Analytical Ultracentrifuge Technologies for the Characterization of Biopolymer Gels and Microgels

Cölfen, Helmut

doi:10.1080/02648725.1999.10647972

Cited by 16 publications

(2 citation statements)

References 36 publications

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“…J value was experimentally determined. χ value of 0.40 was set for agar-water system according to Colfen 37 . In this study, φ 2 value was determined to be about 0.10.…”

Section: Resultsmentioning

confidence: 99%

A novel insight into membrane fouling mechanism regarding gel layer filtration: Flory-Huggins based filtration mechanism

Qian

Zhang

Shen

et al. 2016

Sci Rep

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This study linked the chemical potential change to high specific filtration resistance (SFR) of gel layer, and then proposed a novel membrane fouling mechanism regarding gel layer filtration, namely, Flory-Huggins based filtration mechanism. A mathematical model for this mechanism was theoretically deduced. Agar was used as a model polymer for gel formation. Simulation of the mathematical model for agar gel showed that volume fraction of polymer and Flory-Huggins interaction parameter were the two key factors governing the gel SFR, whereas, pH and ionic strength were not related with the gel SFR. Filtration tests of gel layer showed that the total SFR value, effects of pH and ionic strength on the gel SFR well agreed with the perditions of model’s simulation, indicating the real occurrence of this mechanism and the feasibility of the proposed model. This mechanism can satisfactorily explain the extremely high SFR of gel layer, and improve fundamental insights into membrane fouling regarding gel layer filtration.

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“…J value was experimentally determined. χ value of 0.40 was set for agar-water system according to Colfen 37 . In this study, φ 2 value was determined to be about 0.10.…”

Section: Resultsmentioning

confidence: 99%

A novel insight into membrane fouling mechanism regarding gel layer filtration: Flory-Huggins based filtration mechanism

Qian

Zhang

Shen

et al. 2016

Sci Rep

View full text Add to dashboard Cite

show abstract

“…(4) and (12) can be simulated, provided that values of the model parameters are obtained. The selected values and the selection reasons were provided as follows: f was set as 0.1 considering that the formed gel had water content above 90%; c was set as 0.4 according to Colfen (1999); J was experimentally determined to be 0.000025 m 3 m À2 s À1 in dead-end filtration tests; s is 10 À3 Pa s for water. According to Eq.…”

Section: Verification Of the Proposed Mechanismmentioning

confidence: 99%

Membrane fouling in a membrane bioreactor: High filtration resistance of gel layer and its underlying mechanism

et al. 2016

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Practical Examples of Combination of Methods

Analytical Ultracentrifugation of Polymers and Nanoparticles

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Analytical Ultracentrifuge Technologies for the Characterization of Biopolymer Gels and Microgels

Cited by 16 publications

References 36 publications

A novel insight into membrane fouling mechanism regarding gel layer filtration: Flory-Huggins based filtration mechanism

A novel insight into membrane fouling mechanism regarding gel layer filtration: Flory-Huggins based filtration mechanism

Membrane fouling in a membrane bioreactor: High filtration resistance of gel layer and its underlying mechanism

Practical Examples of Combination of Methods

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