. "Nesplnil zad\u00E1n\u00ED, smlouva v\u0161ak byla dodr\u017Eena."@cs . "2010-12-31+01:00"^^ . . . . " bimetallic catalyst" . "2015-02-09+01:00"^^ . . " reductive dehalogenation" . "GA104/09/0880" . "polybrominated diphenyl ethers" . "2010-04-16+02:00"^^ . . . "Polybromovan\u00E9 difenyl \u00E9tery (PBDE) jsou pou\u017E\u00EDvan\u00E9 jako zpomalova\u010De ho\u0159en\u00ED zejm\u00E9na v plastech. Jsou to l\u00E1tky glob\u00E1ln\u011B roz\u0161\u00ED\u0159en\u00E9, ale vysoce toxick\u00E9. P\u0159irozen\u00FDmi degrada\u010Dn\u00EDmi procesy jejich nosi\u010D\u016F se uvol\u0148uj\u00ED do \u017Eivotn\u00EDho prost\u0159ed\u00ED, kde se vyskytuj\u00ED v odpadn\u00EDch vod\u00E1ch a v \u010Dist\u00EDrensk\u00FDch kalech. Jejich koncentrace v \u017Eivotn\u00EDm prost\u0159ed\u00ED v posledn\u00EDch letech prudce stoup\u00E1. P\u0159es potravinov\u00FD \u0159et\u011Bzec se dost\u00E1vaj\u00ED a\u017E k \u017Eiv\u00FDm organizm\u016Fm, kde se kumuluj\u00ED v\u00A0jejich tk\u00E1n\u00EDch, s potenci\u00E1ln\u011B z\u00E1va\u017En\u00FDmi zdravotn\u00EDmi d\u016Fsledky. Nen\u00ED disponibiln\u00ED \u017E\u00E1dn\u00E1 nerizikov\u00E1 metoda jejich zne\u0161kod\u0148ov\u00E1n\u00ED (mo\u017En\u00FD zp\u016Fsob destrukce molekul PBDE oxidac\u00ED a za pou\u017Eit\u00ED UV z\u00E1\u0159en\u00ED, vede ke tvorb\u011B vysoce toxick\u00FDch polybromovan\u00FDch dibenzodioxin\u016F a furan\u016F). Vhodnou metodou sn\u00ED\u017Een\u00ED zdravotn\u00ED rizikovosti t\u011Bchto l\u00E1tek m\u016F\u017Ee b\u00FDt jejich reduktivn\u00ED debromace. C\u00EDlem tohoto pojektu je ve vs\u00E1dkov\u00FDch a kontinu\u00E1ln\u00EDch laboratorn\u00EDch reaktorech zjistit rozkladn\u00E9 cesty reduktivn\u00ED debromace PBDE ve vodn\u00E9m prost\u0159ed\u00ED za pou\u017Eit\u00ED paladizovan\u00E9ho \u017Eeleza (resp.Mg) ve form\u011B makro- a nano-\u010D\u00E1stic a/nebo v heterogenn\u00ED sm\u011Bsi Fe \u010D\u00E1stic s Pd na inertn\u00EDm nosi\u010Di a identifikovat mo\u017En\u00E9 meziprodukty v\u010Detn\u011B jejich ekotoxicity. V\u00FDsledky p\u0159inesou origin\u00E1ln\u00ED v\u011Bdn\u00ED pozn\u00E1n\u00ED a podklady pro n\u00E1vrh degrada\u010Dn\u00EDch reaktor\u016F v\u011Bt\u0161\u00EDch m\u011B\u0159\u00EDtek." . . "Chemical degradation of polybrominated difenyl ethers."@en . . . "2009-01-01+01:00"^^ . "Chemick\u00E1 degradace polybromovan\u00FDch difenyl \u00E9ter\u016F." . "4"^^ . "4"^^ . "1"^^ . "http://www.isvav.cz/projectDetail.do?rowId=GA104/09/0880"^^ . "1"^^ . " palladium" . "polybrominated diphenyl ethers; reductive dehalogenation; bimetallic catalyst; iron; palladium; wast"@en . "Failed to fulfill assignment agreement, however, was observed."@en . "0"^^ . "The decision of the Bureau."@en . "Polybrominated diphenyl ethers (PBDE) which are applied as fire retardants in everyday consumer products are a new class of toxic cotaminants. It is known that PBDE are found in waste waters and that PBDEs will also end up in the sludge The general population is targeted by the PBDEs via food chain. At present there are no widely accepted environmentally friendly and safety method for the remediation of water and/or aqueous sludges conataminated with PBDEs and their degradation kinetics is rather limited. Reductive degradation of PBDE can be considered as fundamental and safety method for solving the problem at real conditions. The project is focused on the experimental determination of the reaction pathways of reductive debromination of individual congeners of PBDE in the batch and continuous laboratory reactors. New types of bimetallic Pd /Fe (Mg) catalysts in the form of macro-, micro, and nano-particles will be synthetized and employed as reduction agents. The efficiency and possibilities of long-term application of selected types of catalysts will be evaluated, individual reaction products as well as their eco-toxicity will be determined and the scaling-up of siutable reactors with packed and fluidized bed of the catalyst will be proposed."@en . " iron" . . . "Z rozhodnut\u00ED p\u0159edsednictva."@cs . . . . . . . .