학술논문
十二烷基苯磺酸钠淋洗修复二环己胺与十二烷基苯磺酸钠复合污染土壤的研究 / Surfactant Washing for Remediation of Soil Contaminated by Dicyclohexylamine Alone or with Sodium Dodecyl Benzene Sulfonate
Document Type
Academic Journal
Author
Source
广东化工 / Guangdong Chemical Industry. 45(8):1-3
Subject
Language
Chinese
ISSN
1007-1865
Abstract
为探讨低浓度小剂量表面活性剂淋洗修复有机物与表面活性剂复合污染土壤的可行性,以十二烷基苯磺酸钠(SDBS)和二环己胺(DCHA)为研究对象进行吸附和洗脱等实验.结果表明,土壤对SDBS的吸附量随SDBS浓度升高而呈先线性增加后快速下降的趋势.无论是DCHA污染土壤还是SDBS-DCHA复合污染土壤,随着淋洗液SDBS浓度不断增大,DCHA的洗脱效率快速升高并最终趋于最大值.DCHA单独污染的土壤,SDBS浓度需要达到约2000 mg·L-1才能达到最大洗脱效率,而对于DCHA-SDBS复合污染的土壤,浓度约600 mg·L-1即可达到最佳修复效果.
To study the feasibility of using low concentration and small dose of surfactant to clean soil contaminated by mixed surfactant and organic pollutant, experiments of sorption and desorption/washing were conducted using SDBS and DCHA as representative surfactant and organic pollutant. The results showed that with increasing the concentration of SDBS, its sorption on soil initially increased and then rapidly decreased. The removal of DCHA increased and reached the maximum when SDBS was increased for both single DCHA contaminated or mixed SDBS-DCHA contaminated soil. For single DCHA contaminated soil, it required the SDBS concentration of about 2000 mg·L-1for the maximal removal of DCHA from soil if DCHA was the only contaminant. In comparison, only 600 mg·L-1of SDBC was needed for maximal DCHA removal in mixed SDBS-DCHA contaminated soil.
To study the feasibility of using low concentration and small dose of surfactant to clean soil contaminated by mixed surfactant and organic pollutant, experiments of sorption and desorption/washing were conducted using SDBS and DCHA as representative surfactant and organic pollutant. The results showed that with increasing the concentration of SDBS, its sorption on soil initially increased and then rapidly decreased. The removal of DCHA increased and reached the maximum when SDBS was increased for both single DCHA contaminated or mixed SDBS-DCHA contaminated soil. For single DCHA contaminated soil, it required the SDBS concentration of about 2000 mg·L-1for the maximal removal of DCHA from soil if DCHA was the only contaminant. In comparison, only 600 mg·L-1of SDBC was needed for maximal DCHA removal in mixed SDBS-DCHA contaminated soil.