使用体气体阿弗龙清洁油性泥:优化工艺条件和分析机制
Hongyang Ren1,2, Yongting Wu1, Jiajian Shang3
1School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|June 25, 2024
概括
与化学处理相比,合性气体阿弗朗 (CGAs) 提供了优越的油性污泥脱油方法. 这些稳定的微气泡通过增加表面积和特定的吸附机制来增强污染物去除.
科学领域:
- 环境科学与工程环境科学与工程
- 合体和表面化学
背景情况:
- 体气体 (CGAs) 具有很大的特定表面积和高表面活性,使它们适合去除污染物.
- 油性污泥由于持续的油污污染,给环境带来了挑战.
研究的目的:
- 研究CGA的结构和特性,用于从油性污泥中去除油.
- 优化CGA处理条件并阐明底层的去除机制.
主要方法:
- 准备和表征CGAs,包括液体薄膜厚度和界面张力测量.
- 使用响应表面方法来优化脱油条件.
- 使用反向光显微镜,SEM,FTIR和2D光光谱学研究CGA行为和污染物相互作用.
主要成果:
- 准备好的CGAs表现出高稳定性,液体薄膜厚度为5-10μm,界面张力低 (3.157 mN/m).
- 在最佳条件下,CGA处理的脱油率明显高于化学处理,达到96.07%.
- 表面活性剂度和温度被确定为影响脱油的最重要因素.
结论:
- 通过增加质量转移表面积和提供污染物附着点,CGAs有效地提高了脱油效果.
- 污染物经历液体膜溶解,转移到CGA液体膜的内部.
- 通过静电和疏水相互作用,CGAs特别吸附负电荷的有机化合物和芳香,促进污染物迁移.
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