Effect of trace element addition and increasing organic loading rates on the anaerobic digestion of cattle slaughterhouse wastewater
Article
Article Title | Effect of trace element addition and increasing organic loading rates on the anaerobic digestion of cattle slaughterhouse wastewater |
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ERA Journal ID | 3454 |
Article Category | Article |
Authors | Schmidt, Thomas (Author), McCabe, Bernadette (Author), Harris, Peter (Author) and Lee, Seonmi (Author) |
Journal Title | Bioresource Technology |
Journal Citation | 264 (September), pp. 51-57 |
Number of Pages | 7 |
Year | 2018 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0960-8524 |
1873-2976 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.biortech.2018.05.050 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0960852418307107 |
Abstract | In this study, anaerobic digestion of slaughterhouse wastewater with the addition of trace elements was monitored for biogas quantity, quality and process stability using CSTR digesters operated at mesophilic temperature. The determination of trace element concentrations was shown to be deficient in Fe, Ni, Co, Mn and Mo compared to recommendations given in the literature. Addition of these trace elements resulted in enhanced degradation efficiency, higher biogas production and improved process stability. Higher organic loading rates and lower hydraulic retention times were achieved in comparison to the control digesters. A critical accumulation of volatile fatty acids was observed at an organic loading rate of 1.82 g L–1 d–1 in the control compared to 2.36 g L–1 d–1 in the digesters with trace element addition. The improved process stability was evident in the final weeks of experimentation, in which control reactors produced 84% less biogas per day compared to the reactors containing trace elements. |
Keywords | continuous digestion; CSTR; abattoir; process stability; fats, oils and greases; red meat processing |
ANZSRC Field of Research 2020 | 310603. Fermentation |
401102. Environmentally sustainable engineering | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National Centre for Engineering in Agriculture |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4v1z/effect-of-trace-element-addition-and-increasing-organic-loading-rates-on-the-anaerobic-digestion-of-cattle-slaughterhouse-wastewater
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