Laboratory analyses for assessing the potential for biogas production of various agricultural residues in Greece
Laen...
Kuupäev
2021
Kättesaadavus
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
Greece produces significant amounts of agricultural and livestock waste. For the needs
of this study, Greece was divided into a Northern and a Southern part and relevant proposals were
made for residues that can be used for energy production, through anaerobic digestion. For
Northern Greece, this study concluded that the most abundant residues and potential substrates
for anaerobic digestion valorisation are those of maize, inedible vegetables (including greenhouse
vegetables), cattle manure, as well as the residues of beer and wine industry. For Southern Greece,
the corresponding substrates are those of maize, inedible vegetables, sheep/goat manure and
residues of wine, tomato, orange and olive processing, respectively. Based on the
physicochemical characterization of individual feedstocks, corn silage, tomato husks,
watermelon, malt, cattle manure, orange, and olive processing residues (olive pomace) were
considered as the most suitable feedstocks for anaerobic digestion. Biochemical Methane
Potential (BMP) assays for Northern Greece were also performed, testing the most abundant and
appropriate residues for anaerobic digestion (of this area), namely corn silage, cattle manure and
malt, in order to define their BMP yield as well as their prospective optimum mixtures. It was
concluded that the BMP of the mono-substrates is in accordance with literature, while there were
no statistically significant differences in the methane yield of all tested mixtures. The residual
biomass originating from the three main categories of the agricultural sector (crop residues,
agro-industrial residues, and animal manure) in Northern Greece can be efficiently valorised via
anaerobic co-digestion, without observing, though, any synergistic effects on methane
production.
Kirjeldus
Received: February 23rd, 2021 ; Accepted: May 27th, 2021 ; Published: June 8th, 2021 ; Correspondence: kornaros@chemeng.upatras.gr, vgpapadakis@upatras.gr
Märksõnad
agricultural residues, anaerobic digestion, biogas, BMP assays, Greece, residue characterization, articles