Fractionation of organic matters in sludge rejected by NF membrane

B. N. Tsai; C. H. Chang; D. J. Lee; J. Y. Lai

doi:10.1016/j.desal.2007.09.108

Fractionation of organic matters in sludge rejected by NF membrane

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

Overview

10 Scopus Citations

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Author(s)

B. N. Tsai
C. H. Chang
D. J. Lee
J. Y. Lai

Detail(s)

Original language	English
Pages (from-to)	386-392
Journal / Publication	Desalination
Volume	234
Issue number	1-3
Publication status	Published - 31 Dec 2008
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.desal.2007.09.108 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-55049139023&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(d2660262-708f-4774-be80-465768e46422).html

Abstract

Nanofiltration membrane bioreactor (NF-MBR) was proposed to provide quality effluent free of virus and most large organic substances. The dissolved organic matter (DOM) in soluble microbial products (SMP), loosely bound extracellular polymeric substances (LBEPS) and tightly bound extracellular polymeric substances (TBEPS) of wastewater sludge before and filtered through nanofiltration membrane were fractioned using size exclusion chromatography, characterized with ultraviolet absorbance at 230, 254 and 280 nm, dissolved oganic carbon (DOC) content, and excitation-emission-matrix (EEM) spectra. Except for long-chain organic acids, the membrane rejected most organic matters in SMP and LBEPS fractions. However, the membrane failed to reject fluorescent DOM from TBEPS at molecular weight of 3000-7000 Da. The content of TBEPS in the mixed liquor affected significantly the effluent quality in NF-MBR application. © 2008 Elsevier B.V. All rights reserved.

Research Area(s)

DOC, EEM, EPS, Filtration, SEC, Sludge, SMP

Bibliographic Note

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