Biosorption of methyl orange from aqueous solution using cucurbita pepo leaves powder

This paper investigates the biosorption of methyl orange from aqueous solution on cucurbita pepo leaves powder. The batch studies were carried out for the contact time, (5-60 min), biosorbent dosage (0.05-0.5 g), pH (2-9), initial concentration of dye (10-50 mg/L) and temperature, (283-323 degrees K). The isotherms for the present study are Freundlich, Langmuir and Temkin. Of these isotherms, the Freundlich isotherm was best fitted. The kinetics were studied with pseudo first and second order. Biosorption kinetics of cucurbita pepo leaves were well correlated with pseudo second order.