Abstract
Leaf litter potential of different tree species (Betula pendula, Litter mixed foliage, Quercus robur) as a sorption material in relation to Fe 2+ and Fe 3+ ions was investigated. The sorption process was carried out in several stages until complete iron saturation of the sorption material. The experiment was conducted in the statistical mode, with constant stirring for 120 minutes. To restore the sorption properties of leaf litter and to achieve complete iron ions desorption the pollutant saturated sorbent was subjected to the acid regeneration. Hydrochloric acid in a dilution of 1:8 was found to be optimal eluent. The highest absorption is achieved in the first phase of the study due to the formation of hydrogen bonds between leaf litter cellulose and metal hydroxyl. The study revealed that the sorption material should be used for primary treatment, as the effectiveness of subsequent regeneration does not exceed 40 %.
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