engleski

ENVIRONMENTAL HAZARD ASSESSMENT OF JAROSITE WASTE USING BATCH LEACHING TESTS

Jarosite waste samples from Trepca Zinc Industry in Kosovo were subjected to two batch leaching tests as an attempt to characterize the leaching behavior and mobility of minor and major elements of jarosite waste. To achieve this, deionized water (HRN EN 12457-2) and synthetic acidic rain (modified SPLP) leaching tests were employed. A two-step acidic treatment in microwave digestion system is used to dissolve jarosite waste samples, followed by determination of Al, Ag, As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, P, Pb, S, Si, Sr and Zn by inductively coupled plasma optical emission spectrometry (ICP-OES). The validation of the procedure was performed by the analysis of two geochemical reference materials S JR-3 and S Jsy-1. Two toxicity leaching test revealed a high metal releasing of Zn, Cd, Co, Cu, Pb and As and the metal release risk for these metals is still very high due the low pH and acid rain. The cluster analysis showed useful data information on relationship between elements in jarosite samples in two different extraction structural conditions (deionized water and synthetic acid rain).

leaching test; jarosite waste; deionized water; synthetic acid rain

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