Biological thermophilic post hydrolysis of digestate enhances the biogas production in the anaerobic digestion of agro-waste

D. Bolzonella, F. Battista, A. Mattioli, C. Nicolato, N. Frison and S. Lampis

Renewable and Sustainable Energy Reviews, 2020, vol. 134, issue C

Abstract: A thermophilic post-hydrolysis process was applied to the effluent digestate of an anaerobic digester treating agro-waste to further solubilize biorecalcitrant organic polymers and, by recirculating back hydrolysate to the anaerobic reactor, increase the biogas production. The thermophilic reactor operated at 3 days hydraulic retention time determined a clear increase in the concentrations of both soluble organic matter (as COD) and volatile fatty acids: concentrations increased by 25% and 65%, respectively. As a consequence, the recirculation of this post-treated stream to the digester determined an increase in biogas production of 30% on average with respect to the case without thermal post treatment.

Keywords: Agro-waste; Anaerobic digestion; Biogas; Thermophilic; Post-hydrolysis; Microbioma (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S1364032120304652
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:rensus:v:134:y:2020:i:c:s1364032120304652

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/600126/bibliographic
http://www.elsevier. ... 600126/bibliographic

DOI: 10.1016/j.rser.2020.110174

Access Statistics for this article

Renewable and Sustainable Energy Reviews is currently edited by L. Kazmerski

More articles in Renewable and Sustainable Energy Reviews from Elsevier
Bibliographic data for series maintained by Catherine Liu ().