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Geosequestration of Carbon Dioxide in Deep Saline Aquifers: Hydro-Chemical Considerations

thesis
posted on 16.08.2017 by GARDIYA PUNCHIHEWAGE DILANTH DE SILVA
Geosequestration of carbon dioxide is a promising technology to mitigate undesirable CO2 levels in the atmosphere, which is the major cause of global warming. The main aim of this research is to investigate the effect of long-term CO2-rock-fluid interactions on aquifer rocks. Assessing long-term CO2 injectivity and structural integrity of the aquifer and the caprock are key criteria to implement in large scale. Main research findings show that time-dependent degradation of rock minerals cause significant strength reductions through destabilising rock microstructure. Moreover, continuous dissolution and precipitation reactions lead to altering aquifer rock’s pore sizes and the clay content by adversely affecting on flow properties.

History

Campus location

Australia

Principal supervisor

Ranjith Pathegama Gamage

Additional supervisor 1

Mandadige Samintha Anne Perera

Additional supervisor 2

Asadul Haque

Year of Award

2017

Department, School or Centre

Civil Engineering

Course

Doctor of Philosophy

Degree Type

Doctorate

Faculty

Faculty of Engineering

Exports

Exports