Solidification / stabilization of Krivaja [Serbia] sediment with lime, cement and clay | Solidifikacija / stabilizacija sedimenta Krivaje [Srbija] primenom kreča, cementa i gline
2010
Dalmacija, M. | Krčmar, D. | Dalmacija, B. | Rončević, S. | Karlović, E. | Prica, M. | Tričković, J. | Rajić, Lj., Prirodno-matematički fakultet, Novi Sad (Serbia). Departman za hemiju, biohemiju i zaštitu životne sredine
Based on the results of monitoring Krivaja waterflow, it was found that the sediment is highly contaminated with copper and zinc, which are found in concentrations that pose a risk to the environment, and quality of surface water. For the remediation of sediment was chosen solidification / stabilization (S/S) with lime, cement and clay. In order to determine the long-term behaviour of S/S mixtures, leaching tests were performed in accordance with ANS diffusion test for a period of 90 days. The results indicate that clay is the most effective immobilization agent for these two metals with cumulative fraction of metals leached less than 0.5%. Diffusion coefficients for copper and zinc were in the range of 1.1 E-13 square cm/s to 7.1 E-13 square cm/s, on the basis of which it can be concluded that the metals in the mixtures with clay, are almost completely immobilized.
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