应用化学 ›› 2025, Vol. 42 ›› Issue (2): 230-237.DOI: 10.19894/j.issn.1000-0518.240272

• 研究论文 • 上一篇    下一篇

聚醚硫酸钠溶液对染料污染土壤中染料的洗脱作用

张永金1, 史立文2, 邹欢金2, 周卓愉1, 刘建益1, 胡学一1(), 夏咏梅1   

  1. 1.江南大学化学与材料工程学院,无锡 214122
    2.赞宇科技集团股份有限公司,杭州 310030
  • 收稿日期:2024-08-24 接受日期:2024-12-22 出版日期:2025-02-01 发布日期:2025-03-14
  • 通讯作者: 胡学一
  • 基金资助:
    江苏省产学研合作项目(BY2021552);赞宇科技集团赞宇科研基金对外开放项目(24-KF-ZYJJ-03)

Elution Effect of Sodium Polyether Sulfate Solution on Dyes from Dye-Contaminated Soil

Yong-Jin ZHANG1, Li-Wen SHI2, Huan-Jin ZOU2, Zhuo-Yu ZHOU1, Jian-Yi LIU1, Xue-Yi HU1(), Yong-Mei XIA1   

  1. 1.School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China
    2.Zanyu Technology Group Co. ,Ltd. ,Hangzhou 310030,China
  • Received:2024-08-24 Accepted:2024-12-22 Published:2025-02-01 Online:2025-03-14
  • Contact: Xue-Yi HU
  • About author:xueyihu@jiangnan.edu.cn
  • Supported by:
    the Industry-University-Research Collaboration Project of Jiangsu Province(BY2021552);the Zanyu Research Fund (Open Collaborative Project) of Zanyu Technology Group Co., Ltd(24-KF-ZYJJ-03)

摘要:

工业染料的污染有害于土壤生态,非离子表面活性剂对染料的脱附力高但在土壤中的残留率也高,阴离子表面活性剂对非阳离子染料的脱附力低但在土壤中的残留率也低。 将二者复配可以保留各自的优点,而集二者结构特征为一身的阴非离子表面活性剂对土壤中染料的洗脱作用以及修复土壤作用尚待探究。 本实验以甲基橙和茜素红分别构建疏/亲水性染料的污染土壤模型,以经典的阴非离子表面活性剂十二烷基聚氧乙烯硫酸钠(SLES)为对照,研究一种新型阴非离子表面活性剂壬基环己醇聚氧乙烯醚硫酸钠(NCEO5S)和对污染土壤中的染料洗脱作用。 结果表明,pH=8,污染土壤与NCEO5S固液质量比为1∶10(g/g),25 ℃下质量分数1%的NCEO5S溶液对污染土壤中甲基橙和茜素红的去除率分别可达94.34%、97.66%,而相同条件下的SLES溶液对2种土壤中污染物的去除率分别为88.61%和91.23%。 NCEO5S表现出了比SLES略微优异的洗脱污染土壤中染料的能力,而且残留量较低。

关键词: 壬基环己醇聚氧乙烯醚硫酸钠, 十二烷基聚氧乙烯醚硫酸钠, 染料, 土壤, 洗脱

Abstract:

The contamination caused by industrial dyes is harmful to soil ecology. Nonionic surfactants exhibit high desorption ability towards dyes but leave a high residual content in soil, and anionic surfactants present lower elution efficiency on dyes other than cationic ones but remain less in soil. The combination of these two types of surfactants could retain the advantages of both, whereas the anionic-nonionic surfactant that combines the structural characteristics of both requires further exploration for its elution and remediation effect in dye-contaminated soil remediation. In this experiment, the hydrophobic/hydrophilic dye-contaminated soil models were established using methyl orange and alizarin red, and the performance of a novel anionic-nonionic surfactant, sodium nonylcyclohexanol ethoxysulfate(NCEO5S) in dye elution from contaminated soil was investigated, with a classic surfactant sodium laureth sulfate (SLES) as a control. The results indicate that the elution efficiency for methyl orange and alizarine red from contaminated soil reached 94.34% and 97.66% respectively, with 1% of NCEO5S solution and solid-liquid mass ratio of 1∶10(g/g) at pH 8 and 25 ℃. Under the same conditions, the elution efficiencies of SLES were 88.61% and 91.23%, respectively. The results reveal that NCEO5S exhibited slightly better ability to elute dyes from contaminated soil than SLES, with less residue remaining in soil.

Key words: Sodium nonylcyclohexanol ethoxysulfate, Sodium laureth sulfate, Dye, Soil, Elution

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