抄録
Formulations based on conventional surfactants and organic solvents have been used as potential dispersants for oil-spill remediation. However, their toxicity restricts their usage in marine environments. As a low-toxicity alternative, in this article we report an oil dispersant based on a binary mixture of an ionic liquid surfactant, choline laurate ([Cho][Lau]), and a biosurfactant, lactonic sophorolipid. We investigated the micellar properties, including the critical micelle concentration, micellar interaction parameter (β), and activity coefficients (f 1 and f 2 ) for the mixed surfactant system. A non-ideal and synergistic interaction between [Cho][Lau] and lactonic sophorolipid was observed. A stable oil-in-water emulsion formed at an optimal ratio of 40:60 (w/w) of [Cho][Lau] and lactonic sophorolipid. At this ratio, a dispersion effectiveness of 83% was achieved with a dispersant-to-oil ratio of 1:25 (v/v). We observed the dispersed oil droplets with an optical microscope and evaluated their size using dynamic light scattering. The droplet size decreased with increasing dispersant-to-oil ratio. We also assessed the toxicity of the binary surfactant mixture in zebra fish (Danio rerio). Based on this assessment, the mixture can be classified as non-toxic. Therefore, the mixture of [Cho][Lau] and lactonic sophorolipid is a potential alternative to conventional toxic oil-spill dispersants.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 111-119 |
| ページ数 | 9 |
| ジャーナル | Journal of Molecular Liquids |
| 巻 | 280 |
| DOI | |
| 出版物ステータス | 出版済み - 4 15 2019 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Spectroscopy
- Physical and Theoretical Chemistry
- Materials Chemistry
これを引用
A binary mixture of a biosurfactant and an ionic liquid surfactant as a green dispersant for oil spill remediation. / Shah, Mansoor Ul Hassan; Moniruzzaman, Muhammad; Sivapragasam, Magaret; Talukder, Md Mahabubur Rahman; Yusup, Suzana Bt; Goto, Masahiro.
：: Journal of Molecular Liquids, 巻 280, 15.04.2019, p. 111-119.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - A binary mixture of a biosurfactant and an ionic liquid surfactant as a green dispersant for oil spill remediation
AU - Shah, Mansoor Ul Hassan
AU - Moniruzzaman, Muhammad
AU - Sivapragasam, Magaret
AU - Talukder, Md Mahabubur Rahman
AU - Yusup, Suzana Bt
AU - Goto, Masahiro
PY - 2019/4/15
Y1 - 2019/4/15
N2 - Formulations based on conventional surfactants and organic solvents have been used as potential dispersants for oil-spill remediation. However, their toxicity restricts their usage in marine environments. As a low-toxicity alternative, in this article we report an oil dispersant based on a binary mixture of an ionic liquid surfactant, choline laurate ([Cho][Lau]), and a biosurfactant, lactonic sophorolipid. We investigated the micellar properties, including the critical micelle concentration, micellar interaction parameter (β), and activity coefficients (f 1 and f 2 ) for the mixed surfactant system. A non-ideal and synergistic interaction between [Cho][Lau] and lactonic sophorolipid was observed. A stable oil-in-water emulsion formed at an optimal ratio of 40:60 (w/w) of [Cho][Lau] and lactonic sophorolipid. At this ratio, a dispersion effectiveness of 83% was achieved with a dispersant-to-oil ratio of 1:25 (v/v). We observed the dispersed oil droplets with an optical microscope and evaluated their size using dynamic light scattering. The droplet size decreased with increasing dispersant-to-oil ratio. We also assessed the toxicity of the binary surfactant mixture in zebra fish (Danio rerio). Based on this assessment, the mixture can be classified as non-toxic. Therefore, the mixture of [Cho][Lau] and lactonic sophorolipid is a potential alternative to conventional toxic oil-spill dispersants.
AB - Formulations based on conventional surfactants and organic solvents have been used as potential dispersants for oil-spill remediation. However, their toxicity restricts their usage in marine environments. As a low-toxicity alternative, in this article we report an oil dispersant based on a binary mixture of an ionic liquid surfactant, choline laurate ([Cho][Lau]), and a biosurfactant, lactonic sophorolipid. We investigated the micellar properties, including the critical micelle concentration, micellar interaction parameter (β), and activity coefficients (f 1 and f 2 ) for the mixed surfactant system. A non-ideal and synergistic interaction between [Cho][Lau] and lactonic sophorolipid was observed. A stable oil-in-water emulsion formed at an optimal ratio of 40:60 (w/w) of [Cho][Lau] and lactonic sophorolipid. At this ratio, a dispersion effectiveness of 83% was achieved with a dispersant-to-oil ratio of 1:25 (v/v). We observed the dispersed oil droplets with an optical microscope and evaluated their size using dynamic light scattering. The droplet size decreased with increasing dispersant-to-oil ratio. We also assessed the toxicity of the binary surfactant mixture in zebra fish (Danio rerio). Based on this assessment, the mixture can be classified as non-toxic. Therefore, the mixture of [Cho][Lau] and lactonic sophorolipid is a potential alternative to conventional toxic oil-spill dispersants.
UR - http://www.scopus.com/inward/record.url?scp=85061525420&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061525420&partnerID=8YFLogxK
U2 - 10.1016/j.molliq.2019.02.049
DO - 10.1016/j.molliq.2019.02.049
M3 - Article
VL - 280
SP - 111
EP - 119
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
SN - 0167-7322
ER -