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2026, 01, v.56 66-75
壳聚糖颗粒协同表面活性剂高效乳化分散海洋溢油
基金项目(Foundation): 国家自然科学基金项目(22172149); 山东省泰山学者基金项目(tsqn202211053)资助~~
邮箱(Email): liym@ouc.edu.cn;
DOI: 10.16441/j.cnki.hdxb.20240396
摘要:

化学分散作为一种快速处理溢油的有效方法,被广泛应用于全球海洋溢油污染事故中。然而,由于传统化学分散剂的毒性和难降解性,有必要开发环境友好型溢油分散剂作为替代品。本文采用离子凝胶技术合成壳聚糖微颗粒(CS-TPP),并将其与非离子表面活性剂Tween 80、阴离子表面活性剂双(2-乙己基)磺基丁二酸钠(AOT)和有机溶剂二丙二醇丁基醚(DPNB)复配,开发出一种毒性更低、乳化分散性能更强的新型溢油分散剂。与模拟Corexit 9500A的乳化性能相比,该溢油分散剂具有更好的分散效果和更高的乳化效率,其分散的乳液静置30 s后的乳化率为72.3%±1.6%,10 min后为35.6%±2.6%。此外,本文阐述了海水温度和NaCl浓度对乳液稳定性的影响机制,揭示了CS-TPP颗粒和表面活性剂对溢油的协同乳化机理。这种环保型溢油分散剂可降低传统化学分散剂对环境和生物的危害,提高海洋溢油的乳化效率,有望成为溢油修复的可行替代品。

Abstract:

As an effective approach to quickly respond to oil spills, chemical dispersion is applied in the marine environment worldwide. However, due to the toxicity and limited biodegradation of traditional chemical dispersants, it is necessary to develop environmental-friendly oil spill dispersants as substitutes. In this research, chitosan microparticles(CS-TPP) were synthesized by ionic gel technology and compounded with nonionic surfactant Tween 80, anionic surfactant bis(2-ethylhexyl) sulfosuccinate sodium salt(AOT) and organic solvent dipropylene glycol butyl ether(DPNB) to develop a novel oil spill dispersant with lower toxicity and greater biodegradability. Compared with the emulsification performance of the simulated Corexit 9500A, this oil spill dispersant exhibited better emulsification effect and higher emulsion stability, with emulsification ratios of 72.3%±1.6% after 30 s and 35.6%±2.6% after 10 min of the dispersed emulsion. Furthermore, the mechanism by which seawater temperature and NaCl concentration affect emulsion stability was elaborated. And the mechanism of the synergistic emulsification of CS-TPP particles and surfactants on the oil spill was revealed. This novel oil spill dispersant can significantly reduce the environmental and biological hazards of pure chemical dispersants. It is expected to be a feasible alternative for oil spill remediation.

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基本信息:

DOI:10.16441/j.cnki.hdxb.20240396

中图分类号:X55

引用信息:

[1]杜杰,陈大凡,董丽美,等.壳聚糖颗粒协同表面活性剂高效乳化分散海洋溢油[J].中国海洋大学学报(自然科学版),2026,56(01):66-75.DOI:10.16441/j.cnki.hdxb.20240396.

基金信息:

国家自然科学基金项目(22172149); 山东省泰山学者基金项目(tsqn202211053)资助~~

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