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  • Essay / The Geological Features of Ethiopia - 1764

    Ethiopia, with a growth rate of 8.5 percent per year, is one of the 12th fastest growing economies in the world in 2012. As major sectors of the economy, agriculture, industry and services contribute 4.9 percent, 13.6 percent and 11.1 percent, respectively (Geiger and Moller, 2013). With this rate of growth, the country aims to reach the intermediate economic class in 2025 (Ministry, 2011). The Growth and Transformation Plan (GTP) pays vital attention to the manufacturing sectors which constitute the basic engine of economic growth and the cement manufacturing industry seen as contributing to the success of this plan (Ministér, 2011). The geological features of Ethiopia with its large deposit of limestone and the rapid growth of the infrastructure sector, with their huge demand for cement, provide incentives for the production of cement and the expansion of cement factories in the country ( Edwards, 2013). Additionally, there is a growing need for housing and other construction due to increasing population and growing economic cycles. This situation has led to the creation of new cement plants at a rapid rate of expansion (Amin and Ali, 2010). Ethiopia planned to increase cement production to supply the domestic and foreign market under the five-year Growth and Transformation Plan (GTP), from the initial capacity of 2.7 million tonnes in 2009/10 to 27 million tonnes in 2014/15 and to reach an annual per year of cement. consumption per capita of 300 kg (Ministér, 2011). The effort of the country's investment agency (2008) in this regard is geared towards promoting access and supply potential of cement raw materials in the country by motivating investors to invest in a cement plant by defining opportunities and incentives for investment in cement. .... middle of paper ......d coal injected into the kiln for clinkering and 60% into the calciner for calcination. Regarding their contribution to pollution, different researchers explain: the extraction process generally does not pose significant problems (Van Oss & Padovani, 2002). On the one hand, the sources of dust emissions are kilns, crushers, grinders, clinker cookers and handling equipment (Kumar and Armani 2012). Additionally, when manufacturing clinker by pyroprocessing, there is a considerable source of emissions such as cement kiln dust (CKD), gaseous like CO2 during calcination and combustion, sulfur oxide , nitrogen oxide and dioxin (Van Oss & Padovani, 2002). Thus, this study focuses on the two processing units (Fig. 1) because they are a major source of impacts. They needed more energy sources and raw materials, releasing pollutants into the environment during their process..