. "Studium procesu membr\u00E1nov\u00E9 mikrofiltrace kombinovan\u00E9 s iontovou v\u00FDm\u011Bnou na p\u0159\u00EDrodn\u00EDch zeolitech"@cs . . "Slovak Society of Chemical Engineering" . . "042/1-042/10" . . "Z(MSM 253100001)" . . "Jir\u00E1nkov\u00E1, Hana" . "3"^^ . . "3"^^ . "[161B57C6FAF1]" . "80-227-2052-6" . "10"^^ . . . "Dole\u010Dek, Petr" . . "Cakl, Ji\u0159\u00ED" . . "RIV/00216275:25310/04:00001428" . "Studium procesu membr\u00E1nov\u00E9 mikrofiltrace kombinovan\u00E9 s iontovou v\u00FDm\u011Bnou na p\u0159\u00EDrodn\u00EDch zeolitech"@cs . . "RIV/00216275:25310/04:00001428!RIV08-MSM-25310___" . "588747" . "Bratislava, Slovensko" . "The Study of a Process Combining Cross-flow Micro-filtration and Ion-exchange on Natural Zeolite"@en . . "Proceedings of 31st International Conference of Slovak Society of Chemical Engineering" . . . "This contribution deals with the study of process combining both cross-flow microfiltration and ionic exchange on zeolite added to the feed stream. In this work, natural zeolite ? clinoptilolite- was characterised as an ion-exchanger and its ability to adsorb NH4+ ions was tested. The batch experiments for sorptive capacity determination were performed for several initial concentrations of the NH4Cl. Both the concentrations of NH4+ ions in the feed and in the filtrate were determined by spectrophotometry measurements. All experiments were performed under isothermal conditions and then the sorption isotherm was estimated. The next experiments dealt with sorption measurements at cross-flow microfiltration of NH4Cl solution with zeolite addition. It was found out, that clinoptilolite addition to the feed stream of microfiltration unit does not reduce the permeate flux significantly, the convenient operating conditions were pressure difference below 90 kPa and retentate velocity cca 2 m/s. The sorption"@en . "The Study of a Process Combining Cross-flow Micro-filtration and Ion-exchange on Natural Zeolite"@en . "P\u0159\u00EDsp\u011Bvek se zab\u00FDv\u00E1 procesem kombinuj\u00EDc\u00EDm cross-flow mikrofiltraci a iontovou v\u00FDm\u011Bnu na zeolitech d\u00E1vkovan\u00FDch p\u0159\u00EDmo do n\u00E1st\u0159ikov\u00E9ho proudu mikrofiltra\u010Dn\u00EDho za\u0159\u00EDzen\u00ED. Jako iontom\u011Bni\u010D byl v tomto p\u0159\u00EDpad\u011B pou\u017Eit p\u0159\u00EDrodn\u00ED zeolit-klinoptilolit a v r\u00E1mci experiment\u016F byla testov\u00E1na jeho schopnost adsorbovat NH4+ ionty. Pro stanoven\u00ED sorp\u010Dn\u00ED kapacity klinoptilolitu byla uskute\u010Dn\u011Bna \u0159ada vs\u00E1dkov\u00FDch experiment\u016F. Stanoven\u00ED koncentrace amonn\u00FDch iont\u016F bylo provedeno spektrofotometricky a z v\u00FDsledk\u016F m\u011B\u0159en\u00ED pak byly sestrojeny adsorp\u010Dn\u00ED izotermy. Dal\u0161\u00ED \u010D\u00E1st experiment\u016F byla zam\u011B\u0159ena na stanoven\u00ED sorp\u010Dn\u00ED kapacity p\u0159i mikrofiltraci roztok\u016F amonn\u00FDch sol\u00ED s p\u0159\u00EDdavky zeolitu. Bylo zji\u0161t\u011Bno, \u017Ee p\u0159\u00EDdavky zeolitu p\u0159i mikrofiltraci nesni\u017Euj\u00ED v\u00FDznamn\u011B intenzitu toku perme\u00E1tu, navr\u017Een\u00E9 parametry syst\u00E9mu byly tlak. rozd\u00EDl 90 kPa a rychlost retent\u00E1tu 2 m/s. P\u0159esto\u017Ee b\u011Bhem experiment\u016F nebylo dosa\u017Eeno maxim\u00E1ln\u00ED sorp\u010Dn\u00ED kapacity, poda\u0159ilo se p\u0159i filtraci se zeolity v\u00FDznamn\u011B sn\u00ED\u017Eit koncentraci amonn\u00FDch iont\u016F."@cs . . "25310" . "The Study of a Process Combining Cross-flow Micro-filtration and Ion-exchange on Natural Zeolite" . "microfiltration; natural zeolites; ion-exchange"@en . "This contribution deals with the study of process combining both cross-flow microfiltration and ionic exchange on zeolite added to the feed stream. In this work, natural zeolite ? clinoptilolite- was characterised as an ion-exchanger and its ability to adsorb NH4+ ions was tested. The batch experiments for sorptive capacity determination were performed for several initial concentrations of the NH4Cl. Both the concentrations of NH4+ ions in the feed and in the filtrate were determined by spectrophotometry measurements. All experiments were performed under isothermal conditions and then the sorption isotherm was estimated. The next experiments dealt with sorption measurements at cross-flow microfiltration of NH4Cl solution with zeolite addition. It was found out, that clinoptilolite addition to the feed stream of microfiltration unit does not reduce the permeate flux significantly, the convenient operating conditions were pressure difference below 90 kPa and retentate velocity cca 2 m/s. The sorption" . . "The Study of a Process Combining Cross-flow Micro-filtration and Ion-exchange on Natural Zeolite" . .