초록
<P>The minimum selling price (MSP), specific energy consumption, and greenhouse (GHG) emissions resulting from biobased production of adipic acid, succinic acid, 1,3-propanediol, 3-hydroxy propionic acid, and isobutanol were estimated for various combinations of titer, yield, and volumetric productivity. The MSP, energy consumption, and GHG emissions of anaerobic biobased commodity chemical processes were found to be nearly the same for a given titer, yield, and productivity. The estimated MSP of biobased commodity chemicals produced via aerobic respiration was found to be nearly 30% higher than those of produced through anaerobic fermentation. It was determined that biocatalyst yields of ≥0.32 g/g and titers of ≥45 g/L result in lower production cost, energy consumption, and GHG emissions, when compared to conventional petrochemical production processes. The economic and environmental benefits of improving titer beyond 125 g/L and volumetric productivity beyond 2 g/L·h were found to be low when producing biobased commodity chemicals using a biocatalyst. Comparative economic analysis indicated that provision of feedstock is the dominant cost in commercially viable biobased commodity chemical production systems.</P><P>Generalities in terms of target price are determined to guide the development of sustainable biorenewable chemical and fuel technologies.</P><P><B>Graphic Abstract</B><BR><IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ascecg/2017/ascecg.2017.5.issue-9/acssuschemeng.7b01729/production/images/medium/sc-2017-017294_0002.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/sc7b01729'>ACS Electronic Supporting Info</A></P>