Geopolimeri na bazi pepela kao adsorbenti za uklanjanje lantanida iz modelnih otopina

master's thesis

• Title (english): Ash-based geopolymers as adsorbents of lanthanides from model solutions
• Author: Ana Galović
• Mentor: Gordana Medunić (mentor)
• Committee member: Gordana Medunić (predsjednik povjerenstva)
• Committee member: Zorica Petrinec (član povjerenstva)
• Committee member: Alan Moro (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Geology); Zagreb
• Defense date and country: 2019-02-18, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

Geopolimeri su anorganski materijali koji uz prisutnost alkalijskih aktivatora i pri niskim temperaturama polimeriziraju i očvrsnu. Svoju primjenu uglavnom nalaze u graditeljstvu, ali sve se više istražuje njihova uloga u zaštiti okoliša. Brojne studije ukazale su na mogućnost primjene geopolimera za stabilizaciju određenih metala iz otpadnih voda, ali ne postoje istraživanja koja bi dala nove spoznaje o mehanizmima i procesima kojima se zagađivala vežu za površinu geopolimera ili ulaze u njegovu strukturu i onemugućuju daljnji kontakt s okolišem. Kao sirovina pri pripremi geopolimera može poslužiti bilo koji materijal s visokim sadržajem silicija i aluminija, bez obzira na njegovo podrijetlo. U ovom radu istražit će se sposobnost adsorpcije lantanida na geopolimere pripremljene na bazi pepela iz Raškog ugljena.

Abstract (english)

Geopolymers are inorganic materials which, in the presence of alkali activators and at low temperatures, polymerize and harden. Their application is mostly found in construction, but their role in environmental protection is increasingly explored. Numerous studies have shown the possibility of using geopolymer for the stabilization of certain metals from wastewaters, but there are no research that would give new insight into the mechanisms and processes that bind polluntants to the surface of the geopolymer or enter into its structure and do not support further contact with the environment. Any material with a high content of silicon and aluminum can be used as a raw material when preparing the geopolymer, regardless of its origin. In this paper we will investigate the ability of adsorption of lanthanide to ash-based carbohydrate geopolymers.

• Keywords: geopolimer; lantanidi; pepeo; alkalijska aktivacija
• Keywords (english): geopolymer; lanthanide; ash; alkaline activation
• Language: croatian
• URN:NBN: urn:nbn:hr:217:394024
• Study programme: Title: Graduate university study of Environmental Geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-02-25 09:15:47