Fouling formation in membrane contactors for methane recovery from anaerobic effluents

Fouling in membrane contactors for recovery of dissolved methane (CH4) was investigated in this work. Two types of effluents from anaerobic membrane bioreactor (AnMBR) and upflow anaerobic sludge blanket (UASB) were tested under a continuous operational mode. Due to the higher fouling propensity of...

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Main Authors: Rongwong, Wichitpan, Goh, Kunli, Sethunga, Godakooru Sethunga Mudiyanselage Dilhara Prebhashwari, Bae, Tae-Hyun
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2021
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Online Access:https://hdl.handle.net/10356/151159
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1511592021-10-15T07:01:19Z Fouling formation in membrane contactors for methane recovery from anaerobic effluents Rongwong, Wichitpan Goh, Kunli Sethunga, Godakooru Sethunga Mudiyanselage Dilhara Prebhashwari Bae, Tae-Hyun School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Singapore Membrane Technology Centre Engineering::Environmental engineering Membrane Contactor Fouling Fouling in membrane contactors for recovery of dissolved methane (CH4) was investigated in this work. Two types of effluents from anaerobic membrane bioreactor (AnMBR) and upflow anaerobic sludge blanket (UASB) were tested under a continuous operational mode. Due to the higher fouling propensity of the UASB effluent, membrane fouling was more drastic, leading to a greater decline in the CH4 desorption flux with respect to the operational time. Also, the flux was observed to be influenced by the gas-liquid contact time and declined more severely with increasing liquid velocity. Membrane characterization revealed cake layer formation as the source of membrane fouling while foulants characterization indicated that the majority of the foulants were protein-like-substances with fluorescence spectra showing signals close to that of extracellular polymeric substances. On this basis, a mass transfer analysis was performed to understand the fouling resistance exerted by the cake layer and identify a parameter which best described the fouling mechanism. It was found that cake thickness can be used to express the change in fouling resistance in the case of the AnMBR effluent, while cake porosity was a better parameter in the case of the UASB effluent. National Research Foundation (NRF) Public Utilities Board (PUB) This research grant is supported by the Singapore National Research Foundation under its Environmental & Water Research Programme (Project Ref No: 1301-IRIS-49) and administered by Public Utilities Board, Singapore's national water agency. 2021-10-15T07:01:19Z 2021-10-15T07:01:19Z 2019 Journal Article Rongwong, W., Goh, K., Sethunga, G. S. M. D. P. & Bae, T. (2019). Fouling formation in membrane contactors for methane recovery from anaerobic effluents. Journal of Membrane Science, 573, 534-543. https://dx.doi.org/10.1016/j.memsci.2018.12.038 0376-7388 0000-0001-5499-5187 https://hdl.handle.net/10356/151159 10.1016/j.memsci.2018.12.038 2-s2.0-85058684841 573 534 543 en 1301-IRIS-49 Journal of Membrane Science © 2018 Elsevier B.V. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Environmental engineering
Membrane Contactor
Fouling
spellingShingle Engineering::Environmental engineering
Membrane Contactor
Fouling
Rongwong, Wichitpan
Goh, Kunli
Sethunga, Godakooru Sethunga Mudiyanselage Dilhara Prebhashwari
Bae, Tae-Hyun
Fouling formation in membrane contactors for methane recovery from anaerobic effluents
description Fouling in membrane contactors for recovery of dissolved methane (CH4) was investigated in this work. Two types of effluents from anaerobic membrane bioreactor (AnMBR) and upflow anaerobic sludge blanket (UASB) were tested under a continuous operational mode. Due to the higher fouling propensity of the UASB effluent, membrane fouling was more drastic, leading to a greater decline in the CH4 desorption flux with respect to the operational time. Also, the flux was observed to be influenced by the gas-liquid contact time and declined more severely with increasing liquid velocity. Membrane characterization revealed cake layer formation as the source of membrane fouling while foulants characterization indicated that the majority of the foulants were protein-like-substances with fluorescence spectra showing signals close to that of extracellular polymeric substances. On this basis, a mass transfer analysis was performed to understand the fouling resistance exerted by the cake layer and identify a parameter which best described the fouling mechanism. It was found that cake thickness can be used to express the change in fouling resistance in the case of the AnMBR effluent, while cake porosity was a better parameter in the case of the UASB effluent.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Rongwong, Wichitpan
Goh, Kunli
Sethunga, Godakooru Sethunga Mudiyanselage Dilhara Prebhashwari
Bae, Tae-Hyun
format Article
author Rongwong, Wichitpan
Goh, Kunli
Sethunga, Godakooru Sethunga Mudiyanselage Dilhara Prebhashwari
Bae, Tae-Hyun
author_sort Rongwong, Wichitpan
title Fouling formation in membrane contactors for methane recovery from anaerobic effluents
title_short Fouling formation in membrane contactors for methane recovery from anaerobic effluents
title_full Fouling formation in membrane contactors for methane recovery from anaerobic effluents
title_fullStr Fouling formation in membrane contactors for methane recovery from anaerobic effluents
title_full_unstemmed Fouling formation in membrane contactors for methane recovery from anaerobic effluents
title_sort fouling formation in membrane contactors for methane recovery from anaerobic effluents
publishDate 2021
url https://hdl.handle.net/10356/151159
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