https://doi.org/10.15255/KUI.2008.006
Published: Kem. Ind. 58 (4) (2009) 159–163
Paper reference number: KUI-06/2008
Paper type: Preliminary communication
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The Change in Surface Area Properties of Blast Furnace Sludge Treated by Acetic Acid

A. Rađenović, J. Malina and G. Matijašić

Abstract

Blast furnace sludge-BFS is a by-product and waste material of the iron and steel industry. Recently, the adsorption capabilities of blast furnace sludge have been attracting great interest. It is known that materials with modified surface properties can be obtained by different chemical and thermal treatments. The aim of this work was to investigate the influence of chemical treatment by acetic acid and thermal treatment by heating at 700 °C, on the surface properties of blast furnace sludge. Chemical treatment was performed by acetic acid adsorption on BFS. Microscopic observation was conducted using scanning electron microscopy (SEM method). Changes in examined surface area properties were analyzed by Brunauer-Emmett-Teller (BET) and Barrett-Joyner-Halenda (BJH) methods. Increasing of specific surface area, decreasing of pore size and better pore size distribution in BFS samples were registered after the applied experimental procedure. The obtained results revealed that the performed chemical and heat treatment presented the activation of blast furnace sludge.

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Keywords

blast furnace sludge, chemical treatment, thermal treatment, surface properties