Characterization of products from hydrothermal carbonization of orange pomace including anaerobic digestibility of process liquor. (November 2015)

• Record Type: Journal Article
• Authors: Erdogan, Ezgi; Atila, Buse; Mumme, Jan; Reza, M. Toufiq; Toptas, Asli; Elibol, Murat; Yanik, Jale
• Is Part Of: Bioresource technology. Volume 196(2015)
• Page Start: 35
• Page End: 42
• Publication Date: 2015-11
• Subjects: Hydrothermal carbonization -- Orange pomace -- Anaerobic digestion -- Hydrochar -- Biogas; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2015.06.115
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: HTC is a promising process for production of hydrochar from orange pomace. Spent liquor was used as feedstocks for biogas production. No PAHs were detected in the hydrochars. Heavy metal contents in hydrochars were found below limits. Abstract: In this study, the effect of the temperature and reaction time on hydrothermal carbonization (HTC) of orange pomace was investigated. In addition, a set of anaerobic batch tests were performed to determine the resulting biogas and methane potential of the spent liquor. Hydrochar yields followed a decreasing trend with the increasing temperature, whereas reaction time had no considerably effect on the yield. The evolution of the H/C and O/C atomic ratios from the raw material to the hydrochars suggested that dehydration reactions prevail during HTC. The hydrochars tended to become enriched in Ca, Mg and P minerals by increasing HTC temperature. The heavy metal contents in hydrochars were found below limits and no PAH compound was detected. Anaerobic digestion tests showed that the aqueous phase from HTC can be used as feedstocks for biogas production.