LAPSE:2023.34370
Published Article
LAPSE:2023.34370
An Evaluation of the Effects of the Potato Starch on the Biogas Produced from the Anaerobic Digestion of Potato Wastes
April 25, 2023
Anaerobic digestion (AD) has undergone many developments since its first appearance. Despite that, there are still some environmental and economical obstacles that are limiting its sustainability. On the other hand, different types of starch have proven their effectiveness in some different applications. Food processing industries are considered one of the largest generators of waste in the environment. With an aid of the response surface methodology (RSM), the proposed study aimed to find an optimised way to overcome the obstacles by studying the impacts of the starch isolated from the potato peels on the biogas produced from the AD of potato peels before and after starch separation. The study found that potato peels represented approximately 12.5% of the potato total weight. The starch has only a slight influence on the quantity of the biogas produced and much lower influences on its quality. This finding suggests further investigation is required on the production of starch bio-based products simultaneously with the biogas and bio-slurry, which may mitigate environmental influences and economical obstacles of AD and make it more commercially attractive. The study showed also that the highest energy gain by the g-VS/0.2 L of potato peels was 62.9% at 35 °C, 1.62 g-VS/0.2 L organic concentration and 50% sludge concentration, which yielded a maximum CH4 of 72.4%.
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Keywords
anaerobic digestion, bioenergy, bioproducts, biorefinery, potato starch, response surface methodology, waste management
Subject
Suggested Citation
Alrefai R, Alrefai A, Benyounis K, Stokes J. An Evaluation of the Effects of the Potato Starch on the Biogas Produced from the Anaerobic Digestion of Potato Wastes. (2023). LAPSE:2023.34370
Author Affiliations
Alrefai R: School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Dublin, Ireland [ORCID]
Alrefai A: School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Dublin, Ireland
Benyounis K: School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Dublin, Ireland
Stokes J: School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Dublin, Ireland
Alrefai A: School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Dublin, Ireland
Benyounis K: School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Dublin, Ireland
Stokes J: School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Dublin, Ireland
Journal Name
Energies
Volume
13
Issue
9
Article Number
E2399
Year
2020
Publication Date
2020-05-11
ISSN
1996-1073
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Original Submission
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PII: en13092399, Publication Type: Journal Article
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Published Article
LAPSE:2023.34370
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https://doi.org/10.3390/en13092399
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[v1] (Original Submission)
Apr 25, 2023
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Apr 25, 2023
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