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Charfi, A.,Aslam, M.,Lesage, G.,Heran, M.,Kim, J. Korean Society of Industrial and Engineering Chemi 2017 Journal of industrial and engineering chemistry Vol.49 No.-
<P>A mathematical model was presented to understand membrane fouling in anaerobic fluidized bed membrane bioreactor (AFMBR). Assuming three fouling mechanisms, the cake formation, progressive porosity reduction and the pore blocking, the model describes the effect of granular activated carbon (GAC) on fouling resistance and mechanisms. The model shows satisfactory description of transmembrane pressure with R-2 approximate to 99%. Using GAC particles (2-3 mm) allows a better fouling mitigation by removing cake deposit while long term fouling is due to pore blocking. The fluidized small GAC particles (0.18-0.5 mm) foster the cake formation by their deposit on membrane surface. 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.</P>
Amine Charfi,Muhammad Aslam,Geoffroy Lesage,Marc Heran,김정환 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.49 No.-
A mathematical model was presented to understand membrane fouling in anaerobicfluidized bedmembrane bioreactor (AFMBR). Assuming three fouling mechanisms, the cake formation, progressiveporosity reduction and the pore blocking, the model describes the effect of granular activated carbon(GAC) on fouling resistance and mechanisms. The model shows satisfactory description of transmem-brane pressure with R299%. Using GAC particles (2–3 mm) allows a better fouling mitigation byremoving cake deposit while long term fouling is due to pore blocking. Thefluidized small GAC particles(0.18–0.5 mm) foster the cake formation by their deposit on membrane surface.
Aslam, Muhammad,McCarty, Perry L.,Shin, Chungheon,Bae, Jaeho,Kim, Jeonghwan Elsevier 2017 Bioresource technology Vol.240 No.-
<P><B>Abstract</B></P> <P>An aluminum dioxide (Al<SUB>2</SUB>O<SUB>3</SUB>) ceramic membrane was used in a single-stage anaerobic fluidized bed ceramic membrane bioreactor (AFCMBR) for low-strength wastewater treatment. The AFCMBR was operated continuously for 395days at 25°C using a synthetic wastewater having a chemical oxygen demand (COD) averaging 260mg/L. A membrane net flux as high as 14.5–17L/m<SUP>2</SUP> h was achieved with only periodic maintenance cleaning, obtained by adding 25mg/L of sodium hypochlorite solution. No adverse effect of the maintenance cleaning on organic removal was observed. An average SCOD in the membrane permeate of 23mg/L was achieved with a 1h hydraulic retention time (HRT). Biosolids production averaged 0.014±0.007gVSS/gCOD removed. The estimated electrical energy required to operate the AFCMBR system was 0.039kWh/m<SUP>3</SUP> <SUB>,</SUB> which is only about 17% of the electrical energy that could be generated with the methane produced.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ceramic membrane was applied in anaerobic fluidized MBR for low-strength wastewater. </LI> <LI> Membrane net flux of 17LMH was achieved with only periodic maintenance cleaning. </LI> <LI> No adverse effect of the maintenance cleaning on organic removal was observed. </LI> <LI> Average SCOD in membrane permeate of 23mg/L was achieved. </LI> <LI> Electrical energy required to operate the AFCMBR was only about 0.038kWh/m<SUP>3</SUP>. </LI> </UL> </P>