globalchange  > 过去全球变化的重建
DOI: 10.1016/j.marpolbul.2015.11.012
Scopus记录号: 2-s2.0-84982840989
论文题名:
Efficient dispersion of crude oil by blends of food-grade surfactants: Toward greener oil-spill treatments
作者: Riehm D.A.; Neilsen J.E.; Bothun G.D.; John V.T.; Raghavan S.R.; McCormick A.V.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 101, 期:1
起始页码: 92
结束页码: 97
语种: 英语
英文关键词: Crude oil ; Dispersant ; Lecithin ; Oil spill ; Tween 80
Scopus关键词: Crude oil ; Dispersions ; Ethanol ; Lecithin ; Oil spills ; Oils and fats ; Phase interfaces ; Solvents ; Surface active agents ; Dispersants ; Hydrophobic solvent ; Oil spill dispersants ; Oil water interfaces ; Solvent composition ; Solvent ratios ; Surfactant concentrations ; Tween 80 ; Organic solvents ; alcohol ; octane ; octanol ; petroleum ; phosphatidylcholine ; polysorbate 80 ; solvent ; surfactant ; petroleum ; polysorbate ; surfactant ; water pollutant ; concentration (composition) ; crude oil ; dispersion ; oil pollution ; oil spill ; pollution control ; surfactant ; water treatment ; analytical parameters ; Article ; chemical composition ; concentration response ; dispersant oil ratio ; dispersion ; hydrophilicity ; L:T ratio ; miscibility ; oil spill ; surfactant solvent ratio ; analysis ; chemistry ; ecosystem restoration ; oil spill ; theoretical model ; water pollutant ; Environmental Restoration and Remediation ; Ethanol ; Lecithins ; Models, Theoretical ; Petroleum ; Petroleum Pollution ; Polysorbates ; Solvents ; Surface-Active Agents ; Water Pollutants, Chemical
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science ; Earth and Planetary Sciences: Oceanography ; Environmental Science: Pollution
英文摘要: Effectiveness of oil spill dispersants containing lecithin/Tween 80 (L/T) blends in ethanol was measured as a function of L:T ratio, surfactant:solvent ratio, solvent composition, and dispersant:oil ratio (DOR) using baffled flask dispersion effectiveness tests. Optimal L:T ratios are between 60:40 and 80:20 (w/w); at higher L:T ratios, effectiveness is limited by high interfacial tension, while at lower L:T ratios, insufficient lecithin is present to form a well-packed monolayer at an oil-water interface. These optimal L:T ratios retain high effectiveness at low DOR: 80:20 (w/w) L:T dispersant is 89% effective at 1:25 DOR (v/v) and 77% effective at 1:100 DOR (v/v). Increasing surfactant:solvent ratio increases dispersant effectiveness even when DOR is proportionally reduced to keep total surfactant concentration dosed into the oil constant. Replacing some of the ethanol with octane or octanol also increases dispersant effectiveness, suggesting that ethanol's hydrophilicity lowers dispersant-oil miscibility, and that more hydrophobic solvents would increase effectiveness. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86527
Appears in Collections:过去全球变化的重建
全球变化的国际研究计划

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作者单位: Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, United States; Department of Chemical Engineering, University of Rhode Island, 16 Greenhouse Road, Kingston, RI, United States; Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, LA, United States; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD, United States

Recommended Citation:
Riehm D.A.,Neilsen J.E.,Bothun G.D.,et al. Efficient dispersion of crude oil by blends of food-grade surfactants: Toward greener oil-spill treatments[J]. Marine Pollution Bulletin,2015-01-01,101(1)
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