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Leveraging the performance of washing cycles to enhance the preprocessing of coal fly ash

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dc.contributor.author Galappaththi, RY
dc.contributor.author Hissalle, LPAD
dc.contributor.author Chamith, PLS
dc.contributor.author Wickrama, MADMG
dc.contributor.author Fernando, WAM
dc.contributor.author Jayawardena, CL
dc.date.accessioned 2023-12-19T03:36:48Z
dc.date.available 2023-12-19T03:36:48Z
dc.date.issued 2023-08-28
dc.identifier.citation Galappaththi, R.Y., Hissalle, L.P.A.D., Chamith, P.L.S., Wickrama, M.A.D.M.G., & Fernando, W.A.M. (2023). Proceedings of the 7th International Symposium on Earth Resources Management & Environment. In C.L. Jayawardena (Ed.), International Symposium on Earth Resources Management & Environment – ISERME 2023: Proceedings of the 7th international Symposium on Earth Resources Management & Environment (pp.89-95). Department of Earth Resources Engineering, University of Moratuwa. https://doi.org/10.31705/ISERME.2023.20
dc.identifier.uri http://dl.lib.uom.lk/handle/123/21965
dc.description.abstract Coal is relatively cheap and abundant fossil fuel contributing to 40% of the world's electricity production. However, coal combustion generates a significant number of by-products, majority being the coal fly ash (CFA). The heterogeneous nature of CFA poses significant challenges in its value-added applications hence, requiring appropriate preprocessing treatments which are expensive and technically savvy. Therefore, this research aims to improve CFA's suitability for the application of value-added products through a technique called “washing cycles” which wash the CFA multiple times using distilled water under a controlled environment with continuous and vigilant monitoring to ensure accuracy throughout the entire process. To optimise this washing cycle process, parameters such as the number of washing cycles, stirring time, and temperature were analysed, and the results were optimised through surface response methodology. The analytical findings on the optimization process demonstrated that a suitable pre-treatment involved employing five washing cycles with a stirring time of 7.5 minutes. Furthermore, varying the temperature did not yield a substantial effect on the effectiveness of washing cycles, since the precipitation of Ca2+ ions even complicate the preprocessing. Therefore, we recommend conducting additional investigations into the efficient use of pre-processed CFA to produce value-added applications adhering to circular economy and sustainability. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Coal fly ash en_US
dc.subject Conductivity en_US
dc.subject Response surface methodology en_US
dc.subject Washing cycles en_US
dc.title Leveraging the performance of washing cycles to enhance the preprocessing of coal fly ash en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2023 en_US
dc.identifier.conference International Symposium on Earth Resources Management & Environment - ISERME 2023 en_US
dc.identifier.place Colombo en_US
dc.identifier.pgnos pp. 89-95 en_US
dc.identifier.proceeding Proceedings of the 7th International Symposium on Earth Resources Management & Environment en_US
dc.identifier.email chulanthaj@uom.lk en_US
dc.identifier.doi https://doi.org/10.31705/ISERME.2023.20 en_US


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