Fractional, biodegradable and spectral characteristics of extracted and fractionated sludge extracellular polymeric substances

Liang-Liang Wei; Kun Wang; Qing-Liang Zhao; Jun-Qiu Jiang; Xiang-Juan Kong; Duu-Jong Lee

doi:10.1016/j.watres.2012.05.049

Fractional, biodegradable and spectral characteristics of extracted and fractionated sludge extracellular polymeric substances

Liang-Liang Wei, Kun Wang, Qing-Liang Zhao, Jun-Qiu Jiang, Xiang-Juan Kong, Duu-Jong Lee

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

55 Citations (Scopus)

Abstract

Correlation between fractional, biodegradable and spectral characteristics of sludge extracellular polymeric substances (EPS) by different protocols has not been well established. This work extracted sludge EPS using alkaline extractants (NH₄OH and formaldehyde + NaOH) and physical protocols (ultrasonication, heating at 80 °C or cation exchange resin (CER)) and then fractionated the extracts using XAD-8/XAD-4 resins. The alkaline extractants yielded more sludge EPS than the physical protocols. However, the physical protocols extracted principally the hydrophilic components which were readily biodegradable by microorganisms. The alkaline extractants dissolved additional humic-like substances from sludge solids which were refractory in nature. Different extraction protocols preferably extracted EPS with distinct fractional, biodegradable and spectral characteristics which could be applied in specific usages. © 2012 Elsevier Ltd.

Original language	English
Pages (from-to)	4387-4396
Journal	Water Research
Volume	46
Issue number	14
DOIs	https://doi.org/10.1016/j.watres.2012.05.049
Publication status	Published - 15 Sept 2012
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Biodegradable rate
Extracellular polymeric substances
Extraction methods
Fractionation
Sludge

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title = "Fractional, biodegradable and spectral characteristics of extracted and fractionated sludge extracellular polymeric substances",

abstract = "Correlation between fractional, biodegradable and spectral characteristics of sludge extracellular polymeric substances (EPS) by different protocols has not been well established. This work extracted sludge EPS using alkaline extractants (NH4OH and formaldehyde + NaOH) and physical protocols (ultrasonication, heating at 80 °C or cation exchange resin (CER)) and then fractionated the extracts using XAD-8/XAD-4 resins. The alkaline extractants yielded more sludge EPS than the physical protocols. However, the physical protocols extracted principally the hydrophilic components which were readily biodegradable by microorganisms. The alkaline extractants dissolved additional humic-like substances from sludge solids which were refractory in nature. Different extraction protocols preferably extracted EPS with distinct fractional, biodegradable and spectral characteristics which could be applied in specific usages. {\textcopyright} 2012 Elsevier Ltd.",

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note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

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T1 - Fractional, biodegradable and spectral characteristics of extracted and fractionated sludge extracellular polymeric substances

AU - Wei, Liang-Liang

AU - Wang, Kun

AU - Zhao, Qing-Liang

AU - Jiang, Jun-Qiu

AU - Kong, Xiang-Juan

AU - Lee, Duu-Jong

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2012/9/15

Y1 - 2012/9/15

N2 - Correlation between fractional, biodegradable and spectral characteristics of sludge extracellular polymeric substances (EPS) by different protocols has not been well established. This work extracted sludge EPS using alkaline extractants (NH4OH and formaldehyde + NaOH) and physical protocols (ultrasonication, heating at 80 °C or cation exchange resin (CER)) and then fractionated the extracts using XAD-8/XAD-4 resins. The alkaline extractants yielded more sludge EPS than the physical protocols. However, the physical protocols extracted principally the hydrophilic components which were readily biodegradable by microorganisms. The alkaline extractants dissolved additional humic-like substances from sludge solids which were refractory in nature. Different extraction protocols preferably extracted EPS with distinct fractional, biodegradable and spectral characteristics which could be applied in specific usages. © 2012 Elsevier Ltd.

AB - Correlation between fractional, biodegradable and spectral characteristics of sludge extracellular polymeric substances (EPS) by different protocols has not been well established. This work extracted sludge EPS using alkaline extractants (NH4OH and formaldehyde + NaOH) and physical protocols (ultrasonication, heating at 80 °C or cation exchange resin (CER)) and then fractionated the extracts using XAD-8/XAD-4 resins. The alkaline extractants yielded more sludge EPS than the physical protocols. However, the physical protocols extracted principally the hydrophilic components which were readily biodegradable by microorganisms. The alkaline extractants dissolved additional humic-like substances from sludge solids which were refractory in nature. Different extraction protocols preferably extracted EPS with distinct fractional, biodegradable and spectral characteristics which could be applied in specific usages. © 2012 Elsevier Ltd.

KW - Biodegradable rate

KW - Extracellular polymeric substances

KW - Extraction methods

KW - Fractionation

KW - Sludge

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U2 - 10.1016/j.watres.2012.05.049

DO - 10.1016/j.watres.2012.05.049

M3 - RGC 21 - Publication in refereed journal

C2 - 22732264

SN - 0043-1354

VL - 46

SP - 4387

EP - 4396

JO - Water Research

JF - Water Research

IS - 14

ER -

Fractional, biodegradable and spectral characteristics of extracted and fractionated sludge extracellular polymeric substances

Abstract

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Research Keywords

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