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undergraduate thesis
Utjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu
završni rad
Split: University of Split, Faculty of Chemistry and Technology, 2023. urn:nbn:hr:167:728329
Plazibat, Tanja
University of Split
Faculty of Chemistry and Technology
Division of Engineering and Chemistry

Institutional repository: Repository of the Faculty of chemistry and technology

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Plazibat, T. (2023). Utjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu : završni rad (Undergraduate thesis). Split: University of Split, Faculty of Chemistry and Technology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:167:728329

Plazibat, Tanja. "Utjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:167:728329

Plazibat, Tanja. "Utjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu : završni rad." Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, 2023. https://urn.nsk.hr/urn:nbn:hr:167:728329

Plazibat, T. (2023). 'Utjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu : završni rad', Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, accessed 25 December 2024, https://urn.nsk.hr/urn:nbn:hr:167:728329

Plazibat T. Utjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu : završni rad [Undergraduate thesis]. Split: University of Split, Faculty of Chemistry and Technology; 2023 [cited 2024 December 25] Available at: https://urn.nsk.hr/urn:nbn:hr:167:728329

T. Plazibat, "Utjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu : završni rad", Undergraduate thesis, University of Split, Faculty of Chemistry and Technology, Split, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:167:728329

Metadata
TitleUtjecaj dodatka otopine Humistar na vezanje iona cinka i olova iz vodenih otopina na prirodnom zeolitu : završni rad
Title (english)EFFECT OD ADDITION OF THE HUMISTAR SOLUTION ON ZINC AND LEAD UPTAKE FROM THE AQUEOUS SOLUTION ONTO NATURAL ZEOLITE : bachelor thesis
AuthorTanja Plazibat
MentorMarina Trgo (mentor)
Committee memberIvona Nuić (predsjednik povjerenstva)
Committee memberMario Nikola Mužek (član povjerenstva)
Committee memberMarina Trgo (član povjerenstva)
GranterUniversity of Split
Faculty of Chemistry and Technology
(Division of Engineering and Chemistry)
Split
Defense date and country2023-09-26, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Chemical Engineering
Abstract
Ispitano je vezanje iona olova i cinka iz vodenih otopina dviju različitih početnih koncentracija na prirodnom zeolitu u prisustvu organske tvari. Za simulaciju organske tvari je poslužila otopina Humistar ® preparata koji sadrži huminske i fulvinske kiseline. Komercijalno se proizvodi i primjenjuje kao dodatak tlu s ciljem boljeg rasta i prinosa biljaka. Izvedeni su eksperimenti vezanja metalnih iona uz različite dodatke 10%-tne otopine Humistara ® pri konstantnim eksperimentalnim uvjetima. Nakon uravnoteženja sa zeolitom i razgradnje organske tvari, u tekućoj fazi određene su koncentracije olova i cinka AAS tehnikom. Dobiveni rezultati pokazuju da je količina vezanog olova kao i stupanj uklanjanja značajno veći u odnosu na cink što je u skladu s dosadašnjim istraživanjima. Međutim dodatak organske tvari utječe na smanjenje količine vezanja i stupnja uklanjanja kod olova i cinka te je to smanjenje jače izraženo s povećanjem dodatka organske tvari. Može se pretpostaviti da dolazi do inhibicije vezanja metalnih iona na zeolit koja je posljedica više mehanizama prijenosa metalnih iona. Prva je pretpostavka da se metalni ioni vezuju, tj. sorbiraju na molekule huminskih i fulvinskih kiselina, čime se onemogućava ionska izmjena i oni zaostaju u filtratu nakon uravnoteženja sa zeolitom. Druga je pretpostavka da se molekule organske faze sorbiraju na površini zeolita, blokirajući aktivna mjesta dostupna za ionsku izmjenu.
Abstract (english)
The binding of lead and zinc ions from aqueous solutions of two different initial concentrations onto natural zeolite in the presence of organic matter has been examined. The Humistar ® solution, which contains humic and fulvic acids, was used to simulate organic matter. It is commercially produced and applied as a soil additive with the aim of better plant growth and yield. Experiments of metal ions removal have been performed with different additions of 10% Humistar ® solution under constant experimental conditions. After equilibration with zeolite and decomposition of the organic matter, lead and zinc ions concentrations have been determined in the liquid phase using the AAS technique. The obtained results show that the amount of bound lead as well as removal efficiency is significantly higher compared to zinc, which is in accordance with previous research. However, the addition of organic matter reduces the amount of binding of lead and zinc as well as removal efficiency, and this reduction is more pronounced with the increase of the addition of organic matter. It can be assumed that there is an inhibition of the binding of metal ions onto zeolite, which is a consequence of several mechanisms of metal ions mass transfer. The first assumption is that metal ions are bound, i.e. sorbed to molecules of humic and fulvic acids, which disables their ion exchange onto zeolite and they remain in the filtrate after equilibration with zeolite. Another assumption is that the molecules of the organic phase are sorbed on the zeolite surface, blocking the active sites available for ion exchange.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:167:728329
Study programmeTitle: Food technology - undergraduate - university
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni prvostupnik (baccalaureus) inženjer prehrambene tehnologije (sveučilišni prvostupnik (baccalaureus) inženjer prehrambene tehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2023-12-01 07:43:17