Journal
APPLIED ENERGY
Volume 252, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2019.113482
Keywords
Short-chain fatty acid; Waste-to-energy; Techno-economic analysis; Biofuel; Butanol
Categories
Funding
- New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry & Energy, Republic of Korea [20163010092290]
- National Research Foundation of Korea (NRF) - Korean Government (Ministry of Education) [2018R1D1A1A09082841]
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Catalysis Science Program [DE-SC0018408]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20163010092290] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2018R1D1A1A09082841] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- U.S. Department of Energy (DOE) [DE-SC0018408] Funding Source: U.S. Department of Energy (DOE)
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This article presents the full study (lab-scale experimental study and large-scale techno-economic analysis) results of a two-step catalytic process for the conversion of organic waste-derived butyric acid to butanol. The two-step process consists of the (1) esterification of butyric acid to methyl butyrate and (2) hydrogenolysis of this methyl butyrate to butanol. The first reaction, esterification of butyric acid, was optimized using carbon-based catalysts. The production of butanol from methyl butyrate via hydrogenolysis was investigated using bimetallic Pt-Co catalysts. The hydrogenolysis of methyl butyrate on these catalysts under optimal conditions of 250 degrees C, 5 MPa H-2, and a feed/catalyst weight ratio of 11.2 led to 54.1% selectivity toward 1-butanol. Based on the experimental results, an integrated process simulation model was developed to determine the economic potential of the two-step production of butanol from butyric acid. Using this model, the techno-economic feasibility of the two-step process was analyzed. The minimum selling price (MSP) of 1-butanol produced from butyric acid using this process was US$ 3.388 per gallon of gasoline equivalent (GGE). This MSP is in the range of recent biofuel market prices of US$ 2.03/GGE to US$ 3.83/GGE.
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