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Title:Možnosti uporabe zeolitov za fiksiranje kovinskih ionov v sedimentih : diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje
Authors:ID Grm, Sara (Author)
ID Simonič, Marjana (Mentor) More about this mentor... New window
ID Horvat, Andrej (Mentor) More about this mentor... New window
Files:.pdf VS_Grm_Sara_2023.pdf (2,59 MB)
MD5: D3F34BF1C2CF6058A78381BA641E1404
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Namen diplomske naloge je bila študija možnosti uporabe zeolitov za fiksiranje Cr(VI), Zn(II) in Pb(II) ionov v kontaminiranih sedimentih. Za fiksacijo navedenih kovinskih ionov smo uporabili mešanico sintetičnih zeolitov 13X in 4A, v razmerju 1:1. Sedimente za študijo fiksacije Cr(VI) ionov smo vzorčili v bližini Zreč, za Zn(II) in Pb(II) ione pa smo sedimenti vzorčili iz reke Drave. V določeno maso sedimentov smo v razmerju 100:1 in 10:1 dodali zeolite. Vzorčenim sedimentom smo pred začetkom izvajanja meritev tudi določili vlažnost s postopkom žarjenja in smo se odločili, da bomo v njih tudi opazovali fiksacijo Cr(VI) ionov. Tako pripravljene vzorce smo hranili v temnem prostoru, da smo se čim bolj približali pogojem, v katerih se sediment nahaja v naravi. Preučevali smo uspešnost fiksacije pri različnih temperaturah in pH vrednostih. Vsebnost kovinskih ionov smo merili v času 3 mesecev. Celotno vsebnost kovinskih ionov v vzorčenih sedimentih smo določili z EDTA. Po zaključenem eksperimentu smo ugotovili, da je zeolit učinkovito sredstvo za fiksiranje Cr(VI), Zn(II) in Pb(II) ionov v sedimentih. Fiksacija Cr(VI) ionov je bila najboljša pri vzorcu hranjenem pri sobni temperaturi in nevtralnem pH z uporabo razmerja 10:1 dodanih zeolitov. Fiksacija Zn(II) ionov je bila najboljša pri sedimentih hranjenih pri 4 °C pri bazičnem pH, z uporabo razmerja 100:1 dodanih zeolitov. Fiksacija Pb(II) ionov je pri vseh preučevanih vzorcih bila enaka, saj smo vsem vzorcem izmerili vsebnost Pb(II) ionov pod mejno vrednostjo.
Keywords:zeolit, fiksacija, težke kovine, sediment
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[S. Grm]
Year of publishing:2023
Number of pages:1 spletni vir (1 datoteka PDF ( XI, 31 f.))
PID:20.500.12556/DKUM-84928 New window
UDC:549.67:666.123.4(043.2)
COBISS.SI-ID:166988291 New window
Publication date in DKUM:11.09.2023
Views:368
Downloads:72
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
:
GRM, Sara, 2023, Možnosti uporabe zeolitov za fiksiranje kovinskih ionov v sedimentih : diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje [online]. Bachelor’s thesis. Maribor : S. Grm. [Accessed 26 March 2025]. Retrieved from: https://dk.um.si/IzpisGradiva.php?lang=eng&id=84928
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Licences

License:CC BY-ND 4.0, Creative Commons Attribution-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nd/4.0/
Description:Under the NoDerivatives Creative Commons license one can take a work released under this license and re-distribute it, but it cannot be shared with others in adapted form, and credit must be provided to the author.
Licensing start date:09.08.2023

Secondary language

Language:English
Title:Study of the possible zeolite application for fixation of metal ions in sediments
Abstract:The aim of this thesis was to study the possibility of using zeolites for the fixation of Cr(VI), Zn(II) and Pb(II) ions in contaminated sediments. A mixture of synthetic zeolites 13X and 4A, in a 1:1 ratio, was used for the fixation of these metal ions. Sediments for the Cr(VI) ion fixation study were sampled in the vicinity of Zreče, while for Zn(II) and Pb(II) ions sediments were sampled from the Drava river. Zeolites were added to the sediments in the ratio 100:1 and 10:1. The sampled sediments were also subjected to a moisture determination by an annealing process before the measurements were carried out and we also decided to observe the fixation of Cr(VI) ions in them. The samples prepared in this way were kept in a dark room to resemble as closely as possible the conditions in which the sediment is found in nature. The fixation efficiency was studied at different temperatures and pH values. The metal ion content was measured over a period of 3 months. The total metal ion content of the sampled sediments was determined by EDTA. After the experiment was concluded, it was found that zeolite is an effective agent for fixation of Cr(VI), Zn(II) and Pb(II) ions in sediments. The fixation of Cr(VI) ions was best in samples, stored at room temperature and neutral pH using a 10:1 ratio of added zeolites. The fixation of Zn(II) ions was best in sediments stored at 4 °C at basic pH, using a 100:1 ratio of added zeolites. The fixation of Pb(II) ions was the same for all the treated samples, as all the samples were measured to contain Pb(II) ions below the limit value.
Keywords:zeolite, fixation, heavy metals, sediment


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