Gas-Particle Partitioning of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls in Flue Gases from Municipal Solid Waste Incinerators

Han, Ying; Liu, Wenbin; Li, Haifeng; Lei, Rongrong; Gao, Lian; Su, Guoshao; Liu, Guorui

doi:10.4209/aaqr.2017.09.0308

Cited by 14 publications

(3 citation statements)

References 46 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the viewpoint of the contribution to the total I-TEQ values (as shown in Fig. 6(b)), the greatest contributor was 2,3,4,7,8-PeCDF (36.72-38.66%), which was a similar finding to that of other researchers (Han et al, 2017;Hsieh et al, 2018;Lin et al, 2018;Zhan et al, 2018).…”

Section: Profiles Of the Homologs And Congeners Of Pcdd/fs In The Fly Ash Collected From The Baghousesupporting

confidence: 87%

Effects of Sulfur and Calcium Compounds on Dioxin Reduction in a Fluidized Bed Combustor

Shen

Wang

Chyang

et al. 2019

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

The focus of this study is the effects of sulfur and calcium compounds on reducing dioxins in fly ash collected from the baghouse of a pilot-scale fluidized bed combustor. Pelletized sawdust with various amounts of polyvinyl chloride (PVC), pyrite, and calcium hydroxide was used as the feeding material. The experimental results indicated an extremely low concentration of dioxin in the fly ash from the cyclone (0.025 to 0.284 ng g -1 ), and the concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in the fly ash collected from the baghouse increased by 27.4% as the chlorine content increased from 0.568 to 1.136 wt%. The inhibition of PCDD/Fs by sulfur is not clear and can be attributed to the low content of copper (average 387 ppm), which serves as the catalyst for the Deacon reaction. Octa-chlorinated dibenzofuran (OCDF) was the major congener of the PCDD/Fs. The highest toxicity-equivalent (I-TEQ) of 2,3,7,8substituted congeners was 2,3,4,7,8-PeCDF, which accounted for 37% of the total congeners (average value). The correlation between the I-TEQ values and 2,3,4,7,8-PeCDF concentration of fly ash is also discussed.

show abstract

Section: Profiles Of the Homologs And Congeners Of Pcdd/fs In The Fly Ash Collected From The Baghousesupporting

confidence: 87%

Effects of Sulfur and Calcium Compounds on Dioxin Reduction in a Fluidized Bed Combustor

Shen

Wang

Chyang

et al. 2019

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

show abstract

“…Typical organic pollutants, such as polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs), chlorobenzenes (CBzs) and chlorophenols, can be found throughout the whole process of municipal solid waste incinerator (MSWI) with various concentration levels. Researchers have found that there are various persistent organic pollutants in the bottom ash, fly ash and the flue gases before and after the air pollution control devices (APCDs) (Dong et al, 2002;Takaoka, 2002;Oh et al, 2007;Yan et al, 2010;Hu et al, 2013;Han et al, 2017;Hsieh et al, 2018). The characteristics and relationships of PCDD/Fs and chlorobenzenes as indicators have also been studied (Ballschmiter et al, 1988;Altwicker et al, 1992;Kato and Urano, 2001;Lavric et al, 2005;Yin et al, 2007;Gullett et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Removal of PCDD/Fs and CBzs by Different Air Pollution Control Devices in MSWIs

Chen

Sun

Wang

et al. 2020

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

This study investigated the removal efficiencies of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) and chlorobenzenes (CBzs) by different air pollution control devices (APCDs) in three municipal solid waste incinerators (MSWIs). These devices were the semi-dry flue gas desulfurization (SDFGD) system, activated carbon (AC) injector, bag filters (BF), selective catalytic reduction (SCR) reactor, and wet scrubber. The SDFGD system, AC injector, and BF exhibited similar removal efficiencies for all of the pollutants. Overall, the removal efficiency of CBzs was also considerably lower than the PCDD/Fs. The less chlorinated CBzs were also less likely to be adsorbed by AC and BF and more likely to be decomposed by the SCR reactor. Additionally, the "memory effect" in the wet scrubbers elevated the concentrations of the PCDD/Fs and even the CBzs in the flue gas, with the highest increases observed for penta-to heptachlorinated PCDD/Fs and TrCBzs. Given the different effects of these various devices, especially the wet scrubber, the correlation between PCDD/F and CBz removal should be individually assessed for each APCD unit. More accurate indicators of PCDD/F removal are also examined.

show abstract

“…PCDD/F contamination usually binds to organic and/or inorganic particles with a diameter of <10 µm. For lower diameter of organic/inorganic particles (<2.5 µm), the ratio of number of PCDD/F molecules bound to particles decreases by nearly 35 percent [24].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Air Pollution with Polychlorinated Dibenzodioxins (PCDDs) and Polychlorinated Dibenzofuranes (PCDFs) in Lithuania

et al. 2020

View full text Add to dashboard Cite

Polychlorinated dibenzodioxins and polychlorinated dibenzofurans (PCDD/F) are highly bioavailable in humans, either through direct inhalation or indirectly by trophic transfer from contaminated food or water. The main sources of pollution with PCDD/F include industrial and non-industrial combustion sources, like domestic contaminated wood burning, house fires, burning of leaves from trees, etc. When looking for alternative energy sources and reduced energy costs, solid waste incineration plants are intended to be built in the vicinity of urbanized areas, and thus, the need emerges for examination and prediction of to what extent the solid waste incineration plants might affect the surrounding ecosystem, air pollution, and human health. Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) (or simply PCDD/F congeners) belong to the group of semi-volatile organic compounds with environmental stability and long-range transfer in the ambient air. Dioxin isomers are highly toxic and may have carcinogenic and mutagenic effects in humans. PCDD/F is detected in air, water, sediment, plants and animals. PCDD/F is generally distributed in the particulate phase in ambient air. For solid waste incineration plant emissions, the distribution of PCDD/F particles into particles with a diameter of <10 μm is more than 81% of the total particulate matter, and more than 54% of the PCDD/F is distributed into particles with a diameter of <2.5 μm. The aim of this study is to investigate the sources of PCDD/F, emissions and potential hazards, i.e., a toxic equivalent in Lithuania. The measurements were performed in two largest cities of Lithuania Vilnius and Kaunas, where the level of PCDD/F discovered was from 0.015 to 0.52 pg/m3 and from 0.02 to 0.05 pg/m3, respectively. The sites for the monitoring were selected based on their proximity to the locations of the planned cogeneration power plants in these cities.

show abstract

Gas-Particle Partitioning of Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls in Flue Gases from Municipal Solid Waste Incinerators

Cited by 14 publications

References 46 publications

Effects of Sulfur and Calcium Compounds on Dioxin Reduction in a Fluidized Bed Combustor

Effects of Sulfur and Calcium Compounds on Dioxin Reduction in a Fluidized Bed Combustor

Removal of PCDD/Fs and CBzs by Different Air Pollution Control Devices in MSWIs

Assessment of Air Pollution with Polychlorinated Dibenzodioxins (PCDDs) and Polychlorinated Dibenzofuranes (PCDFs) in Lithuania

Contact Info

Product

Resources

About