Study of behaviour of membranes in the presence of anionic or nonionic surfactants

Mietton‐Peuchot, Martine; Ranisio, Olivier; Peuchot, C.

doi:10.1016/s0015-1882(97)81412-7

Cited by 19 publications

(10 citation statements)

References 8 publications

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“…As it is mentioned in the literature that flux decline is related to the adsorbed amount, [1,19] the results of the adsorption experiments are described firstly.…”

Section: Effect Of the Type Of Surfactantmentioning

confidence: 99%

“…As in some previous studies, a relation between membrane fouling and adsorption [18][19][20] is assumed; static adsorption experiments were performed for each solution to check this assumption. After the adsorption experiments, the hydrophobicity of the membrane surface was determined again to get an idea of the orientation of the adsorbed surfactants.…”

Section: Introductionmentioning

confidence: 99%

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Surfactant Fouling of Nanofiltration Membranes: Measurements and Mechanisms

et al. 2007

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Fouling of nanofiltration membranes is studied during filtration of aqueous surfactant solutions under different conditions. To this purpose, four typical nanofiltration membranes (Desal51HL, NF270, NTR7450 and NFPES10) and three typical surfactants (nonionic neodol, anionic SDBS and cationic cetrimide) are selected. Fouling is studied as a function of the surfactant concentration, with and without addition of an electrolyte (NaCl), at different pH and when filtering a mixture of surfactants. Adsorption experiments and hydrophobicity measurements (to study the orientation of the surfactants on the membrane surface) are also performed under the different conditions. The least membrane fouling is found for the anionic surfactant SDBS, while for the cationic surfactant cetrimide very low relative fluxes are observed. Neodol shows an intermediate degree of fouling. Both hydrophobic and electrostatic interactions (in the case of ionic surfactants) between the membrane surface and the surfactant explain the degree of adsorption and hence fouling, as membrane fouling is correlated with the amount of adsorbed surfactant. The difference between cetrimide and SDBS becomes especially visible when changing the pH: increasing the pH leads not only to an opposite orientation of the adsorbed surfactants, but also to an opposite trend in adsorbed amount and membrane fouling. This study permits selection of an optimal nanofiltration membrane to recycle wastewater containing surfactants in the carwash industry. The optimal choice would be a hydrophilic membrane with a low molecular weight cut-off and a small negative surface charge at neutral pH. Cationic surfactants in the wastewater should also be avoided as much as possible.

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“…As it is mentioned in the literature that flux decline is related to the adsorbed amount, [1,19] the results of the adsorption experiments are described firstly.…”

Section: Effect Of the Type Of Surfactantmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surfactant Fouling of Nanofiltration Membranes: Measurements and Mechanisms

et al. 2007

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“…The best results in terms of permeability were obtained with hydrophilic membranes. Mietton-Peuchot et al (1997) reported that surfactants may interact with polymeric membranes even at very weak levels of concentration, while the most important forces are hydrophobic interactions when the surfactant is in the monomer form. However, above the CMC, concentration polarization by retained micelles causes permeate flux reduction.…”

Section: Nanofiltration Of Contaminated Single-phase Detergents: Shormentioning

confidence: 99%

Nanofiltration regeneration of contaminated single-phase detergents used in the dairy industry

Fernández

Riera

Álvarez

et al. 2010

Journal of Food Engineering

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“…(7). Relationship between the net osmotic pressure at membrane surface ( m )and the net osmotic pressure in bulk ( b ) was acquired.…”

Section: Mathematical Model For Predicting Permeate Flux Of Ro Membranementioning

confidence: 99%

“…Hence, the hydrophobic tails of the surfactant monomers easily associate themselves with the hydrophobic surface of membrane and turn the hydrophilic heads against the bulk. In contrary, when its concentration is higher than CMC, it causes fouling by a concentration polarization and leads to colloidal formation in water [7]. Dye fouling is affected by charge properties, salt concentration, and cross-flow velocity (CFV) [8,9].…”

Section: Introductionmentioning

confidence: 99%