Browsing Chemistry by Author "Nyale, Sammy M."
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Chemical, mineralogical and morphological changes in weathered coal fly ash: A case study of a brine impacted wet ash dump
Eze, Chuks P.; Nyale, Sammy M.; Akinyeye, Richard O.; Gitari, Wilson; Akinyemi, Segun A.; Fatoba, Olanrewaju O.; Petrik, Leslie (Elsevier, 2013)The mobility of species in coal fly ash (FA), co-disposed with brine using a wet ash handling system, from a coal fired power generating utility has been investigated. The study was conducted in order to establish if the ... -
Comparison of CO2 capture by ex-situ accelerated carbonation and in in-situ naturally weathered coal fly ash
Muriithi, Grace N.; Petrik, Leslie; Fatoba, Olanrewaju O.; M. Gitari, Wilson; Doucet, Frederic J.; Nel, Jaco; Nyale, Sammy M.; Chuks, Paul E. (Elsevier, 2013)Natural weathering at coal power plants ash dams occurs via processes such as carbonation, dissolution, co-precipitation and fluid transport mechanisms which are responsible for the long-term chemical, physical and geochemical ...