Techno-Economic Analysis of Producing Glacial Acetic Acid from Poplar Biomass via Bioconversion

Most of the current commercial production of glacial acetic acid (GAA) is by petrochemical routes, primarily methanol carbonylation. GAA is an intermediate in the production of plastics, textiles, dyes, and paints. GAA production from biomass might be an economically viable and sustainable alternati...

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Published inMolecules (Basel, Switzerland) Vol. 25; no. 18; p. 4328
Main Authors Morales-Vera, Rodrigo, Crawford, Jordan, Dou, Chang, Bura, Renata, Gustafson, Rick
Format Journal Article
LanguageEnglish
Published Switzerland MDPI 21.09.2020
MDPI AG
Subjects
acetic acid
Acetic Acid - isolation & purification
Acetic Acid - metabolism
bioconversion
Biomass
biorefinery
Biotransformation
Costs and Cost Analysis
poplar
Populus - metabolism
techno-economics assessment
biorefinery
biomass
poplar
techno-economics assessment
bioconversion
platform chemicals
acetic acid
organic acids
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Summary:Most of the current commercial production of glacial acetic acid (GAA) is by petrochemical routes, primarily methanol carbonylation. GAA is an intermediate in the production of plastics, textiles, dyes, and paints. GAA production from biomass might be an economically viable and sustainable alternative to petroleum-derived routes. Separation of acetic acid from water is a major expense and requires considerable energy. This study evaluates and compares the technical and economic feasibility of GAA production via bioconversion using either ethyl acetate or alamine in diisobutylkerosene (DIBK) as organic solvents for purification. Models of a GAA biorefinery with a production of 120,650 tons/year were simulated in Aspen software. This biorefinery follows the path of pretreatment, enzymatic hydrolysis, acetogen fermentation, and acid purification. Estimated capital costs for different scenarios ranged from USD 186 to 245 million. Recovery of GGA using alamine/DIBK was a more economical process and consumed 64% less energy, due to lower steam demand in the recovery distillation columns. The estimated average minimum selling prices of GGA were USD 756 and 877/ton for alamine/DIBK and ethyl acetate scenarios, respectively. This work establishes a feasible and sustainable approach to produce GGA from poplar biomass via fermentation.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules25184328