โ Scribed by P.K. Kolay; D.N. Singh; M.V.R. Murti
No coin nor oath required. For personal study only.
The amount of ash, and its hazardous impact on the environment, produced from the coal ยฎred thermal power plants is continuously increasing. This poses a very challenging task of safe handling, proper disposal and utilisation of the ash. A very common method of disposal of the ash is the wet disposal, in a slurry form, in the lands nearby thermal power plants, known as lagoons. During the process of wet disposal, the ash interacts with water and looses its original physical as well as the chemical properties. The ashยฑwater interaction may also lead to the formation of zeolites over a period of time, which may be used for various industrial applications. This paper deals with the effect of water interaction, and hence the formation of zeolite, on a typical Class `F' lagoon ash, from India.
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## Abstract A high AlโSi Chinese fly ash from Dou He power plant (Tangshan city, Hebei Province, Eastern China) was selected as starting material of the zeolitisation process. Zeolitic material was obtained by conventional alkaline activation using NaOH and KOH solutions. The process of synthesis w