摘要：Epichlorohydrin modified orange peel (EMOP) was used as a low-cost biosorbent to remove Malachite Green (MG) from its aqueous solution.The effects of particle size,initial solution pH,contact time,temperature,and MG concentration on the adsorption process were explored by the batch method.A method derived from the Freundlich equilibrium constant KF was used to estimate the thermodynamics.The obtained negative AG values and positive AH values demonstrated a spontaneous endothermic process of MG onto EMOP.The pseudo-second-order and the Elovich equations can well describe the kinetic data.It was concluded that chemical interaction between MG and EMOP based on electron exchange or charge sharing maybe happen besides physical adsorption in this process.The EMOP could be used as an efficient adsorbent for treating dye wastewater.
