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Previous issue date: 2014-03-31 / High consumption of fossil fuels, relentless pursuit for economic development has
generated excessive increase of anthropogenic emissions of greenhouse gases
(GHGs), particularly of carbon dioxide (CO2). Carbon capture and geological storage
is an alternative to mitigate CO2 emissions at industrial scale. This work aims to study
the influence of salinity aqueous phase using CO2 in supercritical state on change of
physical, chemical, and mineralogical parameters of sandstone reservoir rock,
representative of the Furnas Formation in Paran? (PR) State, Brazil, in conditions of
geological storage. Experiments were performed about 15 days in stainless steel
batch reactors AISI 304 subjected to pressure and constant temperature (120 bar
and 75 oC), similar to those found in geological formations. In parallel, PHREEQCv3.0
code was used to simulate the geological interactions Rock-CO2-Saline solution
equilibrium. Characterization of solid was performed with Microscopy in Binocular
Loupe, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy
Dispersive Spectroscopy (EDS) and, the aqueous phase was by ICP-OES, for
analysis of cations and Ion Chomatography (IC) for analysis of anions. Those
techniques converged to the same results where quartz, kaolinite and illite were
found as primary mineral in abundance of mineralogical composition of the Furnas
rock. Globally, the Furnas sample is not so reactive in the presence of CO2, milli-Q
water and saline solution in geological storage conditions. However, partial
dissolution of illite and reprecipitation of kaolinite and silica were identified at the lab
scale. These results were confirmed by numerical simulations. / Consumo desenfreado de combust?veis f?sseis, busca incessante pelo
desenvolvimento econ?mico tem gerado excessivo aumento das emiss?es
antr?picas de gases de efeito estufa (GEE), principalmente de di?xido de carbono
(CO2). A captura e o armazenamento geol?gico de carbono ? uma alternativa para
mitigar as emiss?es de CO2 na escala industrial. Esse trabalho visa estudar a
influ?ncia da salinidade da fase aquosa utilizando CO2 em estado supercr?tico na
altera??o dos par?metros f?sicos, qu?micos, e mineral?gicos da rocha de arenito de
reservat?rio, representativa da Forma??o Furnas no Estado do Paran? (PR), Brasil,
em condi??es de armazenamento geol?gico. Realizou-se os experimentos durante
15 dias em reatores em batelada de a?o inoxid?vel AISI 304 submetidos ? press?o e
temperatura constantes (120 bar e 75 oC), id?nticas ?s encontradas nas forma??es
geol?gicas. Em paralelo, o c?digo PHREEQC-v3.0 foi utilizado para simular as
intera??es geoqu?micas Rocha-CO2-Solu??o salina ao equil?brio. Uma
caracteriza??o do s?lido foi realizada por Microscopia em Lupa Binocular, Difra??o
de Raios-X (DRX), Microscopia Eletr?nica de Varredura (MEV) com espectroscopia
de energia dispersiva (EDS) e, da fase aquosa foi por ICP-OES, para an?lise de
c?tions, e cromatografia i?nica, para an?lise de ?nions. Estas t?cnicas convergiram
para os mesmos resultados, onde quartzo, caulinita e ilita foram encontrados como
minerais prim?rios em abund?ncia na composi??o mineral?gica da rocha Furnas.
Em geral, a rocha Furnas mostrou-se pouco reativa em presen?a de CO2, ?gua Milli-
Q ou solu??o salina para fins de armazenamento geol?gico. Por?m, se identificou a
dissolu??o parcial de ilita e a (re)precipita??o de s?lica e caulinita, em escala
laboratorial. Esses resultados foram confirmados pela modelagem num?rica.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/3261 |
| Date | 31 March 2014 |
| Creators | Pires Neto, Diker Lima |
| Contributors | Iglesias, Rodrigo Sebastian |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Engenharia e Tecnologia de Materiais, PUCRS, BR, Faculdade de Engenharia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -7432719344215120122, 500, 600, -655770572761439785 |
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