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Brown marine algae turbinaria conoides as biosorbent
for Malachite green removal: Equilibrium and kinetic modeling |
| R. RAJESH KANNAN,M. RAJASIMMAN,N. RAJAMOHAN,B. SIVAPRAKASH, |
| Environmental Engineering
Laboratory, Department of Chemical Engineering, Annamalai University,
Annamalai Nagar-608 002, Tamil Nadu, India; |
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Abstract In this study, the biosorption of Malachite green (MG) onto Turbinaria conoides, brown marine algae, was studied with respect to initial pH, temperature, initial dye concentration, and sorbent dosage. The optimum initial pH and temperature values for MG removal were found to be 8.0 and 30°C, respectively. Sorbent dosage was found to strongly influence the removal of MG. Equilibrium studies were carried out to test the validity of the Langmuir (qmax = 66.6 mg/g and b = 0.526 mL mol/L) and the Freundlich (n = 1.826 and K = 3.751 mg/g) isotherms. The kinetic studies indicated the validity of the pseudo first-order and second-order equation.
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| Keywords
Malachite green (MG)
Turbinaria conoides
marine algae
equilibrium studies
biosorption
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Issue Date: 05 March 2010
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