Effects of pH and Aeration on Copper Migration in Above-Sediment Water
K. Loska, D. Wiechuła1
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Silesian Technical University, Institute of Engineering of Water and Wastewater, ul. Konarskiego 18, 44-100 Gliwice, Poland
1Silesian University of Medicine, Department of Toxicology, ul. Jagiellonska 4, 41-200 Sosnowiec, Poland
Pol. J. Environ. Stud. 2000;9(5):433–437
The research analyzed the influence of pH and aeration of the above-sediment water on the amount of copper released from the contaminated bottom sediments from the Rybnik Reservoir. Leaching of copper from the bottom sediment in the non-aerated systems was the highest when pH reached 2.0-3.5. For the aerated systems, the range was from 2.0 to 4.5. A dependence of the amounts of leached water on the leaching time was also observed. Sulfides were a predominant form of copper occurrence in the bottom sediment (60%). The remaining forms were as follows: organically bound, carbonates > residual > adsorbed > exchangeable.