酸活化坡缕石制备重金属钝化材料的研究  

Study on the Function of Passivant for Heavy Metals with Palygorskite Modified by Acid

作　　者：陶玲[1,2] 杨欣 颜子皓 王玉君 任珺[1,2] 

机构地区：[1]兰州交通大学环境与市政工程学院环境生态研究所,甘肃兰州730070 [2]兰州坤仑环保科技有限公司,甘肃兰州730070

出　　处：《非金属矿》2018年第1期11-14,共4页Non-Metallic Mines

基　　金：国家自然科学基金(51668034)

摘　　要：坡缕石原矿经粉碎、筛分、酸活化处理后得到土壤重金属钝化材料。研究了不同酸活化条件下坡缕石作钝化剂对土壤中重金属Cu、Zn钝化容量的影响,以及对玉米中重金属Cu、Zn富集含量的影响。结果表明,酸活化坡缕石作钝化剂对土壤中Cu、Zn的最大钝化容量分别为17.44 mg/g和13.96 mg/g,相比原矿提高了8.81和2.94倍。酸活化坡缕石作钝化剂对玉米植株富集Cu、Zn的最小含量分别为0.207mg/g和0.480 mg/g,相比原矿降低了64.12%和51.42%。同时挑选出3种最佳酸活化坡缕石重金属钝化剂。Palygorskite was crushed, screened, acid-modified, and the finished product is a heavy metal passivation material for the soil. The effects of palygorskite deactivation on the Cu and Zn passivation capacity of heavy metals in soil under different acid activation conditions were studied, and the effects of palygorskite on the contents of heavy metals Cu and Zn in maize were studied. The results showed that, the maximum passivation capacity of acid-modified palygorskite for soil Cu and Zn was 17.44 mg/g and 13,96 mg/g respectively, which was 8.81 and 2.94 times higher than that of the palygorskite. Acid-modified palygorskite passivating agent in maize enrichment of Cu and Zn minimum content of 0.207 mg/g and 0.480 rag/g, compared with the palygorskite decreased by 64.12% and 51.42%. At the same time, 3 kinds of optimum acid activated palygorskite heavy metal passivating agent were selected.

关 键 词：酸活化 坡缕石 重金属 钝化 

分 类 号：TB333[一般工业技术—材料科学与工程] X53[环境科学与工程—环境工程]