Extracellular biological organic matters in sewage sludge during mesophilic digestion at reduced hydraulic retention time

Liang-Liang Wei; Qing-Liang Zhao; Kai Hu; Duu-Jong Lee; Chun-Mei Xie; Jun-Qiu Jiang

doi:10.1016/j.watres.2010.11.003

Author(s)

Liang-Liang Wei
Qing-Liang Zhao
Kai Hu
Chun-Mei Xie
Jun-Qiu Jiang

Detail(s)

Original language	English
Pages (from-to)	1472-1480
Journal / Publication	Water Research
Volume	45
Issue number	3
Publication status	Published - Jan 2011
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.watres.2010.11.003 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-78650554144&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(06bf2079-4113-4da1-bb7f-1e446834d9a5).html

Abstract

To operate an anaerobic digester at low hydraulic retention time (HRT) is welcome in practice. This study characterized the extracellular biological organic matter (EBOM) and supernatant organics for a sewage sludge digested in a lab-scale mesophilic digester (5 l) running at an HRT of 20, 15 or 10 d. The hydrophilic and hydrophobic acid fractions were the principal components in the sludge EBOM. The hydrolysis rates for hydrophobic acid fraction related EBOM at 10 d HRT and that of hydrophilic fraction related proteins in supernatant at 20 d HRT limited the anaerobic processes. Improved hydrolysis of soluble hydrophilic fraction assisted improving digester performance at 20 d HRT. To shorten digestion HRT, efficiency of hydrophobic acid fraction hydrolysis has to be practiced. © 2010 Elsevier Ltd.

Research Area(s)

Anaerobic digestion, Extracellular biological organic matter, Fractionation, Rate-limiting step, Sludge, Supernatant organics

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 [email protected].

Citation Format(s)

[ RIS ] [ BibTeX ]

Extracellular biological organic matters in sewage sludge during mesophilic digestion at reduced hydraulic retention time. / Wei, Liang-Liang; Zhao, Qing-Liang; Hu, Kai et al.
In: Water Research, Vol. 45, No. 3, 01.2011, p. 1472-1480.

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

Wei, L-L, Zhao, Q-L, Hu, K, Lee, D-J, Xie, C-M & Jiang, J-Q 2011, 'Extracellular biological organic matters in sewage sludge during mesophilic digestion at reduced hydraulic retention time', Water Research, vol. 45, no. 3, pp. 1472-1480. https://doi.org/10.1016/j.watres.2010.11.003

Wei, L.-L., Zhao, Q.-L., Hu, K., Lee, D.-J., Xie, C.-M., & Jiang, J.-Q. (2011). Extracellular biological organic matters in sewage sludge during mesophilic digestion at reduced hydraulic retention time. Water Research, 45(3), 1472-1480. https://doi.org/10.1016/j.watres.2010.11.003

Wei LL, Zhao QL, Hu K, Lee DJ, Xie CM, Jiang JQ. Extracellular biological organic matters in sewage sludge during mesophilic digestion at reduced hydraulic retention time. Water Research. 2011 Jan;45(3):1472-1480. doi: 10.1016/j.watres.2010.11.003

Wei, Liang-Liang ; Zhao, Qing-Liang ; Hu, Kai et al. / Extracellular biological organic matters in sewage sludge during mesophilic digestion at reduced hydraulic retention time. In: Water Research. 2011 ; Vol. 45, No. 3. pp. 1472-1480.