About: Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions.

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About: Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions. Goto Sponge NotDistinct Permalink

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Description	V modelovém systému směsi popílku ze spaloven odpadu, CuCl2. 2 H2O, NaCl a aktivního uhlí byl v prostředí N2 + 10%O2 studován vliv oxidu siřičitého, peroxidu vodíku a kyseliny sírové na vznik polychlorovaných dioxinů (PCDD), dibenzofuranů (PCDF) a bifenylů (PCB) de novosyntetickými reakcemi v laboratorních podmínkách. Tvorba PCDD byla potlačována oxidem siřičitým mnohem výrazněji v porovnání s tvorbou PCDF. Obdobný efekt byl zjištěn pro peroxid vodíku. Vznik PCDF byl výrazně potlačen v přítomnosti kyseliny sírové. Na základě experimentálních dat a termodynamických výpočtů byly navrženy a diskutovány následující reakční mechanismy : oxidativní destrukce kyslíkových vazeb PCDD a PCDF, konverze chloridu a pravděpodobně i oxidu měďnatého na nereaktivní síran měďnatý a Deaconovy oxychlorační procesy katalyzované chloridem měďnatým. (cs) Under laboratory conditions in the model system of municipal waste fly ash, CuCl2 .2H2O, NaCl and activated carbon in N2 + 10 % O2 atmosphere the de novosynthetic reactions of formation of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) in the presence of sulfur dioxide, hydrogen peroxide, and sulfuric acid were studied. It was stated that sulfur dioxide is lowering more efficiently the formation of PCDD as compared with PCDF. Similar behaviour was found in the presence of hydrogen peroxide. The formation of PCDF was strongly limited in the presence of sulfuric acid. From the results and thermodynamic calculations of the studied systems the following proposed mechanisms are discussed. Under laboratory conditions in the model system of municipal waste fly ash, CuCl2 .2H2O, NaCl and activated carbon in N2 + 10 % O2 atmosphere the de novosynthetic reactions of formation of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) in the presence of sulfur dioxide, hydrogen peroxide, and sulfuric acid were studied. It was stated that sulfur dioxide is lowering more efficiently the formation of PCDD as compared with PCDF. Similar behaviour was found in the presence of hydrogen peroxide. The formation of PCDF was strongly limited in the presence of sulfuric acid. From the results and thermodynamic calculations of the studied systems the following proposed mechanisms are discussed. (en)
Title	Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions. Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions. (en) Vliv oxidu siřičitého, peroxidu vodíku a kyseliny sírové na de novosyntetické reakce vzniku PCDD/F a PCB v atmosféře N2 + 10 % O2 v modelovém laboratorním uspořádání. (cs)
skos:prefLabel	Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions. Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions. (en) Vliv oxidu siřičitého, peroxidu vodíku a kyseliny sírové na de novosyntetické reakce vzniku PCDD/F a PCB v atmosféře N2 + 10 % O2 v modelovém laboratorním uspořádání. (cs)
skos:notation	RIV/67985858:_____/07:00096153!RIV08-AV0-67985858
http://linked.open.../vavai/riv/strany	1947;1954
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA104/04/0829), S, Z(AV0Z40720504), Z(MSM6046137307)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Punčochář, Miroslav Pekárek, Vladimír Fišerová, Eva
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	419118
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/07:00096153
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sulphur dioxide; de novo synthesis; mechanism (en)
http://linked.open.../riv/klicoveSlovo	sulphur dioxide de novo synthesis mechanism
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[3AF5F22816B6]
http://linked.open...i/riv/nazevZdroje	Chemosphere
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Gasification of biomass in fluidized bed - a source of renewable energy
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	66
http://linked.open...iv/tvurceVysledku	Punčochář, Miroslav Bureš, M. Pekárek, Vladimír Fišerová, Eva Grabic, R.
http://linked.open...n/vavai/riv/zamer	Investigation of multiphase reacting systems for the design of processes important in synthesis and preparation of novel materials, in energy production and in environmental protection Physico-chemical methods of analysis and characterization of chemical systems and biosystems
issn	0045-6535
number of pages	8 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions. Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions. Effect of Sulfur Dioxide, Hydrogen Peroxide and Sulfuric Acid on the De novo Synthesis of PCDD/F and PCB in the N2 + 10 % O2 Atmosphere under Model Laboratory Conditions.

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