期刊
BIORESOURCE TECHNOLOGY
卷 268, 期 -, 页码 568-576出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.08.036
关键词
Ultrasound; Ozonation; Peroxidation; First-order kinetics; Biogas
资金
- Agency for Innovation by Science and Technology located in Flanders, Belgium (IWT) [150156]
- FWO
- Research Foundation - Flanders, Belgium [1S68017N]
Recently, digestate disintegration gained interest as an alternative strategy to feedstock pretreatment for anaerobic digestion. This study evaluated the effect of three different digestate disintegration methods (hydrogen peroxidation, ozone treatment and ultrasound) on manure digestate, potato waste digestate and mixed organic waste digestate. Lab-scale anaerobic digestion experiments were carried out by adding disintegrated digestate to the related substrate and inoculum with simulated recycle ratios of 0.2 and 0.5. Ultrasound disintegration of potato waste digestate yields 22.5% increase in biogas production. An increase in biogas production was linked to the treated digestate amount and the treatment dosage. First order model was used to investigate the effect of digestate disintegration on the first order reaction rate constant (k). The decrease in k and increase in biogas production were linearly correlated. This correlation was explained by the increased bioavailability of the organic matter and possible negative effects of digestate disintegration on the microorganisms.
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