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Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer

The treatment of high-strength wastewater using an anaerobic digester coupled with a dynamic membrane has gained significant interest of late due to its small footprint and low cost of supporting material for the membrane. Dynamic membrane fundamentally performs similarly to the conventional membran...

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Main Authors:	Mahat, S. B., Omar, R., Che Man, H., Md. Idris, A. I., Mustapa Kamal, S. M., Abdullah, L. C., Shreeshivadasan, C.
Format:	Article
Published:	Elsevier Ltd 2021
Subjects:	T Technology (General)
Online Access:	http://eprints.utm.my/id/eprint/96544/ http://dx.doi.org/10.1016/j.jece.2021.105718
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spelling	my.utm.965442022-07-31T01:00:08Z http://eprints.utm.my/id/eprint/96544/ Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer Mahat, S. B. Omar, R. Che Man, H. Md. Idris, A. I. Mustapa Kamal, S. M. Abdullah, L. C. Shreeshivadasan, C. T Technology (General) The treatment of high-strength wastewater using an anaerobic digester coupled with a dynamic membrane has gained significant interest of late due to its small footprint and low cost of supporting material for the membrane. Dynamic membrane fundamentally performs similarly to the conventional membranes by the cake layer deposited onto the supporting material with eventual fouling stage. The filtration performance is proportionally related to the cake layer development. Thus, the objective of this study is to characterize the cake layer affecting the filtration performance. A two-phase anaerobic digester with submerged 20-µm woven filter cloth as the supporting membrane (DAnMBR) was used in this study to treat food-processing wastewater. The organic loading rate of 5.0 g COD/L.day was fed into the DAnMBR, and the cake layer samples were taken at 14 days intervals until fouling occurred. The performance of the wastewater treatment and characteristics of the cake layer and bulk sludge were analyzed. It took a total of 35 days for the dynamic membrane to foul with a final flux of 2.5 L/m2·h and transmembrane pressure of 0.7 bar. The protein ratio to polysaccharide (PN/PS) of the extracellular polymeric substances increased significantly compared to soluble microbial product PN/PS ratio; thus, it is the main contributor to the membrane fouling. The thickness of the cake layer increased slightly from day 14 to 28 but sharply at the fouled stage (day 35), agreeing with the treatment performance. The concentrations of COD, BOD5, ammoniacal nitrogen, oil and grease, total suspended solids, and turbidity followed closely the inverse proportional trend of cake layer development. The size of the foulants that made up the cake layer resulted in micropore size dynamic membrane emanating the treatment performance of the DAnMBR is comparable to the conventional microfiltration AnMBR. Elsevier Ltd 2021 Article PeerReviewed Mahat, S. B. and Omar, R. and Che Man, H. and Md. Idris, A. I. and Mustapa Kamal, S. M. and Abdullah, L. C. and Shreeshivadasan, C. (2021) Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer. Journal of Environmental Chemical Engineering, 9 (4). p. 105718. ISSN 2213-3437 http://dx.doi.org/10.1016/j.jece.2021.105718 DOI:10.1016/j.jece.2021.105718
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	T Technology (General)
spellingShingle	T Technology (General) Mahat, S. B. Omar, R. Che Man, H. Md. Idris, A. I. Mustapa Kamal, S. M. Abdullah, L. C. Shreeshivadasan, C. Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer
description	The treatment of high-strength wastewater using an anaerobic digester coupled with a dynamic membrane has gained significant interest of late due to its small footprint and low cost of supporting material for the membrane. Dynamic membrane fundamentally performs similarly to the conventional membranes by the cake layer deposited onto the supporting material with eventual fouling stage. The filtration performance is proportionally related to the cake layer development. Thus, the objective of this study is to characterize the cake layer affecting the filtration performance. A two-phase anaerobic digester with submerged 20-µm woven filter cloth as the supporting membrane (DAnMBR) was used in this study to treat food-processing wastewater. The organic loading rate of 5.0 g COD/L.day was fed into the DAnMBR, and the cake layer samples were taken at 14 days intervals until fouling occurred. The performance of the wastewater treatment and characteristics of the cake layer and bulk sludge were analyzed. It took a total of 35 days for the dynamic membrane to foul with a final flux of 2.5 L/m2·h and transmembrane pressure of 0.7 bar. The protein ratio to polysaccharide (PN/PS) of the extracellular polymeric substances increased significantly compared to soluble microbial product PN/PS ratio; thus, it is the main contributor to the membrane fouling. The thickness of the cake layer increased slightly from day 14 to 28 but sharply at the fouled stage (day 35), agreeing with the treatment performance. The concentrations of COD, BOD5, ammoniacal nitrogen, oil and grease, total suspended solids, and turbidity followed closely the inverse proportional trend of cake layer development. The size of the foulants that made up the cake layer resulted in micropore size dynamic membrane emanating the treatment performance of the DAnMBR is comparable to the conventional microfiltration AnMBR.
format	Article
author	Mahat, S. B. Omar, R. Che Man, H. Md. Idris, A. I. Mustapa Kamal, S. M. Abdullah, L. C. Shreeshivadasan, C.
author_facet	Mahat, S. B. Omar, R. Che Man, H. Md. Idris, A. I. Mustapa Kamal, S. M. Abdullah, L. C. Shreeshivadasan, C.
author_sort	Mahat, S. B.
title	Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer
title_short	Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer
title_full	Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer
title_fullStr	Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer
title_full_unstemmed	Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer
title_sort	dynamic anaerobic membrane bioreactor (danmbr) with phase separation for food processing wastewater treatment at mesophilic temperature: characterization of cake layer
publisher	Elsevier Ltd
publishDate	2021
url	http://eprints.utm.my/id/eprint/96544/ http://dx.doi.org/10.1016/j.jece.2021.105718
_version_	1739828094880972800
score	13.211869

Dynamic anaerobic membrane bioreactor (DAnMBR) with phase separation for food processing wastewater treatment at mesophilic temperature: Characterization of cake layer

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