Improvements in dioxin abatement strategies at a municipal waste management plant in Barcelona

Abad, Esteban; Caixach, Josep; Rivera, J.

doi:10.1016/s0045-6535(02)00483-6

Cited by 57 publications

(38 citation statements)

References 20 publications

(18 reference statements)

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“…Furthermore, the duration fly ash remained in the bag filter was longer than that for other incinerator units, thereby increasing the amount of PCDD/Fs downstream. Similar trends were observed by Giugliano et al (2002), Abad et al (2003) and Wevers and De Fr´e (1998). The PAC injection system was located between the semidry scrubber and bag filter.…”

Section: Pcdd/fs Mass Balance In the Bag Filtersupporting

confidence: 83%

“…However, the PCDD/F concentrations in flue gas were markedly decreased with PAC injection. The PAC injection was followed by various types of APCDs to enhance removal of PCDD/Fs, which approached 92-99% (Tejima et al, 1996;Dong et al, 2001a;Dong et al, 2001b;Abad et al, 2003). However, PAC injection only helps adsorb PCDD/Fs when it does not decompose PCDD/Fs.…”

Section: Experimental Approachmentioning

confidence: 99%

“…A dry scrubber combined with a bag filter with powder activated carbon (PAC) injected is the most effective technique for controlling PCDD/F emissions (Blumbach and Nethe, 1994;Buekens and Huang, 1998;Lee et al, 2004;Wang et al, 2005). Notably, PAC injection is followed by various types of APCDs to enhance the removal of PCDD/Fs, which can approach 92-99% for MSWIs (Tejima et al, 1996;Dong et al, 2001a;Dong et al, 2001b;Abad et al, 2003). After dioxins have been adsorbed onto the PAC, the PAC with fly ash is then captured by the bag filter and removed as fly ash.…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of PCDD/Fs in a Particles Filtration Device with Activated Carbon Injection

Wang

Lin

Chang-Chien

2009

Aerosol Air Qual. Res.

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Although numerous investigations have monitored polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran (PCDD/F) emissions from large municipal solid waste incinerators (MSWIs) and undertaken laboratory experiments to identify the formation mechanisms of PCDD/F, the PCDD/F profiles inside an air-pollution control device have seldom been determined. This study presents the outcome of a dioxin abatement program that injected particulate activated carbon (PAC) into an MSWI. The fly ashes collected from different locations in a bag filter were examined and the mass distribution was determined. Emissions from the stack were sampled to analyze PCDD/F content after injections of 10, 13 and 17 kg/h PAC. The concentration of PCDD congeners decreased from 117.00 to 0.32 ng/Nm 3 and that of PCDF decreased from 94.84 to 0.19 ng/Nm 3 . The concentrations of filter cake ashes in different chambers and at different locations varied at 105.11-147.53 ng/g. Based on mass balance evaluation, the flow rate of PCDD/Fs in filter cake ash was 3.33 ± 0.50 ng/min; this value was roughly six times higher than that of fly ash in the disposal pit, indicating that filter cake ash treatment warrants considerable attention due to the policy for controlling PCDD/Fs.

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Section: Pcdd/fs Mass Balance In the Bag Filtersupporting

confidence: 83%

Section: Experimental Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characteristics of PCDD/Fs in a Particles Filtration Device with Activated Carbon Injection

Wang

Lin

Chang-Chien

2009

Aerosol Air Qual. Res.

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“…In fact, some nineties studies refer that MSWI seem to be the most important source of PCDD/PCDF to air emissions (Olie et al, 1998). However, the emissions of MSWI of units that comply with the limit established in Directive 2000/76/EC are no longer so important (Abad et al, 2003;Lee et al, 2007). Indeed, measurements for MSWI plants, equipped with up-to-date APC systems showed that average concentration is around 0.048 ng I-TEQ/Nm 3 , and the monitored values are all in the range 0.01-0.08 ng I-TEQ/Nm 3 (Abad et al, 2006).…”

Section: Dioxinsmentioning

confidence: 99%

“…Other contamination sources were, nevertheless, pointed out since pollutants emission levels diminished more significantly than health problems after the installation of new cleaning gas systems. Also, the replacement of old systems (electrostatic precipitator) by new technologies (semi-dry scrubber, fabric filters and charcoal injection) in Spain (Abad et al, 2003) revealed a significant decrease on dioxins emissions spread in stack gas, bottom ash and air pollution control residues, where the higher dioxin content was found. Heavy metal deposition around a MSWI area in USA showed quite different pollution concentrations during fall and winter (Feng et al, 2000).…”

Section: The Impact On Health Of Emissions To Air From Mswimentioning

confidence: 99%