. "P\u0159\u00EDprava kompozitn\u00EDch sorbent\u016F pro odstra\u0148ov\u00E1n\u00ED ne\u017E\u00E1douc\u00EDch l\u00E1tek z vodn\u00FDch roztok\u016F"@cs . "6"^^ . "[5513149710BF]" . . . . . . "S, Z(MSM6046137304)" . "Parschov\u00E1, Helena" . "Vysok\u00E1 \u0161kola chemicko-technologick\u00E1 v Praze" . . . . "2"^^ . "Composite sorbents, that are containing hydrated iron oxide, are used for the sorption of undesirable substances from water. Most often, it is arsenic and heavy metals. The aim of this work was to prepare the composite sorbents based on hydrated ferric oxide, determine their composition and other characteristics, such as distribution of particles and mechanical and chemical stability. The aim was also to determine the sorption efficiency of the prepared sorbents for adsorption of arsenic, beryllium and uranium and also determine the regeneration efficiency of sorbents. Prepared sorbents XAD4-A33 and XAD16-A33 contained iron oxides in the form of magnetite, goethite and maghemite. Sorbents showed good chemical stability (at pH 5 - 9), but not so good mechanical stability. It was found that the prepared sorbents can be successfully used to remove arsenic, beryllium and uranium from aqueous solutions. But removal of beryllium and uranium was less efficient than removal of arsenic. Sorbents can be regenerated quite well, regeneration efficiency varied between 80 - 90 %. Only in the case of the sorption of uranium regeneration efficiency was lower, around 50 %."@en . "Praha" . "2"^^ . "Praha" . "beryllium; uranium; arsenic; iron oxides; Composite sorbent"@en . . "Preparation of composite sorbents for removing undesirable substances"@en . "978-80-7080-835-1" . . . "P\u0159\u00EDprava kompozitn\u00EDch sorbent\u016F pro odstra\u0148ov\u00E1n\u00ED ne\u017E\u00E1douc\u00EDch l\u00E1tek z vodn\u00FDch roztok\u016F" . . "RIV/60461373:22320/12:43894141!RIV13-MSM-22320___" . "2012-09-05+02:00"^^ . "Chemie energetick\u00FDch ob\u011Bh\u016F 9" . "Kompozitn\u00ED sorbenty obsahuj\u00EDc\u00ED hydratovan\u00FD oxid \u017Eelezit\u00FD se pou\u017E\u00EDvaj\u00ED pro sorpci ne\u017E\u00E1douc\u00EDch l\u00E1tek z vody. Nej\u010Dast\u011Bji se jedn\u00E1 o arsen a t\u011B\u017Ek\u00E9 kovy. C\u00EDlem pr\u00E1ce bylo p\u0159ipravit kompozitn\u00ED sorbenty na b\u00E1zi hydratovan\u00E9ho oxidu \u017Eelezit\u00E9ho, stanovit jejich slo\u017Een\u00ED a dal\u0161\u00ED vlastnosti, jako je distribuce \u010D\u00E1stic a mechanick\u00E1 \u010Di chemick\u00E1 stabilita. C\u00EDlem bylo tak\u00E9 stanovit sorp\u010Dn\u00ED \u00FA\u010Dinnost p\u0159ipraven\u00FDch sorbent\u016F p\u0159i sorpci arsenu, beryllia a uranu a jejich \u00FA\u010Dinnost regenerace. P\u0159ipraven\u00E9 sorbenty XAD4-A33 a XAD16-A33 obsahovaly oxidy \u017Eeleza ve form\u011B magnetitu, goethitu a maghemitu. Sorbenty vykazovaly dobrou chemickou stabilitu (p\u0159i pH 5 - 9), ale ne p\u0159\u00EDli\u0161 dobrou mechanickou stabilitu. Bylo zji\u0161t\u011Bno, \u017Ee p\u0159ipraven\u00E9 sorbenty mohou b\u00FDt pou\u017Eity pro pro odstran\u011Bn\u00ED arsenu, beryllia a uranu z vodn\u00FDch roztok\u016F. Odstra\u0148ov\u00E1n\u00ED uranu a beryllia prob\u00EDhalo s ni\u017E\u0161\u00ED \u00FA\u010Dinnost\u00ED ne\u017E v p\u0159\u00EDpad\u011B arsenu. Sorbenty byly regenerov\u00E1ny s pom\u011Brn\u011B dobrou \u00FA\u010Dinnost\u00ED (80 - 90 %). Pouze v p\u0159\u00EDpad\u011B regenerace po sorpci uranu byla \u00FA\u010Dinnost ni\u017E\u0161\u00ED, kolem 50 %."@cs . . "161824" . . . "Porschov\u00E1, Hana" . "P\u0159\u00EDprava kompozitn\u00EDch sorbent\u016F pro odstra\u0148ov\u00E1n\u00ED ne\u017E\u00E1douc\u00EDch l\u00E1tek z vodn\u00FDch roztok\u016F"@cs . . "Kompozitn\u00ED sorbenty obsahuj\u00EDc\u00ED hydratovan\u00FD oxid \u017Eelezit\u00FD se pou\u017E\u00EDvaj\u00ED pro sorpci ne\u017E\u00E1douc\u00EDch l\u00E1tek z vody. Nej\u010Dast\u011Bji se jedn\u00E1 o arsen a t\u011B\u017Ek\u00E9 kovy. C\u00EDlem pr\u00E1ce bylo p\u0159ipravit kompozitn\u00ED sorbenty na b\u00E1zi hydratovan\u00E9ho oxidu \u017Eelezit\u00E9ho, stanovit jejich slo\u017Een\u00ED a dal\u0161\u00ED vlastnosti, jako je distribuce \u010D\u00E1stic a mechanick\u00E1 \u010Di chemick\u00E1 stabilita. C\u00EDlem bylo tak\u00E9 stanovit sorp\u010Dn\u00ED \u00FA\u010Dinnost p\u0159ipraven\u00FDch sorbent\u016F p\u0159i sorpci arsenu, beryllia a uranu a jejich \u00FA\u010Dinnost regenerace. P\u0159ipraven\u00E9 sorbenty XAD4-A33 a XAD16-A33 obsahovaly oxidy \u017Eeleza ve form\u011B magnetitu, goethitu a maghemitu. Sorbenty vykazovaly dobrou chemickou stabilitu (p\u0159i pH 5 - 9), ale ne p\u0159\u00EDli\u0161 dobrou mechanickou stabilitu. Bylo zji\u0161t\u011Bno, \u017Ee p\u0159ipraven\u00E9 sorbenty mohou b\u00FDt pou\u017Eity pro pro odstran\u011Bn\u00ED arsenu, beryllia a uranu z vodn\u00FDch roztok\u016F. Odstra\u0148ov\u00E1n\u00ED uranu a beryllia prob\u00EDhalo s ni\u017E\u0161\u00ED \u00FA\u010Dinnost\u00ED ne\u017E v p\u0159\u00EDpad\u011B arsenu. Sorbenty byly regenerov\u00E1ny s pom\u011Brn\u011B dobrou \u00FA\u010Dinnost\u00ED (80 - 90 %). Pouze v p\u0159\u00EDpad\u011B regenerace po sorpci uranu byla \u00FA\u010Dinnost ni\u017E\u0161\u00ED, kolem 50 %." . "Preparation of composite sorbents for removing undesirable substances"@en . "22320" . . "P\u0159\u00EDprava kompozitn\u00EDch sorbent\u016F pro odstra\u0148ov\u00E1n\u00ED ne\u017E\u00E1douc\u00EDch l\u00E1tek z vodn\u00FDch roztok\u016F" . . "RIV/60461373:22320/12:43894141" . . .