Assessment of Fly Ashes Using the Leaching Test According to the Decree No.338/1997 Code - Parameters Affecting the Leachability of Selected Inorganic Pollutants

Authors

  • P. Janos Research Institute of Inorganic Chemistry. Usti nad Labem
  • J. Hodslavska Research Institute of Inorganic Chemistry. Usti nad Labem
  • J. Ditz Research Institute of Inorganic Chemistry. Usti nad Labem

Abstract

A new Czech regulatory leaching test according to the decree No. 338/1997 Code was used to assess the leachability of selected inorganic contaminants, in particular heavy metals, from fly ash. The fly ash was collected from an electrostatic precipitator in a power station fuelled with North-Bohemian brown coal. An influence of the main parameters of the test, such as the weight of the sample, solid-liquid ratio, duration of the leaching and the way of agitation was investigated. A satisfactory repeatibility of the leaching test was found for most elements (RSD 10%) except for As (RSD ca. 33%), Fe (RSD ca. 20%), Cu (RSD ca. 13%), and Ba (RSD ca. 10%). As the new Czech regulation is compatible with some foreign standards (DIN 38414/4, draft of the European standard prEN 12457), the results obtained in this paper could be generalized.

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Published

1999-11-15

How to Cite

Janos, P., Hodslavska, J., & Ditz, J. (1999). Assessment of Fly Ashes Using the Leaching Test According to the Decree No.338/1997 Code - Parameters Affecting the Leachability of Selected Inorganic Pollutants. Chemické Listy, 93(10). Retrieved from http://blog.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2575

Issue

Vol. 93 No. 10 (1999)

Section

Articles