The potentials of various CO2 capture technologies have been investigated, such as, pressure swing adsorption (PSA), temperature swing adsorption (TSA) and electric swing adsorption (ESA). All these technologies have their advantages and disadvantages; however, ESA shows the most potential in cost reduction, with its theorized low running costs and straightforward method. These technologies, being relatively new, is investigated in depth to identify its short-coming and its capabilities in CO2 adsorption. It was discovered that for optimal efficiency and performance, the compatibility of the integration between the adsorbent and the system is paramount. Research into the different carbon materials was conducted to find potential candidates for integration with the ESA technology.
This thesis also presents a fundamental investigation into the production process of activated carbons and how the resultant structure affects its physical adsorption characteristics. This investigation is conducted theoretically, and an experimental plan has been devised for future testing of the theories and comparison with the literature. Activated carbon cloths (ACC) and nano-casted carbon monolith were also examined as they show potentials, which may rival activated carbons such as carbon fibre composite molecular sieve (CFCMS), in the adsorption of carbon dioxide. Both nanocasted carbons and ACC prove to have potential in the capture of carbon dioxide, but due to the lack of testing, CFCMS is currently the best candidate. This activated carbon adsorbent has a high affinity for CO2, its strong, attrition resistant and electrically conductive. It readily adsorbs carbon dioxide at 30°C, it also adsorbs at one atmosphere of pressure and it has high electrical conductivity, these are all properties that qualify for the ESA system.
This thesis also presents the progressive designs undertaken for the adsorption cell and a discussion of the differences in the actual product to that of the design. This includes both the problems with the actual product and the difference in the setup of the ESA system as opposed to what was designed. Actual experimentation is still required to analyse whether the design system and processes are effective.