Membrane fouling and resistance analysis in dead-end ultrafiltration of Bacillus subtilis fermentation broths

Juang, Ruey‐Shin; Chen, Huei-Li; Chen, Ying-Shr

doi:10.1016/j.seppur.2008.06.011

Cited by 58 publications

(29 citation statements)

References 22 publications

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“…All these introduce additional resistances on the feed side to the transport across the membrane. Resistance-in-series models that consider membrane resistance, adsorption resistance, concentration polarization resistance, and cake resistance have been applied to describe such processes [10].…”

Section: Introductionmentioning

confidence: 99%

Performance of a coagulation–ultrafiltration hybrid process for water supply treatment

Bergamasco

Moraes

Vieira

et al. 2011

Chemical Engineering Journal

109

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a b s t r a c tThe combination of coagulation/flocculation and ultrafiltration in the process of drinking water treatment was investigated using natural (chitosan) and chemical (aluminum sulfate) coagulants. A 0.1 m singlechannel membrane was applied at pressures of 1 bar and 2 bar, using the principle of crossflow filtration. The final produced water quality was assessed considering the efficiency of removal of color, turbidity, COD, and compounds that absorb UV at 254 nm, among other physico-chemical and microbiological parameters. The coagulation/flocculation with chitosan as coagulant (CFQ) was efficient in removing compounds that add color and turbidity and that absorb UV at 254 nm, with levels that were very similar to those obtained with the coagulation/flocculation process with aluminum sulfate as coagulant (CFS). Performance evaluation of the hybrid systems (CFS-UF and CFQ-UF) showed that the permeate quality was increased when compared with individually operated systems (UF, CFS, and CFQ). The CFQ-UF process caused higher membrane fouling (79% at 2 bar), but yielded a higher stabilized permeate flux, which was approximately twice that achieved with CFS-UF. Based on the results, one can say that chitosan has a potential application as natural coagulant in CF-UF hybrid processes for treating drinking water with relatively high turbidity.

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Section: Introductionmentioning

confidence: 99%

Performance of a coagulation–ultrafiltration hybrid process for water supply treatment

Bergamasco

Moraes

Vieira

et al. 2011

Chemical Engineering Journal

109

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“…We know that the fermentative broths are a mix of a number of different compounds in different sizes. Accordig to Juang et al [22], the flux decline of fermentative broth from Bacillus subtilis, is due to the adsorption of small molecules in the pore wall such as proteins, polysaccharides and peptides. UF membrane of 10 kDa used in the concentration step presented enzyme and protein retention of 99% in all schemes tested.…”

Section: Effect Of the Pretreatments In The Permeate Fluxmentioning

confidence: 97%

Activated charcoal and microfiltration as pretreatment before ultrafiltration of pectinases produced by Aspergillus niger in solid-state cultivation

Poletto

Renosto

Baldasso

et al. 2015

Separation and Purification Technology

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“…(6). The values of R g along the filtration time can then be directly estimated from the variations in total resistance using the results obtained for R cp + in and R m .…”

Section: Fouling Resistancesmentioning

confidence: 99%

“…(6). In this equation, the total resistance of the membrane at steady state is equal to the membrane resistance if the process is operated using pure water.…”

Section: Model Parametersmentioning

confidence: 99%

“…They found that pore blocking and gel layer formation caused flux to decline. In another study, Juang et al [6] investigated flux decline in a deadend UF of biosurfactants using this model. They observed that the resistance due to concentration polarisation played a more crucial role in flux decline than gel layer formation and solute adsorption.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of fouling mechanisms in the nanofiltration of solutions with high anionic and nonionic surfactant contents using a resistance-in-series model

Kaya

Barlas

Arayıcı

2011

Journal of Membrane Science

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Membrane fouling and resistance analysis in dead-end ultrafiltration of Bacillus subtilis fermentation broths

Cited by 58 publications

References 22 publications

Performance of a coagulation–ultrafiltration hybrid process for water supply treatment

Performance of a coagulation–ultrafiltration hybrid process for water supply treatment

Activated charcoal and microfiltration as pretreatment before ultrafiltration of pectinases produced by Aspergillus niger in solid-state cultivation

Evaluation of fouling mechanisms in the nanofiltration of solutions with high anionic and nonionic surfactant contents using a resistance-in-series model

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