Abstract：
: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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Somers MH,Azman S,Sigurnjak I,Ghyselbrecht K,Meers E,Meesschaert B,Appels Ldoi
10.1016/j.biortech.2018.08.036subject
Has Abstractpub_date
2018-11-01 00:00:00pages
568-576eissn
0960-8524issn
1873-2976pii
S0960-8524(18)31130-1journal_volume
268pub_type
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