Cationic Surfactant Adsolubilization of 2-Naphthol and Naphthalene with Titanium Dioxide Having Dodecyl Chain

Esumi, Kunio; Uda, Syuji; Suhara, Tsuneo; Fukui, Hiroshi; Koide, Yoshifumi

doi:10.1006/jcis.1997.5078

Cited by 15 publications

(15 citation statements)

References 12 publications

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“…Titanium dioxide has been modified by grafting dodecyl chains onto the surface (51,52). The concentrations of dodecyl Figure 18a shows the adsorption isotherms of dodecyltrimethylammonium bromide (DTAB) on the modified titanium dioxide in the presence of 0.4 mmol dm −3 2-naphthol.…”

Section: Adsolubilization By Surfactants Using Surface Chemistry Modimentioning

confidence: 99%

Interactions between Surfactants and Particles: Dispersion, Surface Modification, and Adsolubilization

Esumi

2001

Journal of Colloid and Interface Science

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Section: Adsolubilization By Surfactants Using Surface Chemistry Modimentioning

confidence: 99%

Interactions between Surfactants and Particles: Dispersion, Surface Modification, and Adsolubilization

Esumi

2001

Journal of Colloid and Interface Science

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“…Several studies have used partition coefficients to analyze adsolubilization behavior with at least three different coefficient definitions being use [21][22][23]. A common one is [21] (4)…”

Section: Model Developmentmentioning

confidence: 99%

“…It has been hypothesized that solutes with different polarities and structures will preferentially partition into different regions within the admicelle according to their hydrophobicity and structure. Additionally, several partition coefficients have been defined by different groups and used to examine adsolubilization behavior [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Use of the BET adsorption isotherm equation to examine styrene adsolubilization by nonionic surfactants at the water–silica interface

Tan

O’Haver

2004

Journal of Colloid and Interface Science

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“…6 Park and Jaffe, 1993;Nayyar et al, 1994;Sun et al, 1995 , Lee et al, 1990;Edwards et al, 1994 , Ž . and type of matrix Esumi et al, 1997 . Despite these numerous dependencies, the data show that log K generally increases as a linear function of log K .…”

Section: General Prediction Of Transport Facilitation Of Hydrophobic mentioning

confidence: 99%

Facilitated transport of a PAH mixture by a rhamnolipid biosurfactant in porous silica matrices

Noordman¹,

Bruining²,

Wietzes³

et al. 2000

Journal of Contaminant Hydrology

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Ž. The facilitated transport of a mixture of three polycyclic aromatic hydrocarbons PAH Ž . naphthalene, fluorene, and phenanthrene by a rhamnolipid biosurfactant was determined with silica, octadecyl-coated silica, and humic acid-coated silica columns. The retardation factors for Ž . the contaminants in the absence of rhamnolipid ranged from 1.8 naphthalene with silica to 708 Ž . phenanthrene with octadecyl-coated silica . The retardation factors for phenanthrene were up to eightfold lower in the presence of 500 mgrl rhamnolipid compared to the situation where no rhamnolipid was present. The facilitated transport of the contaminants in the presence of rhamnolipid could be predicted by accounting for sorption, solubilization and admicellar sorption. In the octadecyl-coated matrix, transport of fluorene and phenanthrene was enhanced even in the Ž . presence of sub-micellar solution of rhamnolipid 20 mgrl , showing that adsorbed surfactant reduced the affinity of these compounds to this stationary phase. Linear free-energy relations Ž . LFERs indicated that the matrix-water, micelle-water, and admicelle-water partitioning constants for PAH were correlated with their 1-octanol-water partitioning constants. These correlations were used to simulate the facilitated transport of contaminants of varying hydrophobicity by a surfactant. It was concluded that surfactants have the greatest transport facilitating effect on the more hydrophobic components. The effectiveness of surfactants for enhancing removal of the less Ž . hydrophobic compounds log K -3.4 may considerably be reduced due to admicellar sorption.

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Cationic Surfactant Adsolubilization of 2-Naphthol and Naphthalene with Titanium Dioxide Having Dodecyl Chain

Cited by 15 publications

References 12 publications

Interactions between Surfactants and Particles: Dispersion, Surface Modification, and Adsolubilization

Interactions between Surfactants and Particles: Dispersion, Surface Modification, and Adsolubilization

Use of the BET adsorption isotherm equation to examine styrene adsolubilization by nonionic surfactants at the water–silica interface

Facilitated transport of a PAH mixture by a rhamnolipid biosurfactant in porous silica matrices

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