Journal
JOURNAL OF CLEANER PRODUCTION
Volume 201, Issue -, Pages 14-21Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2018.08.061
Keywords
Organic waste; Anaerobic digestion; Short-chain fatty acid; Biobutanol
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Funding
- New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from Ministry of Trade, Industry & Energy, Republic of Korea [20163010092290]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20163010092290] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study highlights a novel method for the production of bioalcohols, like 1-butanol, from organic waste-derived volatile fatty acids (VFAs) via non-biological pathways. A strategic two-step process was conducted to afford the bioalcohols. The process consists of esterification of VFAs to form VFA methyl esters (VFAMEs) followed by hydrogenation to bioalcohols. In the first step, carbon nanotubes was determined to be an effective carbon material to convert VFA to VFAME with high yields (>90%). In the second step, various metals (Pt, Pd, Rh, Ru, Ni, Co, and Cu) were tested and the inexpensive cobalt was the most active metal for hydrogenation of VFAMEs to their corresponding alcohols. The final yield of 1-butanol via the two-step process was 19 wt.%, which is comparable to that of conventional fermentation processes. Given the massive generation of organic waste, the two-step process to produce bio-butanol has excellent potential for being developed in large scale. (C) 2018 Elsevier Ltd. All rights reserved.
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