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The Adsorption Properties of Ciprofloxacin by KMnO4 Modified Durio zibethinus Murr Shells

Through the experiment of Ciprofloxacin (CIP) adsorption by KMnO4 modified Durio zibethinus Murr Shell (KDS), the best condition, adsorption kinetics and thermodynamic characteristics were studied. The isotherm parameters were estimated by linear regression analysis with Langmuir isotherm model, Temkin isotherm and Freundlich isotherm model. The equilibrium process was described well by the Freundlich isotherm model, which indicated that the adsorption thermodynamics of CIP on KDS is a multilayer adsorption process．The kinetics of the interactions showed better agreement with the pseudo-second-order model (R2=0.9999). This study demonstrated that KDS could be used for the removal of CIP in water treatment.