PCDD/DF concentrations at the inlets and outlets of wet scrubbers in Korean waste incinerators. - Abstract - Europe PMC
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Ki-In Choi
Dong-Hoon Lee
Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
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[21 Jun ):370-376]
Journal Article
To further understand the effects of wet scrubbers on PCDD/DF levels, it was measured the concentrations of PCDD/DF, dust, and other gaseous pollutants at both the inlets and the outlets of seven wet scrubbers. As a result, the concentrations of PCDD/DF at the inlets and outlets of the wet scrubbers ranged from 0.2 to 37.4, and 0.8 to 6.0 ng TEQ N m-3, respectively. With the exceptions of wet scrubbers F and G, the PCDD/DF levels decreased by and large in most wet scrubbers. It was thought that their relatively high removal efficiencies were more increased with heavier loads of dust and particle-bound PCDD/DF. On the other hand, it was also surveyed the increase of gaseous PCDD/DF in wet scrubber, where the total level of PCDD/DF was decreased. However, it was not sure whether it had been resulted from the thermal adsorption/desorption phenomenon between packing materials and emission gases or not. At the very least, however, although there still remains an unexplained aspect for the increase of gaseous PCDD/DF, it is clear that wet scrubbers can be sufficiently applied to remove PCDD/DF to a certain extent, if only removal efficiencies for the particle loads are high, and if a significant part of the PCDD/DF at the inlets is particle associated.
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CitePeer Related ArticlesTitle:&Linee guida per la prevenzione della contaminazione da PCDD, PCDF, e sostanze diossina-simili in azienda agricola
MeSH:&A&Analisi dei carichi di lavoro
Issue Date:&2006
Publisher:&Istituto Superiore di Sanità
Citation:&Brambilla G, De Filippis SP, di Domenico A. Linee guida per la prevenzione della contaminazione da PCDD, PCDF, e sostanze diossina-simili in azienda agricola. Roma: Istituto Superiore di Sanità; 2006. ( Rapporti ISTISAN 06/05). 
ispartof:&Rapporti ISTISAN
Language:&it
Type:&Technical Report
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1.01 MBAdobe PDFPHOTOCHEMICAL SYSTEM AND METHOD FOR THE REMOVAL OF PCDD OR PCDF COMPOUNDS FROM INDUSTRIAL... - Patent - Europe PMC
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PHOTOCHEMICAL SYSTEM AND METHOD FOR THE REMOVAL OF PCDD OR PCDF COMPOUNDS FROM INDUSTRIAL PROCESS EMISSIONS
(PAT - WO)
RICHARDS JOHN
RICHARDS DANIEL
HOLDER TOMMY
BROZELL TODD
GOSHAW DAVID
Patent: 
Publ.of the Int.Appl. with Int.search report - World Intellectual Property Organization
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A photochemical process for removing or minimizing the concentration of PCDD or PCDF compounds within an industrial gas stream. The process includes the direct photolysis of PCDD or PCDF compounds. Light within a particular spectral range is irradiated (28) into the gas stream and is absorbed by the PCDD and PCDF compounds in the presence of a hydrogen donor and this results in producing a lower chlorinated PCDD or PCDF compound form. In addition, the gas stream may be treated (22) by removing particular matter therefrom and thereafter subjected to the above-described irradiation (28). Further, as another optional step, the gas stream may be irradiated (14) with the specific purpose of targeting PCDD and PCDF precursor compounds.; In this case, the irradiation is absorbed by the precursor compounds causing them to be chemically modified to different compounds that do not participate in chemical reactions that result in the formation of PCDD and PCDF compounds.
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