engleski

LEACHING BEHAVIOUR OF NATURAL “LOW COST” SORBENTS SATURATED WITH ZINC AND COPPER

The leachability of zinc and copper from natural low-cost sorbents though saturation and leaching study was examined in order to investigate their possible application as materials for permeable reactive barrier (PRB). Examined low cost sorbents were natural and iron-modified zeolite (IMZ), apatite, concentrated apatite, kaolin and raw bentonite. The highest saturation ability towards zinc and copper was detected with raw bentonite and IMZ. Leaching of zinc and copper has been confirmed from all saturated sorbents at pH=2.94, while at pH=6.46 was not detected. This indicates that among investigated sorbents, raw bentonite and IMZ are the most promising materials for removal of zinc and copper in PRB.

low-cost sorbent, leachability, permeable reactive barrier, zinc, copper

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