Effect Of High Temperature On Immobilization
Of Heavy Metals In Concrete With An Addition Of
Galvanic Sludge
Author(s)
A. Król
Abstract
The paper presents the results of research devoted to the stability of concretes
based on various cements, which contain added galvanic sludge content in the
circumstances of various temperature levels (200°C, 400°C, 600°C). The
mechanical properties of stabilizing concretes under various temperatures are
presented. The particular focus was placed on the immobilization of heavy
metals following the process of roasting concrete specimens under high
temperatures.
Keywords: concrete, leaching, heavy metals, high temperature conditions,
galvanic sludge.
1 Introduction
The neutralization of waste containing heavy metals constitutes a complex task
since the selection of an appropriate method of neutralization should secure the
irreversible deactivation of heavy metals. The neutralization of the waste applies
the conventional methods (most frequently combustion). However, the
application of such methods results in the generation of post-processing waste
(e.g. fly ash or slag), which still contains heavy metals.
Galvanic sewage sludge originating from the plants in the branch of metal
surface work constitutes, in the majority of cases, quite hazardous waste. As a
result of huge heavy metals content its disposal is difficult. One of the methods
for neutralizing this type of sludge consists of solidifying it in materials based on
mineral binders.
Keywords
concrete, leaching, heavy metals, high temperature conditions,
galvanic sludge.
Related Book
Other papers in this volume
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