粉煤灰硬化体中Cr(Ⅵ)溶出抑制材料的研究  

Research on Material of Retention on Leachability Cr(Ⅵ) in Harden Fly Ash Cement

作　　者：韦江雄[1] 余其俊[1] 曾小星[1] 白瑞英[1] 

机构地区：[1]特种功能材料及其制备新技术教育部重点实验室

出　　处：《武汉理工大学学报》2007年第1期22-25,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50372021);教育部科学技术研究重点项目(105139)

摘　　要：利用物理活化的矿渣和白渣制备了Cr(Ⅵ)溶出抑制材料。研究了抑制材料对碳化前后粉煤灰硬化体中六价铬离子溶出的消减作用;并分析硬化体中六价铬溶出行为与孔溶液有害离子的关系。结果表明:矿渣、白渣都具有比较优异的溶出抑制能力,能有效降低粉煤灰硬化体中六价铬离子;但即使是掺抑制材料的粉煤灰硬化体,碳化后六价铬离子溶出量仍有少量的增加。Material of Retention on Leachability Cr （Ⅳ） was prepared with ground granulated blast-furnace slag（GGBFS） and ground electric steel furnace slag （GESFS）. Then, the following two aspects were carried out. （1） investigation into the reducing effect of GGBFS and GESFS on the leachability Cr （Ⅳ） in harden fly ash Cement; （2） relation between the amount of Cr （ Ⅳ ） leached from hardened fly ash and Cr （Ⅳ） concentration in the pore solution of the hardened fly ash. The results indicated that the both slags possessed excellent reducibility on leachability Cr（Ⅳ）. With the addition of the slags Cr（ Ⅳ）-con raining in hardened fly ashes, the concentration of Cr（Ⅳ ） in the solution and the leaching of Cr （Ⅳ） from hardened fly ashes was reduced, and the effect was kept stable during the investigated term.

关 键 词：矿渣 粉煤灰硬化体 溶出 六价铬离子 

分 类 号：X75[环境科学与工程—环境工程]