Investigation on Treatment of Phosphate-Containing Waste Water by Pyro-Modified Fly Ash

Abstract:

Calcium oxide, as a modified material, is used in pyro-modification of fly ash and the modified fly ash is used to treat phosphorus-containing wastewater, and treatment effect of modified fly ash on phosphorus-containing wastewater in different modification conditions is studied . Results show that good effect is obtained when the mass ratio of fly ash and calcium oxide ratio is 1:1, the roasting temperature is 950 °C, roasting time is 4h, and phosphorus removal rate can up to 92%. SEM pictures of raw fly ash and modified fly ash showed that modified fly ash particles become rough and porous, with a larger surface area, so it has good adsorption properties. Key words: Fly ash; Pyro-modification; Phosphorus-containing wastewater; Adsorption

• Periodical: Applied Mechanics and Materials (Volume 665)
• Pages: 408-411
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.665.408
• Online since: October 2014
• Authors: Jian Mei Zhou
• Keywords: Adsorption, Fly Ash (FA), Phosphorus-Containing Wastewater, Pyro-Modification

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