Biosorption of Metamizol Sodium By Live Activated Sludge

Abstract

Biosorption, is the important part of abiotic removal for many chemicals during the biological treatment. In this study, the adsorption properties of the activated sludge (0.5 g and 1.0 g) on veterinary pharmaceutical that is metamizol sodium has been investigated. The biosorption of metamizol sodium on live activated sludge was investigated in a batch system. The metamizol sodium biosorption was fast and equilibrium was attained within 10 minutes. The results of the equilibrium experiments have been applied Langmuir and Freundlich models and data fitted better to Freundlich isotherm model (R=0.96 for 0.5 g and R=0.93 for 1.0 g) compared to the Langmuir model for metamizol sodium. Gibbs free energy values were found to be 1.866 kj/mol for 0.5 g adsorbent and 4.657 kj/mol for 1.0 g adsorbent and indicating the not spontaneity of the system.