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REPOSITORIO INSTITUCIONAL DA UFOP: Pluvial percolation in pyrite-bearing coal stockpiles.

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Academic year: 2018

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Figure 1 - Coal fragment with pyrite (yellow). The scale’s smaller traces indicate millimeters.
Figure 2 - Settling with Superfloc A-130, A-100, C-581 e N-300 solution, and 30 ppm dosage.
Table 1 presents suspension pH and turbidity values. The pH values do not meet the CONAMA (Brazilian EPA agency) rule (bill Nº 357 - March 17 th 2005).
Table 4 - Heavy metals concentration values from the clarified suspension - alkalinized effluent.
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