PMID- 31279123 OWN - NLM STAT- MEDLINE DCOM- 20191115 LR - 20191115 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 235 DP - 2019 Nov TI - The impact of low to high waste cooking oil-based biodiesel blends on toxic organic pollutant emissions from heavy-duty diesel engines. PG - 726-733 LID - S0045-6535(19)31474-2 [pii] LID - 10.1016/j.chemosphere.2019.06.233 [doi] AB - As yet, the effect of biodiesels on the emissions of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from heavy-duty diesel engines (HDDEs) has only been studied using limited fuel blend ratios. To clarify the influence of using higher fractions of biodiesel on the emissions of toxic organic pollutants from diesel engines, in this research, the emissions of PM, PAHs, and persistent organic pollutants (POPs) from EURO IV and EURO III HDDEs fueled by low to high waste cooking oil (WCO)-based biodiesel-petrodiesel fuel blends were studied, including D100 (0% biodiesel), B20 (20%), B40 (40%), B60 (60%), B80 (80%), and B100 (100%). The engines were tested according to the US FTP-75 test procedure. The results for the EURO IV diesel engine showed that the PM and toxic organic pollutant emissions were reduced with increases in the blending ratio up until the B60 scenario when compared to the D100 scenario. This is because biodiesel has higher oxygen content and no or lower aromatic content than petrodiesel. Nevertheless, during the B80 and B100 scenarios, the PM and toxic organic pollutant emissions increased due to the high viscosity property of biodiesel, which negatively affected the combustion process. The biodiesel effect on the emissions from EURO III engine was more pronounced because of its lower combustion efficiency, and therefore the improvement in combustion using biodiesel resulted in greater PCDD/F reductions. CI - Copyright (c) 2019. Published by Elsevier Ltd. FAU - Cheruiyot, Nicholas Kiprotich AU - Cheruiyot NK AD - Department of Environmental Engineering, National Cheng Kung University, 1 University Road, Tainan, 70101, Taiwan. FAU - Hou, Wen-Che AU - Hou WC AD - Department of Environmental Engineering, National Cheng Kung University, 1 University Road, Tainan, 70101, Taiwan. Electronic address: whou@mail.ncku.edu.tw. FAU - Wang, Lin-Chi AU - Wang LC AD - Department of Civil Engineering and Geomatics, Cheng Shiu University, 840 Cheng-Ching Road, Kaohsiung City, 83347, Taiwan; Center for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, 840 Cheng-Ching Road, Kaohsiung City, 83347, Taiwan; Super Micro Mass Research and Technology Center, Cheng Shiu University, 840 Cheng-Ching Road, Kaohsiung City, 83347, Taiwan. Electronic address: lcwang@csu.edu.tw. FAU - Chen, Chia-Yang AU - Chen CY AD - Department of Environmental Engineering, National Cheng Kung University, 1 University Road, Tainan, 70101, Taiwan. LA - eng PT - Journal Article DEP - 20190701 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Air Pollutants) RN - 0 (Biofuels) RN - 0 (Dibenzofurans) RN - 0 (Environmental Pollutants) RN - 0 (Gasoline) RN - 0 (Polychlorinated Dibenzodioxins) RN - 0 (Polycyclic Aromatic Hydrocarbons) RN - 0 (Vehicle Emissions) SB - IM MH - Air Pollutants/*analysis MH - Biofuels/*analysis MH - Cooking MH - Dibenzofurans MH - Environmental Pollutants MH - Gasoline/analysis MH - Polychlorinated Dibenzodioxins/analysis MH - Polycyclic Aromatic Hydrocarbons/analysis MH - Vehicle Emissions/*analysis OTO - NOTNLM OT - Heavy-duty diesel engines OT - PAHs OT - PM OT - POPs OT - WCO-Based biodiesel EDAT- 2019/07/07 06:00 MHDA- 2019/11/16 06:00 CRDT- 2019/07/07 06:00 PHST- 2018/12/29 00:00 [received] PHST- 2019/06/11 00:00 [revised] PHST- 2019/06/30 00:00 [accepted] PHST- 2019/07/07 06:00 [pubmed] PHST- 2019/11/16 06:00 [medline] PHST- 2019/07/07 06:00 [entrez] AID - S0045-6535(19)31474-2 [pii] AID - 10.1016/j.chemosphere.2019.06.233 [doi] PST - ppublish SO - Chemosphere. 2019 Nov;235:726-733. doi: 10.1016/j.chemosphere.2019.06.233. Epub 2019 Jul 1.