几种表面活性剂洗脱修复苊污染黑土研究  

ELUTION OF ACENAPHTHENE FROM BLACK SOIL BY SEVERAL SURFACTANTS

作　　者：许娇娇[1] 李君[1] 符发娥 肖鹏飞[1] 

机构地区：[1]东北林业大学林学院,哈尔滨150040

出　　处：《环境工程》2016年第2期175-179,共5页Environmental Engineering

基　　金：国家自然科学基金项目(41201307);中央高校基本科研业务费专项资金项目(DL13CB12);人力资源与社会保障部留学人员科技活动择优资助项目

摘　　要：采用批量平衡振荡法研究了几种阴离子和非离子表面活性剂在单一使用和混合使用条件下对苊污染黑土的洗脱作用及影响因素。结果表明:4种表面活性剂对苊洗脱率的大小顺序为SDBS>SDS>Triton X-100>Tween40,且浓度越大,洗脱效果越好。将SDBS和Triton X-100按一定质量比例混合后可大幅度提高苊的洗脱率,不同质量比的苊洗脱率大小顺序为1∶9>1∶3>9∶1>1∶1>3∶1。水土比为20∶1的条件下,SDBS对苊污染黑土洗脱能力最高,15∶1时次之,10∶1时最低。NaCl和MgCl_2在低浓度条件下即可大幅度降低SDBS对黑土中苊的洗脱率。菲-苊混合污染土壤中,菲的存在使表面活性剂对苊的洗脱率下降。The elution of PAH acenaphthene from the black soil was investigated using single and mixed surfactants. The results showed that the elution rates sequence of acenaphthene from black soil was SDBS SDS Triton X-100 Tween40,and elution rates increased with the increasing of the surfactants＇ concentration. The elution efficiency of acenaphthene by the mixed SDBS and Triton X-100 could be enhanced,compared with the single surfactant,and SDBS / Triton X-100 mass ratio sequence for elution capability was 1∶ 9 1∶ 3 9∶ 1 1∶ 1 3∶ 1. The elution rate of acenaphthene is larger when the water /soil ratio was 20 ∶ 1 than that when the water / soil ratios were 15 ∶ 1 and 10 ∶ 1. The inorganic salts Na Cl and MgCl_2 could decrease removal of acenaphthene form black soil by SDBS and Triton X-100 at low concentration. The removal of acenaphthene by SDBS and Triton X-100 could be decreased by addition of phenanthrene into black soil.

关 键 词：表面活性剂 苊 黑土 洗脱 土壤修复 

分 类 号：X53[环境科学与工程—环境工程]