Techno-economic analysis of a conceptual biofuel production process from bioethylene produced by photosynthetic recombinant cyanobacteria

摘要: Ethylene is a petrochemical produced in large volumes worldwide. It serves as building block for wide variety of plastics, textiles, and chemicals, can be converted into liquid transportation fuels. There great interest the development technologies that produce ethylene from renewable resources, such biologically derived CO2 biomass. One metabolic pathways used by microbes to via an ethylene-forming enzyme (EFE). By expressing bacterial EFE gene cyanobacterium, has been through photosynthetic carbon fixation. Here, we present conceptual design techno-economic analysis process biofuel production based on upgradation generated recombinant cyanobacterium. This focuses potential near-term long-term cost projections integrated fuels ethylene. The are important showing this technology determining research thrusts needed reach target goals. base case midterm projection using tubular photobioreactors cyanobacterial growth production, cryogenic distillation separation purification, two-step Ziegler oligomerization with subsequent hydrotreatment fuel wastewater treatment utilizes anaerobic digestion minimum selling price (MFSP) $15.07 per gallon gasoline equivalent (GGE). Near-term $28.66 GGE $5.36 GGE, respectively. Single- multi-point sensitivity analyses conducted determine relative effect chosen variables could have overall costs. identifies several key improving economics outlines strategies guide future directions. productivity largest calculated number incorporated model (i.e., quantum requirement, photon transmission efficiency, percent energy going either or biomass production).