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基于脂肪酸和单乙胺的环保表面活性剂,用于有效地修复漏油
Sádwa F Ribeiro1, R S Santiago-Aguiar1
1Chemical Engineering Department, Federal University of Ceara, Pici Campus, Bl. 709,Fortaleza, Ceara 60440-554, Brazil.
ACS omega
|October 13, 2025
概括
基于脂肪酸的新型表面活性剂,单乙胺/酸 (MEA-LA) 和单乙胺/油酸 (MEA-OA),显示出对环保石油泄漏清理的希望. 它们有效地分散油,并将其从毒性较低的沙子中去除,性能优于常规分散剂.
科学领域:
- 环境化学环境化学
- 绿色化学 绿色化学
- 海洋污染 海洋污染
背景情况:
- 传统的石油泄漏分散剂由于其毒性而带来环境风险.
- 在石油泄漏整治方面,迫切需要可持续和更安全的替代方案.
- 脂肪酸衍生表面活性剂提供潜在的好处,如低毒性和成本效益.
研究的目的:
- 评估两种基于脂肪酸的新型表面活性剂MEA-LA和MEA-OA在石油泄漏清理方面的有效性.
- 为了比较它们的性能与传统的分散剂,如二甲基硫酸盐 (SDS).
- 通过毒性测试来评估它们对环境的影响.
主要方法:
- 合成和表征的单乙胺/酸 (MEA-LA) 和单乙胺/油酸 (MEA-OA) 表面活性剂.
- 测量了表面张力,临界微粒度 (CMC),乳化指数和原油分散.
- 评估了从沙子中去除机油的情况,并使用*Artemia salina*进行了急性毒性测试.
主要成果:
- MEA-LA和MEA-OA显著降低了表面张力,形成了稳定的乳液,性能优于SDS.
- 这两种表面活性剂都证明了从沙子中有效地去除碳化合物 (57-61%的效率在3 × CMC).
- 毒性测定表明毒性低,LC50值>1900μg/mL,将它们归类为无毒.
结论:
- 基于脂肪酸的表面活性剂 (MEA-LA和MEA-OA) 是传统油污分散剂的有效和环保的替代品.
- 它们的低毒性和在分散和清除方面的高性能表明,它们对可持续的海洋污染控制有很大的潜力.
- 这些新型表面活性剂可以有助于减少石油泄漏对环境和社会经济的影响.
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