Reducing Emissions of Persistent Organic Pollutants from a Diesel Engine by Fueling with Water-Containing Butanol Diesel Blends

doi:10.1021/es405278w

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/28665

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/28665

Title:	Reducing Emissions of Persistent Organic Pollutants from a Diesel Engine by Fueling with Water-Containing Butanol Diesel Blends
Authors:	Chang, Yu-Cheng Lee, Wen-Jhy Yang, Hsi-Hsien Wang, Lin-Chi Lu, Jau-Huai Tsai, Ying I. Cheng, Man-Ting Young, Li-Hao Chiang, Chia-Jui
Contributors:	環境資源管理系
Keywords:	POLYCYCLIC AROMATIC-HYDROCARBONS DIBENZO-P-DIOXINS POLYCHLORINATED DIPHENYL ETHERS TOXIC EQUIVALENCY FACTORS ATMOSPHERIC ENVIRONMENTS PARTICULATE MATTER EXHAUST EMISSIONS BIODIESEL COMBUSTION ETHANOL
Date:	2014-05
Issue Date:	2015-05-06 21:24:23 (UTC+8)
Publisher:	Amer Chemical Soc
Abstract:	The manufacture of water-containing butanol diesel blends requires no excess dehydration and surfactant addition. Therefore, compared with the manufacture of conventional bio-alcohols, the energy consumption for the manufacture of water-containing butanol diesel blends is reduced, and the costs are lowered. In this study, we verified that using water-containing butanol diesel blends not only solves the tradeoff problem between nitrogen oxides (NOx) and particulate matter emissions from diesel engines, but it also reduces the emissions of persistent organic pollutants (POPs), including polycyclic aromatic hydrocarbons, polychlorinated dibenzo-p-dioxins and dibenzofurans, polychlorinated biphenyls, polychlorinated diphenyl ethers, polybrominated dibenzo-p-dioxins and dibenzofurans, polybrominated biphenyls and polybrominated diphenyl ethers. After using blends of B2 with 10% and 20% water-containing butanol, the POP emission factors were decreased by amounts in the range of 22.6%-42.3% and 38.0%-65.5% on a mass basis, as well as 18.7%-78.1% and 51.0%-84.9% on a toxicity basis. The addition of water-containing butanol introduced a lower content of aromatic compounds and most importantly, lead to more complete combustion, thus resulting in a great reduction in the POP emissions. Not only did the self-provided oxygen of butanol promote complete oxidation but also the water content in butanol diesel blends could cause a microexplosion mechanism, which provided a better turbulence and well-mixed environment for complete combustion.
Relation:	Environmental Science & Technology, v.48 n.10, pp.6010-6018
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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