Production of crude bio-oil and biochar from hydrothermal conversion of jujube stones with metal carbonates

Aykac, G, Tekin, K, Karagoz, S and Madapusi, S 2018, 'Production of crude bio-oil and biochar from hydrothermal conversion of jujube stones with metal carbonates', Biofuels, vol. 9, no. 5, pp. 613-623.


Document type: Journal Article
Collection: Journal Articles

Title Production of crude bio-oil and biochar from hydrothermal conversion of jujube stones with metal carbonates
Author(s) Aykac, G
Tekin, K
Karagoz, S
Madapusi, S
Year 2018
Journal name Biofuels
Volume number 9
Issue number 5
Start page 613
End page 623
Total pages 11
Publisher Taylor and Francis
Abstract In this study, hydrothermal processing was employed to produce crude bio-oil and biochar from waste jujube stones by deploying metal carbonates as catalysts. The effects of metal carbonate catalysts (K2CO3, Na2CO3 and SrCO3) in different concentrations on the product yields and properties were tested for the conversion studies. The use of metal carbonates (K2CO3, Na2CO3 and SrCO3) increased the yield of bio-oil almost twofold, with the highest yield (18.66 wt%) obtained using K2CO3 at a concentration of 10 wt%. (E)- 9-octadecenoic acid (elaidic acid), 2,6-dimethoxyphenol (syringol) and 2-methoxyphenol (guaiacol) were some of the prominent compounds found in the crude bio-oils. The process also resulted in an efficient conversion of jujube stones to biochar with high content of oxygenated functional groups which makes it an effective precursor for various applications. The heating values of the bio-oils and biochars were significantly improved compared to those of the feedstock.
Subject Agricultural Biotechnology not elsewhere classified
Keyword(s) biochar
biocrude
Hydrothermal process
jujube stone
waste biomass
DOI - identifier 10.1080/17597269.2018.1442661
Copyright notice © 2018 Informa UK Limited, trading as Taylor & Francis Group
ISSN 1759-7269
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