期刊
CHEMICAL ENGINEERING RESEARCH & DESIGN
卷 98, 期 -, 页码 107-122出版社
ELSEVIER
DOI: 10.1016/j.cherd.2015.04.013
关键词
Techno-economic analysis; Bioethanol; Brown algae; Anaerobic digestion; Volatile fatty acids; Pervaporation
资金
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2013R1A1A1A05004852]
- Ministry of Oceans and Fisheries, Republic of Korea
- Korea Institute of Marine Science & Technology Promotion (KIMST) [201405592] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2013R1A1A1A05004852] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study evaluates the economics of production of mixed alcohols from brown algae. Mixed alcohols (MA) were generated by hydrogenation of volatile fatty acids (VFA) that were produced by anaerobic digestion (AD) of brown algae. The process units including AD, VFA recovery, hydrogenation, and MA recovery were simulated in Aspen plus v.8.4. Two alternative processes, i.e., extraction/distillation (case 1) and hybrid pervaporation (PV) combined with extraction/distillation (case 2), were considered for recovery of VFAs from the dilute fermentation broth. Techno-economic models were developed to evaluate the plant economics and calculate a minimum ethanol-selling price (MESP). Sensitivity analysis of the economic and process parameters was performed to rigorously explore the uncertainties and main parameters affecting the MESP. The respective MESPs for cases 1 and 2 were calculated to be 1.24 and 3.61 $/gal. The results of the study showed that application of PV for dilute streams results in higher capital and energy costs primarily because of increased refrigeration, heating, and membrane costs. (c) 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
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