DOI: 10.1016/j.marpolbul.2014.07.062
Scopus记录号: 2-s2.0-84924086320
论文题名: Phase and sedimentation behavior of oil (octane) dispersions in the presence of model mineral aggregates
作者: Gupta A. ; Sender M. ; Fields S. ; Bothun G.D.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2014
卷: 87, 期: 1 起始页码: 164
结束页码: 170
语种: 英语
英文关键词: AOT
; DOSS
; Oil dispersion
; Oil-mineral aggregates
; Silica nanoparticles
Scopus关键词: Aggregates
; Deionized water
; Dispersions
; Drops
; Dynamic light scattering
; Emulsification
; Emulsions
; Hydrophobicity
; Light scattering
; Minerals
; Nanoparticles
; Scanning electron microscopy
; Silica
; AOT
; DOSS
; Mineral aggregate
; Oil dispersions
; Silica nanoparticles
; Thermogravimetric analysis
; docusate sodium
; octane
; sea water
; silica nanoparticle
; emulsion
; nanoparticle
; octane
; silicon dioxide
; surfactant
; adsorption
; dispersion
; hydrophobicity
; oil spill
; pollutant transport
; seawater
; sediment pollution
; surfactant
; suspended sediment
; adhesion
; adsorption
; Article
; cryogenic scanning electron microscopy
; dispersion
; dynamic light scattering
; emulsion
; hydrodynamics
; hydrophilicity
; hydrophobicity
; light scattering
; material state
; microscopy
; phase inversion
; scanning electron microscopy
; sedimentation
; thermogravimetry
; chemical phenomena
; chemistry
; emulsion
; Adsorption
; Dioctyl Sulfosuccinic Acid
; Emulsions
; Hydrophobic and Hydrophilic Interactions
; Nanoparticles
; Octanes
; Seawater
; Silicon Dioxide
; Surface-Active Agents
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Adsorption of suspended particles to the interface of surfactant-dispersed oil droplets can alter emulsion phase and sedimentation behavior. This work examines the effects of model mineral aggregates (silica nanoparticle aggregates or SNAs) on the behavior of oil (octane)-water emulsions prepared using sodium bis(2-ethylhexyl) sulfosuccinate (DOSS). Experiments were conducted at different SNA hydrophobicities in deionized and synthetic seawater (SSW), and at 0.5. mM and 2.5. mM DOSS. SNAs were characterized by thermogravimetric analysis (TGA) and dynamic light scattering (DLS), and the emulsions were examined by optical and cryogenic scanning electron microscopy. In deionized water, oil-in-water emulsions were formed with DOSS and the SNAs did not adhere to the droplets or alter emulsion behavior. In SSW, water-in-oil emulsions were formed with DOSS and SNA-DOSS binding through cation bridging led to phase inversion to oil-in-water emulsions. Droplet oil-mineral aggregates (OMAs) were observed for hydrophilic SNAs, while hydrophobic SNAs yielded quickly sedimenting agglomerated OMAs. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85266
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 Chemistry and Biology, Department of Engineering, Mathematics, and Physics, Texas A and M International University, Laredo, TX, United States; Department of Chemical Engineering, University of Rhode Island, 16 Greenhouse Rd, Kingston, RI, United States
Recommended Citation:
Gupta A.,Sender M.,Fields S.,et al. Phase and sedimentation behavior of oil (octane) dispersions in the presence of model mineral aggregates[J]. Marine Pollution Bulletin,2014-01-01,87(1)