Cara van Heerden, Catharine Elizabeth Bosman, Somayeh Farzad, Johann Ferdinand Görgens
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Techno-economics and environmental assessment of sorbitol and itaconic acid production from sugarcane-based feedstock
Production of sorbitol or itaconic acid from sugarcane feedstocks in energy self-sufficient biorefinery scenarios were investigated, via Aspen Plus® simulations, techno-economic and environmental assessments. Sorbitol co-produced with fructose from A-molasses had a minimum selling price (MSP) (0.81 $/kg) similar to technical-grade sorbitol market prices (0.5 to 1.1 $/kg), and an internal rate of return (IRR) of 19.65%. Sorbitol co-produced with mannitol from A-molasses had a lower MSP (0.48 $/kg), below food-grade sorbitol prices (0.58 $/kg) and a higher IRR (23.63%). Combining A-molasses with lignocelluloses for the co-production of sorbitol and mannitol increased the MSP (0.63 $/kg) above the market price and decreased the IRR (18.46%). This scenario also had greenhouse gas emissions lower than that of its A-molasses only counterpart, mainly due to the method of hydrogen production. Itaconic acid production from sugarcane feedstocks in similar scenarios was unattractive due to lower IRRs (4.49% to 11.61%).
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Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline.
Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.
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