Removal of levofloxacin from aqueous solution using rice-husk and wood-chip biochars

摘要: The potential for rice husk (RH) and wood chip (WC) biochars to remove levofloxacin (LEV) from aqueous solution was evaluated. physical chemical properties of the were characterized using various tools techniques. Furthermore, batch sorption experiments conducted determine ability LEV. pseudo-second order kinetic model described data better than pseudo-first Elovich equation because process involved both surface adsorption pore diffusion. For isotherms, Langmuir fitted Freundlich equation. maximum capacities LEV ranged 1.49 7.72 mg g(-1). Thermodynamic parameters obtained showed that onto WC biochar spontaneous exothermic, while its RH endothermic under tested conditions. A mixture 0.025 M phosphate buffer (80%, pH 3.0) acetonitrile (20%) effectively desorbed with a recovery rate up 80%. Findings this work indicate can be used as an alternative adsorbent emerging contaminants including solutions.