General Information
    • ISSN: 2010-0264 (Print)
    • Abbreviated Title: Int. J. Environ. Sci. Dev.
    • Frequency: Monthly
    • DOI: 10.18178/IJESD
    • Editor-in-Chief: Prof. Richard Haynes
    • Executive Editor: Ms. Nancy Y. Liu
    • Abstracting/ Indexing: Scopus (Since 2019), Chemical Abstracts Services (CAS), EBSCO, CABI, Ulrich Periodicals Directory, Electronic Journals Library, Crossref, ProQuest.
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The University of Queensland, Australia
It is my honor to be the editor-in-chief of IJESD. The journal publishes good papers in the field of environmental science and development.
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IJESD 2018 Vol.9(2): 43-48 ISSN: 2010-0264
doi: 10.18178/ijesd.2018.9.2.1071

Influence of Organic Loading Rate on the Anaerobic Digestion of Mixed Faecal Sludge and Organic Waste

Hoang Le Phuong
Abstract—The aim of this study was to investigate the effect of substrate loading rate on anaerobic digestion using composite biogas tank with the climate of Vietnam. The study was done in three trails with fresh material was faecal sludge (FS) and organic waste (OW) mixed at ratio FS:OW = 3:1 about weight. The fesh material was loaded batch and kept for digestion in 30 days after that the reactor was operated at three different loading rates VS = 1.0±0.1 kgVS/ in trail 1, 1.5±0.1 kgVS/ in trail 2 and 2.0±0.1 kgVS/ in trail 3. The obtained results during anaerobic digestion indicated that when increased loading rate from 1.0±0.1 kgVS/ to 1.5±0.1 kgVS/ the yeild biogas also rised from 284 Nl/kgVS of the feed to 490.32 Nl/kgVS of the feed with CH4 content higher than 60%. However, at loading rate 2±0.1 kgVS/ the yield of biogas product reduced to 236.11 Nl/kgVS of the feed with CH4 content lower than 50 %. It can see that the organic loading rate 1.5±0.1 kgVS/ is suitable for anaerobic co-digestion of faecal sludge and organic waste.

Index Terms—Anaerobic digestion, biogas, faecal sludge, organic loading rate.

Hoàng Lê Phương is with Thai Nguyen University of Technology, Thai Nguyen Province, Vietnam (e-mail:


Cite: Hoang Le Phuong, "Influence of Organic Loading Rate on the Anaerobic Digestion of Mixed Faecal Sludge and Organic Waste," International Journal of Environmental Science and Development vol. 9, no. 2, pp. 43-48, 2018.

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