Nanofiltration of single and mixture solutions containing anionics and nonionic surfactants below their critical micelle concentrations (CMCs)

Kaya, Yasemin; Aydıner, Coşkun; Barlas, Hulusi; Keskinler, Bülent

doi:10.1016/j.memsci.2006.05.047

Cited by 51 publications

(35 citation statements)

References 34 publications

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“…Kaya et. al [2] reported that membrane NF PES 10 (made of polyethersulfone, MWCO = 1000 Da) was more fouled than membrane N 30F (polyethersulfone, MWCO = 400 Da) during the non-ionic surfactant filtration. It should be mentioned that correlation between membrane pore size and micelle diameter/ monomer length affects process efficiency.…”

Section: Transport Propertiesmentioning

confidence: 99%

“…The hydrophilic part enables molecule to solubilize in polar liquids, while the hydrophobic portion allows the solubilisation in nonpolar liquids. Depending on the hydrophilic unit charge, surfactants are classified into four groups: nonionic (0), anionic (-), cationic (+) and amphoteric (±) [2].…”

Section: Introductionmentioning

confidence: 99%

“…Surface active agents occur both in municipal and industrial wastewater [2]. Large amounts of surfactants in sewage stream may result in disorder of biological treatment (activated sludge process) [9], hence surfactant concentration in industrial wastewater discharged into sewage systems in Poland cannot exceed 15 mg/dm 3 and 20 mg/dm 3 for anionic and non-ionic surfactants, respectively [10].…”

Section: Introductionmentioning

confidence: 99%

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Application of nanofiltration membranes for removal of surfactants from water solutions

Kowalska

Klimonda

2017

E3S Web Conf.

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Abstract. The objective of the study was to compare effectiveness of nanofiltration (NF) process for treatment aqueous solutions containing various types of surfactants (anionic, cationic and non-ionic). The experiments were conducted with the use of Microdyn-Nadir ® nanofiltration membranes (NP010 and NP030). The effect of surfactant type, its concentration and membrane cut-off on the process parameters (retention coefficient and permeate flux) was assessed. The experiments showed that separation of anionic and cationic surfactants depended on their concentration in the feed solutions. The retention coefficient of anionic surfactant ranged from 54 to 81% (NP010) and from 64 to 80% (NP030), while rejection of cationic surfactant varied from 48 to 85% (NP010) and from 51 to 88% (NP030). The values of retention coefficient of non-ionic surfactant were in the range of 69-77% and 79-88% for NP010 and NP030, respectively; and to a much lesser extent were depended on its concentration in the feed solutions in comparison with anionic and cationic compounds. Membrane characterized by smaller value of cut-off (NP030) allowed to obtain higher retention coefficients of surfactants. The membrane permeability deterioration was observed with the increase of surfactants concentration in the treated solutions. In all experiments, a sharp decline of the permeate flux was noticed for concentration below the CMC values.

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Section: Transport Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of nanofiltration membranes for removal of surfactants from water solutions

Kowalska

Klimonda

2017

E3S Web Conf.

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“…If surfactants are below their critical micelle concentration (CMC) they will not be retained by any of these techniques, but if they are above CMC, MF and UF techniques retain these components and the permeate stream will lose its cleaning properties. Some works based on NF processes with the aim of surfactants recovery in the permeate stream have been published in the last years (Boussu et al, 2007, Forstmeier et al, 2002Kaya et al, 2006Kaya et al, , 2009. In those cases permeate flux and surfactant rejection are strongly dependent on the membrane material (membrane isoelectric point -IEP) and feed conditions (pH, concentration, etc.)…”

Section: Recovery Of Cleaning-in-place Solutionsmentioning

confidence: 99%

Membrane Separation Process in Wastewater Treatment of Food Industry

Muro¹,

Riera²,

Díaz³

2012

Food Industrial Processes - Methods and Equipment

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“…The removal efficiency of surfactant (CL80) from solutions containing 500-5,000 mg L -1 exceeded 94%. Kaya et al (2006) ) ranged from 46% to 93% for NF PES10 and XN 45, respectively. Korzenowski et al (2012) studied the effectiveness of FilmTec membranes (NF-90, NF-200 and NF-270) for removal of anionic surfactants (linear alkyl benzene sulfonate and sodium dodecylether sulfate) with a content of 430 mg L -1 from model solutions and detergent wastewater.…”

Section: Introductionmentioning

confidence: 99%

Nanofiltration: ion exchange system for effective surfactant removal from water solutions

Kowalska

2014

Braz. J. Chem. Eng.

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-A system combining nanofiltration and ion exchange for highly effective separation of anionic surfactant from water solutions was proposed. The subjects of the study were nanofiltration polyethersulfone membranes and ion-exchange resins differing in type and structure. The quality of the treated solution was affected by numerous parameters, such as quality of the feed solution, membrane cut-off, resin type, dose and the solution contact time with the resin. A properly designed purification system made it possible to reduce the concentration of anionic surfactant below 1 mg L -1 from feed solutions containing surfactant in concentrations above the CMC value.

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Nanofiltration of single and mixture solutions containing anionics and nonionic surfactants below their critical micelle concentrations (CMCs)

Cited by 51 publications

References 34 publications

Application of nanofiltration membranes for removal of surfactants from water solutions

Application of nanofiltration membranes for removal of surfactants from water solutions

Membrane Separation Process in Wastewater Treatment of Food Industry

Nanofiltration: ion exchange system for effective surfactant removal from water solutions

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