腐植酸三元聚合物的合成及其对土壤中Pb2+的钝化研究

The Synthesis of Humic Acid Terpolymer and Passivation to Pb2+ in Soil

采用水溶液聚合法合成了腐植酸钠,2-丙烯酰胺-2-甲基丙磺酸、丙烯酰胺三元共聚物HSAA,探讨了HSAA添加量、钝化时间和温度对污染土壤中Pb2+钝化效果的影响,结果表明:在钝化温度为45 ℃、钝化时间为48 h条件下,土壤中添加质量分数为1.0%的HSAA对Pb2+的钝化效率达到73.86%,较腐植酸增加39.69%,说明HSAA对铅污染土壤有较好的钝化修复作用。

Synthesis of the terpolymer HSAA based on sodium humate,2-acrylamide-2-methyl propionic acid and acrylamide by aqueous solution polymerization.The effects of HSAA adding amount,time and temperature on the passivation of Pb2+ in contaminated soil was investigated.The results showed that the passivation efficiency of Pb2+ was 73.86% while the relative humic acid increased 39.69% under the conditions of 45 ℃ temperature,48 h time and addition of 1.0% HSAA in soil,indicating that the HSAA has a good remediation effect on Pb contaminated soil.