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Two-stage anaerobic digestion: State of technology and perspective roles in future energy systems.
- Source :
-
Bioresource technology [Bioresour Technol] 2022 Sep; Vol. 360, pp. 127633. Date of Electronic Publication: 2022 Jul 18. - Publication Year :
- 2022
-
Abstract
- Two-stage anaerobic digestion (TSAD) systems have been studied on a laboratory scale for about 50 years. However, they have not yet reached industrial scale despite their potential for future energy systems. This review provides an analysis of the TSAD technology, including the influence of process parameters on biomass conversion rates. The most common substrate (35.2% of the 38 selected studies) used in the analysed data was in the category of rapidly hydrolysable industrial waste with an average dry matter content of 7.24%. The highest methane content of 85% was reached when digesting food waste in a combination of two mesophilic continuously stirred tank reactors with an acidic (pH 5.5) first stage and alkaline (pH 7) second stage. Therefore, the review shows the limitations of the TSAD technology, future research directions, and the effect of integration of TSAD systems into the current strategy to reduce greenhouse gas emissions.<br /> (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Subjects :
- Anaerobiosis
Biofuels
Food
Methane
Bioreactors
Refuse Disposal
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 360
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 35863602
- Full Text :
- https://doi.org/10.1016/j.biortech.2022.127633