Life cycle assessment of bioethanol from corn stover from soil phytoremediation

Bioethanol is the most widely used biofuel in world. production from biomass a way to reduce crude oil consumption and environmental pollution. This work aims evaluate potential impacts of bioethanol corn stover obtained phytoremediation, comparing four different acids (Sulfuric, Nitric, Hydrochloric Acetic acids) perform pre-treatment. The study follows life cycle thinking perspective, accounting for all stages grinding, pre-treatment, enzymatic hydrolysis, fermentation, filtration ethanol distillation, on “gate-to-gate” approach. inventory was developed using mainly primary data laboratorial experiments, complemented whenever necessary with information literature Ecoinvent V3.0 database available SimaPro 8.0.2 software. For impact assessment, ILCD Midpoint 2011 methodology used. Results show that general, sulfuric hydrochloric have better performance than acetic nitric acids. Also, results followed by hydrolysis are process steps highest relative contribution impacts. Thus, an improvement analysis should focus these steps, example fossil energy implementing renewable sources.