Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR)

In this study, the production, composition, and characteristics of dissolved organic matter (DOM) in an anoxic-aerobic submerged membrane bioreactor (MBR) were investigated. The average concentrations of proteins and carbohydrates in the MBR aerobic stage were 3.96 ± 0.28 and 8.36 ± 0.89 mg/L, respe...

Full description

Saved in:
Bibliographic Details
Main Authors: Zhang, Dongqing, Trzcinski, Antoine Prandota, Luo, Jinxue, Stuckey, David C., Tan, Soon Keat
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2020
Subjects:
Online Access:https://hdl.handle.net/10356/144671
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-144671
record_format dspace
spelling sg-ntu-dr.10356-1446712020-11-18T02:47:44Z Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR) Zhang, Dongqing Trzcinski, Antoine Prandota Luo, Jinxue Stuckey, David C. Tan, Soon Keat School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Engineering::Environmental engineering Waste Disposal Bioreactors In this study, the production, composition, and characteristics of dissolved organic matter (DOM) in an anoxic-aerobic submerged membrane bioreactor (MBR) were investigated. The average concentrations of proteins and carbohydrates in the MBR aerobic stage were 3.96 ± 0.28 and 8.36 ± 0.89 mg/L, respectively. After membrane filtration, these values decreased to 2.9 ± 0.2 and 2.8 ± 0.2 mg/L, respectively. High performance size exclusion chromatograph (HP-SEC) analysis indicated a bimodal molecular weight (MW) distribution of DOMs, and that the intensities of all the peaks were reduced in the MBR effluent compared to the influent. Three-dimensional fluorescence excitation emission matrix (FEEM) indicated that fulvic and humic acid-like substances were the predominant DOMs in biological treatment processes. Precise identification and characterization of low-MW DOMs was carried out using gas chromatography-mass spectrometry (GC-MS). The GC-MS analysis indicated that the highest peak numbers (170) were found in the anoxic stage, and 54 (32%) compounds were identified with a similarity greater than 80%. Alkanes (28), esters (11), and aromatics (7) were the main compounds detected. DOMs exhibited both biodegradable and recalcitrant characteristics. There were noticeable differences in the low-MW DOMs present down the treatment process train in terms of numbers, concentrations, molecular weight, biodegradability, and recalcitrance. 2020-11-18T02:47:44Z 2020-11-18T02:47:44Z 2018 Journal Article Zhang, D., Trzcinski, A. P., Luo, J., Stuckey, D. C., & Tan, S. K. (2018). Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR). Environmental Science and Pollution Research, 25(5), 4289–4302. doi:10.1007/s11356-017-0586-x 1614-7499 https://hdl.handle.net/10356/144671 10.1007/s11356-017-0586-x 29181749 5 25 4289-4302 4302 en Environmental Science and Pollution Research © 2017 Springer-Verlag GmbH Germany. 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
Waste Disposal
Bioreactors
spellingShingle Engineering::Environmental engineering
Waste Disposal
Bioreactors
Zhang, Dongqing
Trzcinski, Antoine Prandota
Luo, Jinxue
Stuckey, David C.
Tan, Soon Keat
Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR)
description In this study, the production, composition, and characteristics of dissolved organic matter (DOM) in an anoxic-aerobic submerged membrane bioreactor (MBR) were investigated. The average concentrations of proteins and carbohydrates in the MBR aerobic stage were 3.96 ± 0.28 and 8.36 ± 0.89 mg/L, respectively. After membrane filtration, these values decreased to 2.9 ± 0.2 and 2.8 ± 0.2 mg/L, respectively. High performance size exclusion chromatograph (HP-SEC) analysis indicated a bimodal molecular weight (MW) distribution of DOMs, and that the intensities of all the peaks were reduced in the MBR effluent compared to the influent. Three-dimensional fluorescence excitation emission matrix (FEEM) indicated that fulvic and humic acid-like substances were the predominant DOMs in biological treatment processes. Precise identification and characterization of low-MW DOMs was carried out using gas chromatography-mass spectrometry (GC-MS). The GC-MS analysis indicated that the highest peak numbers (170) were found in the anoxic stage, and 54 (32%) compounds were identified with a similarity greater than 80%. Alkanes (28), esters (11), and aromatics (7) were the main compounds detected. DOMs exhibited both biodegradable and recalcitrant characteristics. There were noticeable differences in the low-MW DOMs present down the treatment process train in terms of numbers, concentrations, molecular weight, biodegradability, and recalcitrance.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Zhang, Dongqing
Trzcinski, Antoine Prandota
Luo, Jinxue
Stuckey, David C.
Tan, Soon Keat
format Article
author Zhang, Dongqing
Trzcinski, Antoine Prandota
Luo, Jinxue
Stuckey, David C.
Tan, Soon Keat
author_sort Zhang, Dongqing
title Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR)
title_short Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR)
title_full Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR)
title_fullStr Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR)
title_full_unstemmed Fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (MBR)
title_sort fate and behavior of dissolved organic matter in a submerged anoxic-aerobic membrane bioreactor (mbr)
publishDate 2020
url https://hdl.handle.net/10356/144671
_version_ 1688665303712530432