【摘要】 采用锰氧化物和氢氧化镁对天然硅藻土进行复合修饰改性,并应用于处理含Cu²⁺和Pb²⁺废水。以等温吸附模型和吸附动力学模型分析,结果证明改性硅藻土对Cu²⁺和Pb²⁺的吸附均符合Langmuir等温吸附模型,最大吸附量分别为49.09 mg/g和135.5 mg/g。采用扫描电子显微镜（SEM）和X射线衍射（XRD）等手段进行分析,结果显示改性材料具有粒径小、晶型好等特点。更多还原

【Abstract】 Diatomite was modified by manganese oxides and magnesium hydroxide and applied to adsorb Cu²⁺ and Pb²⁺ in the sewage.The models of isotherm adsorption and dynamic adsorption were utilized.The experimental results showed that using manganese oxides and magnesium hydroxide modified diatomite as a case study,its adsorption data for Cu²⁺ and Pb²⁺ was modeled,and found to be a perfect fit for the Langmuir isothermal adsorption model.For adsorption of Cu²⁺ and Pb²⁺ ,the maximal adsorption capacity reached 49.09 mg/g and 135.5 mg/g,respectively.Characterized respectively by scanning electron microscopy（SEM） and X-ray diffraction（XRD）,the modified material displayed good crystal structure and high crystallinity.更多还原