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Investigation of the SO2 adsorption properties of Ca(OH)2-fly ash systems

✍ Scribed by Paolo Davini

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 396 KB
Volume: 75
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(95)00303-7

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✦ Synopsis

The desulfurization activity of the sorbent obtained by a suitable mixture of calcium hydroxide and fly ash from coal combustion was studied. This sorbent is of pozzolanic nature and shows a better reactivity towards SO2 than the calcium hydroxide itself. This behaviour is closely related to the nature of the products formed and to the greater surface area. The influence of parameters such as the fly ash/Ca(OH)2 and water/ solid ratios, time and temperature of sorbent preparation, temperature and relative humitidy in the adsorption step on the reactivity of the sorbent was particularly studied. The possibility of a recycling process for large amounts of fly ash is pointed out.

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