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| 標題: | Impact of high soot-loaded and regenerated diesel particulate filters on the emissions of persistent organic pollutants from a diesel engine fueled with waste cooking oil-based biodiesel |
| 作者: | Chen, Chia-Yang
Lee, Wen-Jhy
Wang, Lin-Chi
Chang, Yu-Cheng
Yang, Hsi-Hsien
Young, Li-Hao
Lu, Jau-Huai
Tsai, Ying I.
Cheng, Man-Ting
Mwangi, John Kennedy |
| 貢獻者: | Natl Cheng Kung Univ, Dept Environm Engn
Cheng Shiu Univ, Dept Civil Engn & Geomat
Chaoyang Univ Technol, Dept Environm Engn & Management
China Med Univ, Dept Occupat Safety & Hlth
Natl Chung Hsing Univ, Dept Mech Engn
Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
Natl Chung Hsing Univ, Dept Environm Engn |
| 關鍵字: | Diesel engine
Diesel Particle Filter
Persistent organic pollutants
Waste cooking oil |
| 日期: | 2017-04-01 |
| 上傳時間: | 2018-11-30 15:49:32 (UTC+8) |
| 出版者: | Elsevier Sci Ltd |
| 摘要: | This study evaluated the impact on persistent organic pollutant (POP) emissions from a diesel engine when deploying a diesel oxidation catalyst (DOC) combined with an uncatalyzed diesel particulate filter (DPF), as well as fueling with conventional diesel (B2) and waste cooking oil-based (WCO-based) biodiesel blends (B10 and B20). When the engine was fueled with WCO-based biodiesel blends (B10 and B20) in combination with deploying DOC+A-DPF, their levels of the chlorine arid potassium contents could not stimulate the formation of chlorinated POPs (PCDD/Fs and PCBs), although previous studies had warned that happened on diesel engines fueled with biodiesel and deployed With iron-catalyzed DPFs. In contrast, the WCO-based biodiesel with a lower aromatic content reduced the precursors for POP formation, and its higher oxygen content compared to diesel promoted more complete combustion, and thus using WCO-based biodiesel could reduce both PM2.5 and POP emissions froth diesel engines. This study also evaluated the impact of DPF conditions on the POP emissions from a diesel engine; that is, the difference in POP emissions before and just after the regeneration of the DPF. In comparison to the high soot-loaded DPF scenario, the regeneration of the DPF can drastically reduce the formation potential of POPs in the DPFs. An approach was developed to correct the effects of sampling artifacts on the partitioning of gas- and particle-phase POPs in the exhaust. The gas-phase POPs are highly dominant (89.7-100%) in the raw exhausts of diesel engines, indicating that the formation mechanism of POPs in diesel engines is mainly through homogeneous gas-phase formation, rather than de novo synthesis. (C) 2017 Elsevier Ltd. All rights reserved. |
| 關聯: | Applied Energy, v.191, pp.35-43 |
| 顯示於類別: | [環境資源管理系(所)] 期刊論文
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