화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.33, 122-130, January, 2016
DOI10.1016/j.jiec.2015.09.028  Export Citation
Application of new amphiphilic ionic liquid based on ethoxylated octadecylammonium tosylate as demulsifier and petroleum crude oil spill dispersant
Ayman M. Atta1, 2, †, Hamad A. Al-Lohedan1, 3, Mahmood M.S. Abdullah1, 3, and Shymaa M. ElSaeed2
  • 1Surfactants Research chair, Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
  • 2Petroleum Application Department, Egyptian Petroleum Research Institute, Cairo 11727, Egypt
  • 3, Saudi Arabia
E-mail:
This work reports the synthesis and application of amphiphilic ionic liquid (IL) in the petroleum field. The ionic liquid was synthesized by etherification of octadecylamine with tetraethylene glycol followed by quaternization with p-toluene sulfonic acid. The chemical structure was confirmed by NMR spectroscopy. The surface activity, aggregation, adsorption, and the solubility of the ethoxylated octadecylammonium tosylate were investigated. The interfacial parameters between IL aqueous solution and crude oil emulsions were determined from interfacial tension measurement. The results showed the dependence of interfacial tension on the concentration, crude oil emulsion composition and chemical structure of the prepared amphiphiles. The mechanism of aggregation and adsorption ethoxylated octadecylammonium tosylate was proposed and confirmed at different interfaces. The demulsification and oil spill dispersion efficiencies were investigated at different amphiphile concentrations. The performance of amphiphilic ILs revealed that their demulsification efficiency reached 100% and the settling time required for efficient separation decreased with increment of water contents of crude oil emulsions. Moreover, the prepared amphiphilic ILs achieved oil spill dispersion efficiency more than 80% at surfactant oil ratio (1:25).
Keywords:Amphiphiles;Ionic liquid;Aggregation;Adsorption;Demulsifiers
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