title: Life cycle assessment of bioethanol production from woodchips with modifications in the pretreatment process.
abstract: Pretreatment as a crucial step in the process of ethanol production has significant influences on the process efficiency and on the environmental performance of the bioethanol production from lignocellulosic biomass. In present life cycle analysis (LCA) study, two cases for pretreatment of woodchips were considered as the focal point of the ethanol plant. One was assumed as base scenario whereas the second is the proposed alternative by implementation of modifications on the base design. In the first stage, LCA results of pretreatment unit showed lower environmental impacts in respiratory inorganics and land use than in new scenario, while the base scenario revealed better performance in fossil fuels. The results of the second stage of LCA study demonstrated improvement in proposed design in most categories of environmental impacts such as 18.5 % in land use as well as 17 % improvement in ecosystem quality.
authors.affiliation: Department of Process Engineering, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL, A1B 3X5, Canada.
authors.forename: Jalil
authors.initials: J
authors.lastname: Shadbahr
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Faisal
authors.initials: F
authors.lastname: Khan
mesh_terms: D056804:Biofuels; D018533:Biomass; D002482:Cellulose / Q000737:chemistry; D000431:Ethanol / Q000737:chemistry*; D010944:Plants / Q000737:chemistry; D014934:Wood / Q000737:chemistry*
chemical_list: D056804:Biofuels; D000431:Ethanol; D002482:Cellulose