Chemistry 2210A/B Study Guide - Final Guide: Dimethyl Ether, Octane Rating, List Of Gasoline Additives

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Carbon neutral: the amount of co2 that they emit upon combustion is matched by that absorbed during the photosynthesis by the next crop. Renewable, in the sense that their production could be sustained indefinitely into the future even if the fossil fuel supplies run out. Have oxygen content giving less pollutants which results in less air pollutants being produced and potentially released into the air. It also clears land of its existing biomass in order to generate new areas to cultivate for biofuel production, or new areas to grow crops. Air pollution from etoh combustion: oxygenated fuels result in lower emissions of many pollutants; co, alkenes, aromatics and particulates. Should result in reduction in tropospheric ozone, but acetaldehyde is also produced which counters the benefit. Bioethanol from cellulose: emerging technology for bioethanol production uses of cellulose and hemicellulose components from plants rather than starch.