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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/31594

    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
    Appears in Collections:[環境資源管理系(所)] 期刊論文

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