煤矸石-粉煤灰烧结砖中微量元素的浸出特征研究  

Leaching characteristics of trace elements in the sintered brick made from coal gangue and fly ash

作　　者：王明仕[1] 刘琳瑶 宋党育[1] 

机构地区：[1]河南理工大学资源环境学院,河南焦作454000

出　　处：《河南理工大学学报（自然科学版）》2016年第6期823-827,共5页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金资助项目(41272173)

摘　　要：为掌握煤矸石-粉煤灰烧结砖中微量元素的浸出特征,以煤矸石和粉煤灰为原料的烧结砖为研究对象,采用ICP-MS测定不同pH值及不同振荡时间下浸出液中微量元素(V,Co,Ni,Cu,Zn,As,Se,Pb)的质量,探讨烧结砖中微量元素在不同条件下的浸出特征及其环境效应。结果表明,烧结砖中大部分微量元素的浸出量与振荡时间成正比,与浸提剂的pH值成反比;参考地下水环境质量标准,烧结砖浸出液中Co,Ni和As元素的最大浸出量分别是III类地下水环境质量标准的1.8倍,2.8倍和4.6倍,对环境造成的潜在危害较大。In order to grasp leaching characteristics of trace elements in the sintered brick made from coalgangue and fly ash, taking sintering brick with coal gangue and fly ash of raw material as the research object ,ICP - MS is adopted to measure the content of trace elements （V , Co, Ni, Cu, Zn, As, Se, Pb） in leachingagent at different pH values and tim es, and leaching characteristics of trace elements is studied in sinteredbrick at different conditions and its environmental effects. The result showed that leaching contents of mosttrace elements in sintered brick increased with increasing soaking time and with reducing the acidity of leachingagent. Comprised with the environmental quality standard of underground water, the maximum leachingamount of Co, Ni and As were 1 .8 , 2.8 and 4. 6 times, respectively, which caused more potential harm tothe environment.

关 键 词：烧结砖 微量元素 浸出特征 环境效应 

分 类 号：X752[环境科学与工程—环境工程]