【摘要】 研究了用D001阳离子交换树脂从废水中吸附Cr(Ⅲ),探讨了吸附过程热力学和动力学。结果表明:Redlich-Peterson模型能很好地描述吸附平衡过程;热力学参数ΔG<0,ΔH>0,ΔS>0,表明树脂吸附Cr(Ⅲ)是自发、吸热和熵增过程;吸附过程符合准二级动力学模型;反应活化能为27.45kJ/mol,吸附过程受颗粒扩散控制。更多还原

【Abstract】 Adsorption of Cr(Ⅲ)from wastewater using cation exchange resin D001 was reseached.The thermodynamics and kinetics of adsorption process were investigated.The results show that the Redlich Peterson model can use to describe the adsorption process.The thermodynamics parameters indicate that the adsorption process is spontaneous,endothermic and adding entropy.The adsorption rate follows the pseudo-second-order kinetics model with the activation energy of 27.45kJ/mol.The kinetics experiment results show the intraparticle diffusion is the adsorption process rate-limiting step.更多还原