Optimization and Characterization of Briquettes Developed from Wheat Straw and Coffee Husk as an Alternative Energy Source In Cement Industry
| dc.contributor.advisor | Shegaw Ahmed | |
| dc.contributor.author | Misganaw Workneh | |
| dc.date.accessioned | 2024-03-12T15:24:12Z | |
| dc.date.available | 2024-03-12T15:24:12Z | |
| dc.date.issued | 2023-10 | |
| dc.description.abstract | The process of making cement uses a lot of energy and produces emissions. Both the overall environmental impact of the cement industry and energy security are enhanced by the substitution of alternative fuels for coal. Because they are widely used in the making of cement, fossil fuels like coal, coke, and heavy fuel oil are not renewable and are predicted to release massive volumes of greenhouse gases (GHG) into the atmosphere during their life cycle, which includes mining, processing, transportation, and burning. This study looked at whether briquetting wheat straw and coffee husks would be a suitable alternative energy mix for cement pyro processing. Understanding the physiochemical and thermal properties of raw coffee husk, wheat straw, and mixed briquetted pellet required characterization for proximate analysis, final analysis, calorific value, bulk density, and ash composition of the fuel. Box Behnken design (BBD) was used to optimize process factors that impact the calorific value, such as particle size (<100μm, 100 ~ 175μm, and 175 ~ 250μm), mixing ratio (30%, 50%, and 70%), and carbonization temperature (300°C, 350°C, and 400°C). The findings indicated that the optimized parameters were as follows: a maximum calorific value of 5616.52 Kcal/kg, a mixing ratio of 70% coffee husk to 30% wheat straw, and a particle size of around 100μm. Lastly, the calorific value, volatile matter, moisture content, ash content, and fixed carbon content of the briquette have all been measured and found to be 5676.24 Kcal/Kg, 52.5%, 3.5%, 7.6%, and 39.84%, respectively | |
| dc.identifier.uri | https://etd.aau.edu.et/handle/123456789/2396 | |
| dc.language.iso | en_US | |
| dc.publisher | Addis Ababa University | |
| dc.subject | Briquettes, Wheat Straw, Coffee Husk, Cement Industry, Box Behnken design (BBD) | |
| dc.title | Optimization and Characterization of Briquettes Developed from Wheat Straw and Coffee Husk as an Alternative Energy Source In Cement Industry | |
| dc.type | Thesis |