prikaz prve stranice dokumenta Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition
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master's thesis
Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition
master's thesis
Zagreb: University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, 2017. urn:nbn:hr:169:131462
Tomljenović, Iva
University of Zagreb
Faculty of Mining, Geology and Petroleum Engineering

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Tomljenović, I. (2017). Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition : master's thesis (Master's thesis). Zagreb: University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:169:131462

Tomljenović, Iva. "Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition : master's thesis." Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:169:131462

Tomljenović, Iva. "Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition : master's thesis." Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, 2017. https://urn.nsk.hr/urn:nbn:hr:169:131462

Tomljenović, I. (2017). 'Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition : master's thesis', Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, accessed 19 April 2024, https://urn.nsk.hr/urn:nbn:hr:169:131462

Tomljenović I. Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition : master's thesis [Master's thesis]. Zagreb: University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering; 2017 [cited 2024 April 19] Available at: https://urn.nsk.hr/urn:nbn:hr:169:131462

I. Tomljenović, "Geochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition : master's thesis", Master's thesis, University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Zagreb, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:169:131462

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Metadata
TitleGeochemical modelling of CO2 dissolution in deep saline aquifers - the effects on brine composition : master's thesis
Title (croatian)Geokemijsko modeliranje otapanja CO2 u dubokim slanim vodonosnicima – utjecaj na kemijski sastav slojne vode : diplomski rad
AuthorIva Tomljenović
MentorBruno Saftić (mentor)
Committee memberBruno Saftić (predsjednik povjerenstva)
Committee memberVesnica Garašić (član povjerenstva)
Committee memberIva Kolenković Močilac (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Mining, Geology and Petroleum Engineering
Zagreb
Defense date and country2017-07-21, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Geology
Mineralogy and Petrology
Abstract
Geological storage of carbon dioxide in deep saline aquifers is one of the methods of reducing its concentration in the atmosphere. Deep saline aquifers are geological formations located at depths that range from 800 to 2500 metres. In Croatia, a research has recently been conducted based on capacity estimations. Therein created geological maps of specific storage capacities in the Western part of Sava depression are confined to the Poljana sandstones that were singled out as a potential storage unit. Since the porosity had been measured in only 20 wells, in this study, this parameter was extrapolated to 60 wells, using NCSS statistical software. After that, due to the only available data of the water composition from the observed area, well Žu-249 has been selected for further geochemical modelling of CO2(g) dissolution in brines. The modelling has been performed with the PHREEQC program implementing chemical equilibrium between formation water and dissolved CO2(g). The same model has been created for deep saline aquifer in Ketzin, Germany. The Ketzin models have been made with the available data from water analysis prior the injection, in 2008, and in 2014, six years after the injection had started. Finally, all the models were compared to obtain a general picture of the CO2 storage efficiency and safetey due to mineralogically different formations, different depths, temperatures, pressures and salinities as the key parameters. The most important findings are that it is relatively safe to store CO2(g) in this type of aquifers. CO2(g) changes pH of water and under the new circumstances certain minerals precipitate and CO2(g) is slowly being removed from the brine.
Abstract (croatian)
Geološko skladištenje ugljičnog dioksida u duboke slane vodonosnike jedna je od metoda smanjenja njegove koncentracije u atmosferi. Duboki slani vodonosnici su geološke formacije smještene na dubinama od 800 do 2500 m. U Hrvatskoj je istraživanje u fazi procjene kapaciteta, te su u prethodnim istraživanjima napravljene karte specifičnog kapaciteta uskladištenja za zapadni dio Savske depresije. Poljana pješčenjaci su izdvojeni kao potencijalna formacija za skladištenje. Budući da su u toj fazi poroznosti bile procijenjene u samo 20 bušotina, u ovome je radu pomoću statističkog programa NCSS, poroznost interpolirana na 60 bušotina. Potom je, zbog dostupnih podataka kemijske analize, odabrana bušotina Žu-249 za daljnje geokemijsko modeliranje otapanja ugljičnog dioksida u slojnoj vodi. Modeliranje je napravljeno u programu PHREEQC, metodom kemijske ravnoteže između slojne vode i otopljenog CO2(g). Ista stvar je napravljena za duboki slani vodonosnik u Ketzin-u, Njemačka. Za model Ketzin korišteni su podatci o sastavu slojne vode koja je analizirana prije utiskivanja, 2008. godine, i 2014. godine, šest godina nakon početka utiskivanja. Na kraju su svi modeli uspoređeni kako bi se dobila opća slika o sigurnosti uskladištenja CO2(g) u duboke slane vodonosnike s obzirom na mineraloški različite formacije, različite dubine zalijeganja, temperature, tlakove i salinitete vode kao ključne parametere. Zaključeno je da je relativno sigurno skladištiti CO2(g) u duboke slane vodonosnike. CO2(g) mijenja pH vode, te u takvom promijenjenom sistemu, novi minerali precipitiraju i CO2(g) se polako odstranjuje iz vodonosnika.
Keywords
Keywords (croatian)
Languageenglish
URN:NBNurn:nbn:hr:169:131462
Study programmeTitle: Geology; specializations in: Geology of mineral resources and geophysical explorations
Course: Geology of mineral resources and geophysical explorations
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
RepositoryFaculty of Mining, Geology and Petroleum Engineering Repository, University of Zagreb
Created on2017-09-07 13:11:41

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