An improved flux-step method to determine the critical flux and the critical flux for irreversibility in a membrane bioreactor

Marel, P. van der; Zwijnenburg, A.; Kemperman, A.J.B.; Weßling, Matthias; Temmink, Hardy; Meer, Walter van der

doi:10.1016/j.memsci.2009.01.046

Cited by 146 publications

(51 citation statements)

References 19 publications

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“…Marel et al [25] was carried out in order to determinate the JC of each operating interval. Each JC was calculated according to the weak definition of this concept (JCW),…”

Section: Membrane Performance Indicesmentioning

confidence: 99%

Sub-critical long-term operation of industrial scale hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system

Robles

Ruano

Ribes

et al. 2012

Separation and Purification Technology

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“…Marel et al [25] was carried out in order to determinate the JC of each operating interval. Each JC was calculated according to the weak definition of this concept (JCW),…”

Section: Membrane Performance Indicesmentioning

confidence: 99%

Sub-critical long-term operation of industrial scale hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system

Robles

Ruano

Ribes

et al. 2012

Separation and Purification Technology

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“…In the "strong" concept, critical flux (JCS) is defined as the flux below which membrane performance is equal to its ability to treat clean water under same operating conditions. In the "weak" Marel et al, 2009). This method enables JC to be determined in a wide range of operating conditions, mainly in relation to the level of MLTS or gas sparging intensity, 4 usually measured as specific gas demand per unit of membrane area (SGDm).…”

Section: Mlts Levels In Aerobic Mbrsmentioning

confidence: 99%

Polyvinyl alcohol nanofiber reinforced Nafion membranes for fuel cell applications

Mollá

Compañ

2011

Journal of Membrane Science

132

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A submerged anaerobic MBR demonstration plant with two commercial hollowfibre ultrafiltration systems (PURON ® , Koch Membrane Systems, PUR-PSH31) was operated using municipal wastewater at high levels of mixed liquor total solids (MLTS) (above 22 g L -1 ). A modified flux-step method was applied to assess the critical flux (JC) at different gas sparging intensities. The results showed a linear dependency between JC and the specific gas demand per unit of membrane area (SGDm). JC ranged from 12 to 19 LMH at SGDm values of between 0.17 and 0.5 Nm 3 h -1 m -2 , which are quite low in comparison to aerobic MBR. Long-term trials showed that the membranes operated steadily at fluxes close to the estimated JC, which validates the JC obtained by this method. After operating the membrane for almost two years at sub-critical levels, no irreversible fouling problems were detected, and therefore, no chemical cleaning was conducted. KeywordsCritical flux; gas sparging; industrial hollow-fibre membranes; modified flux-step 2 method; submerged anaerobic membrane bioreactor

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“…The experimental determination of the critical flux has recently been addressed by several groups [28][29][30][31]. Most techniques are based on the analysis of the response of a membrane system to stepwise changes in applied transmembrane pressure or controlled flux.…”

Section: Fouling Characterisationmentioning

confidence: 99%

Slow colloidal aggregation and membrane fouling

Aimar

Bacchin

2010

Journal of Membrane Science

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An improved flux-step method to determine the critical flux and the critical flux for irreversibility in a membrane bioreactor

Cited by 146 publications

References 19 publications

Sub-critical long-term operation of industrial scale hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system

Sub-critical long-term operation of industrial scale hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system

Polyvinyl alcohol nanofiber reinforced Nafion membranes for fuel cell applications

Slow colloidal aggregation and membrane fouling

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