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Research Proposal Name Address email A: PROPOSAL TITLE: The Comparative Effects of Different Acid Digestions on Fly Ash Carbon’s Porous Structure, Surface Functionality and CO2 Capacity. B: Aims and Background Aims: A Study of the de-ashing effects and mechanisms on the porous structure and surface functionality and CO2 capacity of fly ash carbons, in order to develop a beneficial and economical process for commercial adaption. A examination in the effects of different digestion steps on the surface area change, pore diameter and pore volume (micro- and macropores) of fly ash carbons. Analysis of the chemical and textural characterizations on the surface of fly ash carbons before and after acid digestion. Comparison between the final CO2 capacity through different digestion steps. BackgroundThe reduction in Carbon Dioxide emission in order to address the consequences of climate change is a matter of concern world wide（Pevida et al., 2008. The IPCC’s Special Report on Carbon Dioxide Capture and Storage (CCS) (ICPP,2005) made a strong case for the adoption of this family of technologies to achieve the large-scale reductions in CO2 that are required during this century (Shackley and Verma, 2008). The CO2 capture step is projected to account for a majority of the expense incurred for the overall carbon capture and subsequent sequestration process (Drage et al., 2007; Drage et al., 2008), thus, the development of low cost, and environmentally effective technologies, is crucial. The current methods of CO2 capture from flue gas include absorption, adsorption, cryogenic distillation and membrane separation. Adsorption is considered one of the most appealing options for CO2 capture（Arenillas et al., 2005; Pevida et al., 2008. Porous materials, such as molecular sieves and zeolites, as well as activated carbon, are suitable for CO2 capture by solid sorbent adsorption due to their high CO2 selectivity and adsorption capacity, their low cost and their high amenability