Document Detail


Influence of Methane in CO2 Transport and Storage for CCS Technology.
MedLine Citation:
PMID:  23150938     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
CO2 Capture and Storage (CCS) is regarded as a good strategy to mitigate the ever increasing levels of greenhouse gases in the atmosphere. The presence and type of impurities clearly influence the properties and behavior of the anthropogenic CO2, and consequently the design and operation of CCS technology facilities. Its study is also necessary to elaborate the gas quality specifications for CO2 transport and storage, and also in order to develop theoretical models for specific engineering applications to CCS technology. In our current work we determine the influence of CH4, an important impurity in anthropogenic CO2, within different steps of CCS technology: transport, injection and geological storage. For this purpose, we obtain new and reliable PT and VLE experimental data of six CO2+CH4 mixtures at compositions which represent emissions from the main sources in EU and USA. The P and T ranges studied are within the estimated for CO2 pipelines and geological storage sites. From these data we evaluate the minimal pressures for transport, regarding the density and pipeline's capacity requirements, and values for the solubility parameter of the mixtures, a factor which governs the solubility of substances present in reservoir prior to injection. We also conclude that the presence of CH4 reduces the storage capacity, increases the buoyancy of the CO2 plume, which in turn diminishes the efficiency of solubility and residual trapping of CO2, and reduces the injectivity into geological formations.
Authors:
Sofía Teresa Blanco; Clara Rivas; Javier Fernández; Manuela Artal; Inmaculada Velasco
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-14
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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