Capture of carbon dioxide via melting point swing (MPS) method using salt hydrates

Lau, Alvin Teck-Hui (2005). Capture of carbon dioxide via melting point swing (MPS) method using salt hydrates B.Sc Thesis, School of Engineering, The University of Queensland.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
Lau_Alvin_Teck_Hui_THE19135.pdf Full text application/pdf 1.31MB 0
Author Lau, Alvin Teck-Hui
Thesis Title Capture of carbon dioxide via melting point swing (MPS) method using salt hydrates
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2005
Thesis type B.Sc Thesis
Supervisor Dr Bo Feng
Total pages 62
Language eng
Subjects 0913 Mechanical Engineering
Formatted abstract

Indeed in the last decade or so, the issue of global climate change has become a bigger concern than ever before to the mainstream public. More than ever, the public-at-large is taking notice to the effects of global warming, with apparently erratic and abnormal weather patterns taking place the world over. Even Hollywood has popularised the issue of global warming, with recent movies like ‘The Day After Tomorrow (20th Century Fox, 2004) showcasing the, albeit exaggerated, apocalyptic effects of a global climate system collapse.

Despite uncertainty over how anthropogenic carbon dioxide (CO2) concentration in the atmosphere is influencing the rise of global average temperatures, there is overwhelming consensus in the mainstream scientific fraternity that mankind plays a discerning role on the Earth’s climate, with fossil fuel combustion being the main contributing factor.

The purpose of this project is to investigate on the little known concept of melting point swing (MPS) absorption using the unique properties of some salt hydrates like tetramethylammonium fluoride tetrahydrate (TMAF), [(CH 3 )4N]F.4H2O, or tetraethylammonium acetate tetrahydrate (TEAA), [(C2H5)4N]CH3CO2.4H2O. The melts of these salts have been discovered to exhibit very impressive CO2 affinity and absorption capacities (Quinn et al., 1995a & 1995c). It has been shown that CO2 can be efficiently absorbed by these salt hydrates at a low temperature (ca. 50 °C) and rapidly released when the temperature is lowered to solidify the salt (ca. 30 °C). This represents the idea of MPS, where the CO2 is absorbed and desorbed by “swinging” around the melting point of the absorbent. The utilisation of this technique incorporating suitable salt hydrates has the potential to become an economical, practical and highly effective means of capturing CO2 (Quinn et al., 1995c).

Researches done to date by Quinn et al. (1995a, 1995b, 1995c, 2001) and Flowers (2002) have shown very favourable results for employing such salt hydrates as CO2 absorbents. Near 100% absorbency, high capacity and high selectivity of CO2 have been reported. The aim of this project is to report findings from prior art and thereafter, design an experimental setup capable of testing the novel concept of MPS absorption and investigate other salt hydrates that can be used with this novel method. An all-in-one experimental setup was conceived.

Keyword Melting point swing (MPS)
Salt hydrates
Additional Notes * Mechanical engineering undergraduate theses. Sem 2, 2005

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
Citation counts: Google Scholar Search Google Scholar
Created: Fri, 10 May 2013, 12:00:40 EST by Mr Yun Xiao on behalf of Scholarly Communication and Digitisation Service