Economic assessment of supercritical CO2 extraction of waxes as part of a maize stover biorefinery

Attard, T. M., McElroy, C. R. and Hunt, A. J. (2015) Economic assessment of supercritical CO2 extraction of waxes as part of a maize stover biorefinery. International Journal of Molecular Sciences, 16 (8). pp. 17546-17564. ISSN 1661-6596

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To date limited work has focused on assessing the economic viability of scCO<inf>2</inf> extraction to obtain waxes as part of a biorefinery. This work estimates the economic costs for wax extraction from maize stover. The cost of manufacture (COM) for maize stover wax extraction was found to be €88.89 per kg of wax, with the fixed capital investment (FCI) and utility costs (CUT) contributing significantly to the COM. However, this value is based solely on scCO<inf>2</inf> extraction of waxes and does not take into account the downstream processing of the biomass following extraction. The cost of extracting wax from maize stover can be reduced by utilizing pelletized leaves and combusting the residual biomass to generate electricity. This would lead to an overall cost of €10.87 per kg of wax (based on 27% combustion efficiency for electricity generation) and €4.56 per kg of wax (based on 43% combustion efficiency for electricity generation). A sensitivity analysis study showed that utility costs (cost of electricity) had the greatest effect on the COM.

Keywords:carbon dioxide, wax, biomass production, biorefinery, biotechnological production, cost of waste, cost utility analysis, economic aspect, electricity, freezing, gas chromatography, investment, labour cost, maize, maize stover, manufacturing cost, mass fragmentography, raw material cost, supercritical fluid extraction, biomass, chemistry, economics, isolation and purification, Plant Leaves, Waxes, Zea mays, plant leaf
Subjects:F Physical Sciences > F100 Chemistry
Divisions:College of Science > School of Chemistry
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ID Code:54766
Deposited On:04 Jul 2023 15:14

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