Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor

Mohd Atiqueuzzaman Khan; Huu Hao Ngo; Wenshan Guo; Soon Woong Chang; Dinh Duc Nguyen; Sunita Varjani; Yi Liu; Lijuan Deng; Chen Cheng

doi:10.1016/j.biortech.2019.03.073

Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor

Mohd Atiqueuzzaman Khan, Huu Hao Ngo^*, Wenshan Guo, Soon Woong Chang, Dinh Duc Nguyen, Sunita Varjani, Yi Liu, Lijuan Deng, Chen Cheng

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

63 Citations (Scopus)

Abstract

This study investigated the production of major volatile fatty acid (VFA) components in an anaerobic membrane bioreactor (AnMBR) to treat low-strength synthetic wastewater. No selective inhibition was applied for methane production and solvent-extraction method was used for VFA extraction. The results showed acetic and propionic acid were the predominant VFA components at pH 7.0 and 6.0 with concentrations of 1.444 ± 0.051 and 0.516 ± 0.032 mili-mol/l respectively. At pH 12.0 isobutyric acid was the major VFA component with a highest concentration of 0.712 ± 0.008 mili-mol/l. The highest VFA yield was 48.74 ± 1.5 mg VFA/100 mg COD_feed at pH 7.0. At different pH, AnMBR performance was evaluated in terms of COD, nutrient removal and membrane fouling rate. It was observed that the membrane fouled at a faster rate in both acidic and alkaline pH conditions, the slowest rate in membrane fouling was observed at pH 7.0. © 2019 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	120-128
Number of pages	9
Journal	Bioresource Technology
Volume	283
Online published	16 Mar 2019
DOIs	https://doi.org/10.1016/j.biortech.2019.03.073
Publication status	Published - Jul 2019
Externally published	Yes

Research Keywords

Anaerobic
Fouling
Volatile fatty acids
Wastewater
pH

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2019.03.073

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title = "Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor",

abstract = "This study investigated the production of major volatile fatty acid (VFA) components in an anaerobic membrane bioreactor (AnMBR) to treat low-strength synthetic wastewater. No selective inhibition was applied for methane production and solvent-extraction method was used for VFA extraction. The results showed acetic and propionic acid were the predominant VFA components at pH 7.0 and 6.0 with concentrations of 1.444 ± 0.051 and 0.516 ± 0.032 mili-mol/l respectively. At pH 12.0 isobutyric acid was the major VFA component with a highest concentration of 0.712 ± 0.008 mili-mol/l. The highest VFA yield was 48.74 ± 1.5 mg VFA/100 mg CODfeed at pH 7.0. At different pH, AnMBR performance was evaluated in terms of COD, nutrient removal and membrane fouling rate. It was observed that the membrane fouled at a faster rate in both acidic and alkaline pH conditions, the slowest rate in membrane fouling was observed at pH 7.0. {\textcopyright} 2019 Elsevier Ltd. All rights reserved.",

keywords = "Anaerobic, Fouling, Volatile fatty acids, Wastewater, pH",

author = "Khan, {Mohd Atiqueuzzaman} and Ngo, {Huu Hao} and Wenshan Guo and Chang, {Soon Woong} and Nguyen, {Dinh Duc} and Sunita Varjani and Yi Liu and Lijuan Deng and Chen Cheng",

year = "2019",

month = jul,

doi = "10.1016/j.biortech.2019.03.073",

language = "English",

volume = "283",

pages = "120--128",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor

AU - Khan, Mohd Atiqueuzzaman

AU - Ngo, Huu Hao

AU - Guo, Wenshan

AU - Chang, Soon Woong

AU - Nguyen, Dinh Duc

AU - Varjani, Sunita

AU - Liu, Yi

AU - Deng, Lijuan

AU - Cheng, Chen

PY - 2019/7

Y1 - 2019/7

N2 - This study investigated the production of major volatile fatty acid (VFA) components in an anaerobic membrane bioreactor (AnMBR) to treat low-strength synthetic wastewater. No selective inhibition was applied for methane production and solvent-extraction method was used for VFA extraction. The results showed acetic and propionic acid were the predominant VFA components at pH 7.0 and 6.0 with concentrations of 1.444 ± 0.051 and 0.516 ± 0.032 mili-mol/l respectively. At pH 12.0 isobutyric acid was the major VFA component with a highest concentration of 0.712 ± 0.008 mili-mol/l. The highest VFA yield was 48.74 ± 1.5 mg VFA/100 mg CODfeed at pH 7.0. At different pH, AnMBR performance was evaluated in terms of COD, nutrient removal and membrane fouling rate. It was observed that the membrane fouled at a faster rate in both acidic and alkaline pH conditions, the slowest rate in membrane fouling was observed at pH 7.0. © 2019 Elsevier Ltd. All rights reserved.

AB - This study investigated the production of major volatile fatty acid (VFA) components in an anaerobic membrane bioreactor (AnMBR) to treat low-strength synthetic wastewater. No selective inhibition was applied for methane production and solvent-extraction method was used for VFA extraction. The results showed acetic and propionic acid were the predominant VFA components at pH 7.0 and 6.0 with concentrations of 1.444 ± 0.051 and 0.516 ± 0.032 mili-mol/l respectively. At pH 12.0 isobutyric acid was the major VFA component with a highest concentration of 0.712 ± 0.008 mili-mol/l. The highest VFA yield was 48.74 ± 1.5 mg VFA/100 mg CODfeed at pH 7.0. At different pH, AnMBR performance was evaluated in terms of COD, nutrient removal and membrane fouling rate. It was observed that the membrane fouled at a faster rate in both acidic and alkaline pH conditions, the slowest rate in membrane fouling was observed at pH 7.0. © 2019 Elsevier Ltd. All rights reserved.

KW - Anaerobic

KW - Fouling

KW - Volatile fatty acids

KW - Wastewater

KW - pH

UR - http://www.scopus.com/inward/record.url?scp=85062898432&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2019.03.073

DO - 10.1016/j.biortech.2019.03.073

M3 - RGC 21 - Publication in refereed journal

C2 - 30901584

SN - 0960-8524

VL - 283

SP - 120

EP - 128

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Selective production of volatile fatty acids at different pH in an anaerobic membrane bioreactor

Abstract

Research Keywords

UN SDGs

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