大洋锰结核氨浸渣脱硫产物处理含镉废水的研究  

Cd2+ adsorption from aqueous solutions by desulfurization products of manganese nodule leached residue

作　　者：汪伦[1] 陈天虎[1] 常冬寅[1] 刘海波[1] 陈冬[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《岩石矿物学杂志》2011年第6期1001-1006,共6页Acta Petrologica et Mineralogica

基　　金：国家973预研项目(2011CB411904);国家自然科学基金资助项目(41072035)

摘　　要：研究了大洋锰结核氨浸渣脱硫产物去除废水中镉离子的多种影响因素,如接触时间、脱硫产物粒径、溶液pH值、初始镉离子浓度和吸附剂量。并利用X射线粉末衍射(XRD)、场扫描电镜(SEM)、X射线光电子能谱(XPS)对材料和产物进行了表征。结果表明减小脱硫产物粒径、增大吸附剂量等有利于提高去除效果;大洋锰结核氨浸渣脱硫产物去除水中镉离子是基于离子交换反应的原理:MnS+Cd2+→CdS+Mn2+。In this study,the removal of Cd2＋ from aqueous solutions by desulfurization products of manganese nodule leached residue was carried out in consideration of the influence of various parameters,such as contact time,solution pH and initial metal concentration,and adsorbent quantity.X-ray diffraction（XRD）,scanning electron microscopy（SEM）and X-ray photoelectron spectroscopy（XPS）were used to characterize the materials and products.The adsorption of Cd2＋ increased with the increase of the adsorbent in solution,and the reduction of the particle size also increased the removal efficiency.The removal of Cd from aqueous solution by desulfurization products of manganese nodule leached residue was based on the ion exchange reaction principle MnS＋Cd2＋→CdS＋Mn2＋.

关 键 词：大洋锰结核氨浸渣 脱硫产物 镉 离子交换 

分 类 号：P579[天文地球—矿物学]