Possibility of Neutralization and Industrial Use of Waste Fly Ash from Sewage Sludge Combustion

Authors: Sylwester Kulig* and Tomasz Mieloch

DOI: 10.23880/jenr-16000394

Volume 8, Issue 3

Abstract

The article presents research on the possibilities of neutralization and industrial use of waste fly ash generated in the process of sewage sludge incineration. The aim of the research was to develop an effective method of ash stabilization, enabling its safe and economical use in industry, for example as a component of construction materials. It was shown that immobilization of heavy metals is possible using cement as a stabilizer, but the minimum required amount is 50% of the ash mass. Challenges related to the homogenization of the mixture and the disposal of the liquid remaining after the mixing process was also identified. The research results suggest the need for further optimization of the process in order to minimize costs and improve efficiency, which opens up prospects for a wider use of waste ash in industry.

Keywords: Sewage Sludge Fly Ash; Concrete; Cement; Stabilization; Heavy Metals Leaching

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