Emission characteristics of PCDD/Fs in diesel engine with variable load rate

Kim, Kyungseop; Hong, Kil-Hwan; Ko, Young-Hwan; Yoon, Kyoon-Duk; Kim, Man-Goo

doi:10.1016/s0045-6535(03)00540-x

Cited by 23 publications

(22 citation statements)

References 7 publications

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“…3), which accounted for 42.7% of the combined 2,3,7,8-substituted PCDD/F I-TEQ concentrations. This is consistent with several tunnel studies (e.g., Chang et al, 2004;Kim et al, 2003).…”

Section: Homolog and Congener Profilessupporting

confidence: 93%

The winter effect on formation of PCDD/Fs in Guangzhou by vehicles: A tunnel study

Deng

Peng

Ren

et al. 2011

Atmospheric Environment

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“…3), which accounted for 42.7% of the combined 2,3,7,8-substituted PCDD/F I-TEQ concentrations. This is consistent with several tunnel studies (e.g., Chang et al, 2004;Kim et al, 2003).…”

Section: Homolog and Congener Profilessupporting

confidence: 93%

The winter effect on formation of PCDD/Fs in Guangzhou by vehicles: A tunnel study

Deng

Peng

Ren

et al. 2011

Atmospheric Environment

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“…This was similar to results from diesel engines from other studies (Ryan and Gullett, 2000;Kim et al, 2003). The congeners that had the highest percentage increase were 2, 3,7,2,3,4,7,1,2,3,4,7,2,3,6,7,.…”

Section: Pcdd/f Concentrations Congener Profiles and Emission Factorssupporting

confidence: 89%

Effects of Selective Catalytic Reduction on the Emissions of Persistent Organic Pollutants from a Heavy-Duty Diesel Engine

Cheruiyot

Wang

Lin

et al. 2017

Aerosol Air Qual. Res.

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The emissions of persistent organic pollutants (POPs) from diesel engines is becoming more important due to their proximity to human beings compared to stationary sources whose emission have been well controlled over the years. The selective catalytic reduction (SCR) have been adopted in the heavy-duty diesel engine (HDDE) to reduce the nitrogen oxide (NO x ). SCR has also been reported to reduce the polycyclic aromatic hydrocarbons (PAHs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), and polychlorinated biphenyls (PCBs). However, the memory effect and reformation of persistent organic pollutants (POPs) during SCR operation are not well understood. This study investigated the effect of Copper-zeolite SCR (CuZ SCR) on PCDD/F, PCB, polybrominated dibenzo-p-dioxin and dibenzofuran (PBDD/F), and polybrominated biphenyl (PBB) emissions from a HDDE at 50% and 75% engine load. Notably, PCDD/F and PCB toxicity emissions increased by 78.4% and 201%, respectively. The dominant PCDD/F congeners were OCDD, OCDF, 1,2,3,4,6,7,8-HpCDD, and 1,2,3,4,6,7,8-HpCDF and PCB-105, PCB-118 and PCB-77 for PCBs. More PCDFs were formed compared to PCDDs and lower chlorinated congeners increased more than the higher chlorinated ones. There was also an increase of PBDD/F concentrations from undetectable levels (ND) to 0.247 pg TEQ Nm -3 (4.00 pg TEQ L -1 ) after the SCR. However, only 1,2,3,4,6,7,8-HpBDF and OBDF contributed to the concentrations. PBBs was the only compound measured that reduced after the SCR. The only congener detected before and after the SCR was PBB 15. Consequently, the CuZ SCR could be a source of POPs under mid and high engine loads in this study. Further detail research is required to focus on the formation of POPs on the catalyst surfaces and structures.

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“…In all runs, the concentration of PCDDs in exhaust gases exceeds that of PCDFs. Table S3, we see that several authors [17,19,24,27] In all runs, the PCDD contribution to I-TEQ is greater than that of the PCDFs. Figure 2 The TEQ-weighted congener distribution of the diesel passenger car is shown in Figure 3 Moreover, RK2 belongs to Euro 4 whereas RK1 belongs to Euro 3.…”

Section: Methodsmentioning

confidence: 83%

“…Neuer-Etscheidt et al [39] proposed that the combustion conditions during heat-up combined with residual deposits were sufficient to promote the formation of halogenated products of incomplete [6,19,33,35]. Table 3 Figure 4 shows the TEQ-weighted PCDD/F profiles obtained for the emissions from the power generator.…”

Section: Methodsmentioning

confidence: 99%

“…No reference works dealing with on-road samplings in passenger vehicles have been found. Table S3 of the supporting information summarizes some published data concerning the main congeners (without toxicity factors), the congeners that contribute to the total toxicity I-TEQ (taking into account the toxicity factors), and the percentage x 100 of Page 5 of 32 A c c e p t e d M a n u s c r i p t 5 PCDFs/(PCDFs+PCDDs) without and with TEF factors [2,3,6,8,[15][16][17][18][19]21,22,24,26,27,[29][30][31][32][33].…”

mentioning

confidence: 99%

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PCDD/F emissions from light-duty diesel vehicles operated under highway conditions and a diesel-engine based power generator

Rey

Font

Aracil

2014

Journal of Hazardous Materials

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Emission characteristics of PCDD/Fs in diesel engine with variable load rate

Cited by 23 publications

References 7 publications

The winter effect on formation of PCDD/Fs in Guangzhou by vehicles: A tunnel study

The winter effect on formation of PCDD/Fs in Guangzhou by vehicles: A tunnel study

Effects of Selective Catalytic Reduction on the Emissions of Persistent Organic Pollutants from a Heavy-Duty Diesel Engine

PCDD/F emissions from light-duty diesel vehicles operated under highway conditions and a diesel-engine based power generator

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