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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Liang-Liang Wei
  • Kun Wang
  • Qing-Liang Zhao
  • Jun-Qiu Jiang
  • Xiang-Juan Kong

Detail(s)

Original languageEnglish
Pages (from-to)4387-4396
Journal / PublicationWater Research
Volume46
Issue number14
Publication statusPublished - 15 Sept 2012
Externally publishedYes

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.

Research Area(s)

  • Biodegradable rate, Extracellular polymeric substances, Extraction methods, Fractionation, Sludge

Bibliographic 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 lbscholars@cityu.edu.hk.

Citation Format(s)

Fractional, biodegradable and spectral characteristics of extracted and fractionated sludge extracellular polymeric substances. / Wei, Liang-Liang; Wang, Kun; Zhao, Qing-Liang et al.
In: Water Research, Vol. 46, No. 14, 15.09.2012, p. 4387-4396.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review