在油性污泥的水热处理过程中,对油和固体之间的相互作用有了新的见解
Qi Li1, Dejun Sun2, Feng Chen2
1Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, Shandong 250100, PR China; Tianjin Key Laboratory of Tertiary Oil Recovery and Oilfield Chemistry Enterprises, Oil Production Technology Institute, Dagang Oilfield Company, PetroChina, Tianjin 300280, PR China.
Journal of hazardous materials
|April 24, 2024
概括
油性污泥 (OS) 的水热处理 (HT) 增加了油固体相互作用,使洗变得困难. 一种新的脱方法有效地从热油污泥 (HOS) 中去除残留油.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 水热处理 (HT) 有效地减少了油性污泥 (OS) 的体积,但使后续洗复杂化.
- 水热油性污泥 (HOS) 呈现油和固体之间的相互作用增加,这给分离带来了挑战.
研究的目的:
- 调查HT对OS组成和特性的影响.
- 阐明HOS洗困难背后的原因.
- 开发一种有效的方法来清洁HOS.
主要方法:
- 在HT之前和之后分析水,油和固体成分.
- 使用X射线光电子谱学 (XPS) 进行化学变化的表征.
- 应用多二硫酸 (DBSA) 辅助的乙烯除加洗.
主要成果:
- 在OS中,HT降低了水含量,但增加了树脂和青.
- 在HT (凝结,氧化) 过程中的化学反应通过含氧组和石桥增强了油固体的结合.
- 在HOS中减少的固体颗粒大小增加了油固体接触面积.
- 脱显著减少了油固体相互作用,促进了洗.
- 这种新方法在HOS.中实现了低于0.34%的残留油含量.
结论:
- 由HT引起的化学和物理变化使得HOS难以清洗.
- 用DBSA辅助的除是一种有前途的技术,用于处理经过气候变化的油性污泥.
- 开发的方法为油性污泥的整治提供了有效的解决方案.
相关概念视频
Entropy and Solvation
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ ≥ 15); an...
Microbial Bioremediation of Hydrocarbons
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to physical or...


