Membrane fouling in the ultrafiltration of polyelectrolyte solutions: Polyacrylic acid and bovine serum albumin

Choe, Taeboo; Massé, Pascal; Verdier, A.; Clifton, Michaël

doi:10.1016/s0376-7388(00)80110-6

Cited by 54 publications

(13 citation statements)

References 10 publications

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“…At pH above isoelectric point, the membrane is negatively charged. Associated with pH solution grows, sulfonic groups of polymer start dissociating and presence of sulfonate groups (

{SO}_{3}^{-}

) are more important .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Recovery of samarium (III) from aqueous solutions by poly(sodium 4‐styrenesulfonate) assisted‐ultrafiltration

Hammami¹,

Ennigrou²,

Horchani−Naifer³

et al. 2016

Env Prog and Sustain Energy

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Polyelectrolyte‐assisted ultrafiltration (PAUF) was investigated for the removal of samarium (III) from aqueous solutions by using poly(sodium 4‐styrenesulfonate) (PSS) as a complexing agent. The ultrafiltration studies were carried out using a tangential cell system, equipped with a polyethersulfone membrane. Factors affecting the samarium ions retention, such as applied pressure, polyelectrolyte concentration, pH, and ionic strength, were investigated. After optimization, the best operating conditions can be obtained in order to achieve high levels of recovery. Experimental results indicate that the retention of samarium ions increases respectively with applied pressure and polyelectrolyte concentration. A maximum retention was obtained at 2 × 10−4 mol L−1 PSS concentration and 3 bars transmembrane pressure. Samarium retention by PSS assisted ultrafiltration was influenced by the pH varying from 5 to 9. The study of the ionic strength effect has shown a retention decrease with the salt concentration increase. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1091–1097, 2016

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“…At pH above isoelectric point, the membrane is negatively charged. Associated with pH solution grows, sulfonic groups of polymer start dissociating and presence of sulfonate groups (

{SO}_{3}^{-}

) are more important .…”

Section: Resultsmentioning

confidence: 99%

“…3 ) are more important [31]. Speciation profiles are very important for the interpretation and the understanding of the reactivity of metal ions in solution.…”

Section: Effect Of Phmentioning

confidence: 99%

Recovery of samarium (III) from aqueous solutions by poly(sodium 4‐styrenesulfonate) assisted‐ultrafiltration

Hammami¹,

Ennigrou²,

Horchani−Naifer³

et al. 2016

Env Prog and Sustain Energy

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“…Therefore, reduced charge interaction between membrane and cation-NOM complex enhanced membrane fouling by NOM as observed in the present study when cation were added to feed. Calcium ion is also reported to decrease solubility of humic acid (Choe et al 1986) and also can form bridge between the negatively charged groups of humic acid and membrane surface. Therefore, the presence of NOM and divalent cations in feed which are very much probable component of actual field water is severely fouling membrane and restricting the application of membrane filtration to remove pesticides from water.…”

Section: Resultsmentioning

confidence: 99%

“…If the solubility product of PAA-Ca/Mg complex exceeds precipitation may occur as observed in the present case. Choe et al (1986) reported high rejection of PAA at low H ? concentration and at high cation concentration when PAA was ultrafiltered in the presence of Cu 2?…”

Section: Effect Of Addition Of Polyacrylic Acidmentioning

confidence: 99%

Pretreatment of agriculture field water for improving membrane flux during pesticide removal

2016

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Pretreatment of feed water to improve membrane flux during filtration of agriculture field water containing substituted phenyl urea pesticide diuron has been reported. Laboratory-made reverse osmosis membrane was used for filtration. Preliminary experiments were conducted with model solution containing natural organic matter extracted from commercial humic acids, divalent ions Ca 2? , Mg 2?. Membrane fouling was characterized by pure water flux decline, change in membrane hydrophilicity and infrared spectroscopy. Natural organic matter present in field water causes severe membrane fouling. The presence of divalent cations further aggravated fouling. Use of ethylenediaminetetraacetic acid (EDTA) and polyacrylic acids (PAA) in feed resulted in the decrease in membrane fouling. Pretreatment of field water is a must if it is contaminated with microorganism having membrane fouling potential. Feed water pretreatment and use of PAA restricted membrane fouling to 16 % after 60 h of filtration. Membrane permeate flux decline was maximum at the first 12 h and thereafter remained steady at around 45-46 lm-2 h-1 till the end of 60 h. Diuron rejection remained consistently greater than 93 % throughout the experiment. Diuron rejection was found to be unaffected by membrane fouling.

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“…This figure illustrates that retention increases with the rise of pH to reach a plateau around 98% for pH superior to 4. The increase in pH leads to an increase in deprotoned carboxylic groups concentration, which favours the formation of macromolecular polymer-metal complexes, and subsequently an increase in metal rejection coefficients [28,29]. It can be also observed that permeate flux increases as far as pH increases.…”

Section: Effect Of Ionic Strengthmentioning

confidence: 97%

Retention of cadmium ions from aqueous solutions by poly(ammonium acrylate) enhanced ultrafiltration

Ennigrou

Gzara

Romdhane

et al. 2009

Chemical Engineering Journal

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Membrane fouling in the ultrafiltration of polyelectrolyte solutions: Polyacrylic acid and bovine serum albumin

Cited by 54 publications

References 10 publications

Recovery of samarium (III) from aqueous solutions by poly(sodium 4‐styrenesulfonate) assisted‐ultrafiltration

Recovery of samarium (III) from aqueous solutions by poly(sodium 4‐styrenesulfonate) assisted‐ultrafiltration

Pretreatment of agriculture field water for improving membrane flux during pesticide removal

Retention of cadmium ions from aqueous solutions by poly(ammonium acrylate) enhanced ultrafiltration

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