Characterization of Gas hydrates
Gas hydrates are naturally occurring crystalline formations consisting of crystal structural “cages” which make up cavities where gas molecules can be trapped. Hydrates are formed under specific pressure and temperature conditions in the ground, which limits their presence to permafrost and deep sea...
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Uppsala universitet, Institutionen för geovetenskaper
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ftuppsalauniv:oai:DiVA.org:uu-203043 2023-05-15T17:58:10+02:00 Characterization of Gas hydrates Alfvén, Linda Ignea, Sorin 2013 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203043 eng eng Uppsala universitet, Institutionen för geovetenskaper Självständigt arbete 55 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203043 info:eu-repo/semantics/openAccess Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Geology Geologi Student thesis info:eu-repo/semantics/bachelorThesis text 2013 ftuppsalauniv 2023-02-23T21:47:54Z Gas hydrates are naturally occurring crystalline formations consisting of crystal structural “cages” which make up cavities where gas molecules can be trapped. Hydrates are formed under specific pressure and temperature conditions in the ground, which limits their presence to permafrost and deep sea continental margins. The interest for gas hydrates has grown bigger in the past time, mainly because of the potential as a new energy source but also because of the possibility of carbon dioxide (CO2) storage and its potential linkage to different geological hazards. Gas hydrates are still relatively poorly understood with many questions to be answered. Therefore research in this area is important. In our study we have been focusing on characterization of gas hydrate structures and their gas composition. By using the two different analytical methods X-ray powder diffraction (XRD) and gas chromatography. For this study to be successfully carried out we needed access to equipment and expertise which is only to be found in few places on Earth. Our lab work was therefore done at Pontifica Universidade Catolica do Rio Grande do Sul in Porto Alegre Brazil where a research project in gas hydrates is on going. Because of the research projects secrecy we do not know where our gas hydrate samples come from which mean we cannot link our results to any geographic area. The structural analysis shows structure I hydrate which is characterized by the presence of small gas molecules such as hydrocarbons. The results from the gas content validated that it is structure I since large concentrations of methane gas (CH4) and sulphur gas (H2S) were detected. The presence of these gases implies that the formation conditions are in a marine environment at the sulphate-methane transition zone (SMTZ). Bachelor Thesis permafrost Uppsala University: Publications (DiVA) |
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Uppsala University: Publications (DiVA) |
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ftuppsalauniv |
language |
English |
topic |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Geology Geologi |
spellingShingle |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Geology Geologi Alfvén, Linda Ignea, Sorin Characterization of Gas hydrates |
topic_facet |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Geology Geologi |
description |
Gas hydrates are naturally occurring crystalline formations consisting of crystal structural “cages” which make up cavities where gas molecules can be trapped. Hydrates are formed under specific pressure and temperature conditions in the ground, which limits their presence to permafrost and deep sea continental margins. The interest for gas hydrates has grown bigger in the past time, mainly because of the potential as a new energy source but also because of the possibility of carbon dioxide (CO2) storage and its potential linkage to different geological hazards. Gas hydrates are still relatively poorly understood with many questions to be answered. Therefore research in this area is important. In our study we have been focusing on characterization of gas hydrate structures and their gas composition. By using the two different analytical methods X-ray powder diffraction (XRD) and gas chromatography. For this study to be successfully carried out we needed access to equipment and expertise which is only to be found in few places on Earth. Our lab work was therefore done at Pontifica Universidade Catolica do Rio Grande do Sul in Porto Alegre Brazil where a research project in gas hydrates is on going. Because of the research projects secrecy we do not know where our gas hydrate samples come from which mean we cannot link our results to any geographic area. The structural analysis shows structure I hydrate which is characterized by the presence of small gas molecules such as hydrocarbons. The results from the gas content validated that it is structure I since large concentrations of methane gas (CH4) and sulphur gas (H2S) were detected. The presence of these gases implies that the formation conditions are in a marine environment at the sulphate-methane transition zone (SMTZ). |
format |
Bachelor Thesis |
author |
Alfvén, Linda Ignea, Sorin |
author_facet |
Alfvén, Linda Ignea, Sorin |
author_sort |
Alfvén, Linda |
title |
Characterization of Gas hydrates |
title_short |
Characterization of Gas hydrates |
title_full |
Characterization of Gas hydrates |
title_fullStr |
Characterization of Gas hydrates |
title_full_unstemmed |
Characterization of Gas hydrates |
title_sort |
characterization of gas hydrates |
publisher |
Uppsala universitet, Institutionen för geovetenskaper |
publishDate |
2013 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203043 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Självständigt arbete 55 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-203043 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766166717463003136 |