003), Rhizopus arrhizus (Liao et al, 2004), algal cells C.vulgaris (Al-Rub et al, 2004), Tetraselmis pH adjustment of aqueous metal solutions In this investigation live immobilized and dead powdered fungal biomass of R. tauricus was used for the removal of cadmium in aqueous solution.
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