【摘要】 采用共沉淀法合成了铝镁铁三元类水滑石,对水滑石对水溶液中Cr(Ⅵ)的吸附进行了分析.结果表明,温度对该类水滑石吸附Cr(Ⅵ)的影响不大;该类水滑石对Cr(Ⅵ)的吸附更遵循Freundlich等温线;吸附动力学符合拟二级动力学模型,相关性达0.999;热力学分析说明该吸附过程是吸热反应.更多还原

【Abstract】 Al/Mg/Fe/-hydrotalcite-like compounds were synthesized by coprecipitation.This hydrotalcite-like compounds were used to adsorb Cr(Ⅵ).The results suggested that the experimental data fitted well to Freundlich models.Pseudo-second-order model was found to explain the kinetics of Cr(Ⅵ) adsorption most effectively,the correlation is 0.999.Thermodynamic analysis showed the adsorption process is endothermic reaction.更多还原