Effect of Chemical Activation of a lagoon Ash on its Physico-Chemico-Mineralogical Properties

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Title: Effect of Chemical Activation of a lagoon Ash on its Physico-Chemico-Mineralogical Properties

Author(s): P. K. Kolay and D. N. Singh

Publication: Special Publication

Volume: 199

Issue:

Appears on pages(s): 43-54

Keywords: lagoon ash; synthesis; water-interac tion; zeolites

Date: 6/1/2001

Abstract:
Synopsis: The amount of ash, produced from the coal fired thermal power plants and its hazardous impact on the environment is continuously increasing. This poses a challenging task of safe handling, proper disposal and utilisation of the ash. The huge quantity of ash produced from these power plants calls for a special attention in terms of its proper utilisation, either directly, or conversion into a value-added product. Chemical activation of the coal ash is being practised for synthesising ash zeolites. These zeolites are being used for various environmental protection schemes and other industrial processes. With this object in view, an effort has been made in this paper to study the effect of chemical activation of a typical class F lagoon ash. This chemical activation is achieved under controlled conditions, in the laboratory, with different concentrations of alkali (NaOH) and for different durations of activation.