학위논문(석사)--Graduate School of International Studies Ajou University :융합에너지학과,2021. 2
Alternative Abstract
Zimbabwe being a developing country faced with limited energy access and waste management challenges yet having large deposits of open dumped waste had to use MSW as a sustainable alternative source of energy to meet the country’s high energy demand as well as to meet its NDC obligations. Thus this study analyzed the techno-economic evaluation of the integration of AD and gasification using MSW to analyze its feasibility as a means of energy recovery as well as a way to reduce emissions from waste dumping and incineration. In converting WTE the study was aimed at producing biomethane and 10 MWe and 500kWe from AD and gasification respectively. The NPV and LCOE were used as economic indicators to measure the feasibility of the scenarios as well as to determine the most feasible process for implementation in Zimbabwe thus the Monte Carlo Simulation was used to ascertain the sensitivity of the LCOE to cost parameters using the triangular distributions. ASPEN Plus was also used to simulate the AD process as well as a calculator block spreadsheet whereas the Cold Gas Efficiency and Carbon Conversion Efficiency were used to measure the gasification process efficiency. The results showed that the integration of AD and gasification for electricity generation was not economically feasible whereas that for biomethane production was, having a potential saving of about US$33.5 million through LPG import substitution and at least 0.2% mitigation of GHG emissions annually through WTE conversion.
