REMOVAL OF Cu(II) IONS FROM INDUSTRIAL WASTEWATER BY CHEMICALLY MODIFIED NATURAL PLANT WASTES

Yıl 2017, Sayı: 1, 96 - 103, 09.11.2017

Gozde Ozturk Burcu Kuralay Nilay Gizli

Öz

In this study, the usability of natural wastes as low
cost adsorbents for the removal of Cu (II) ions from industrial waste water has
been investigated. The adsorption capacities of different natural wastes such
as banana, lemon and orange peel, tea waste and sawdust of walnut were
evaluated by a series of batch sorption tests. The grinded materials were
classified with respect to particle size within the range of 1~2 and 0.5~1 mm.
And also, the prepared adsorbents were classified as untreated, treated with
acid (0.6 M of C₂H₂O₄) and treated with base
(0.1 M of NaOH). The adsorption performances of prepared adsorbents for the
sorption of Cu(II) ions were investigated by a series of batch sorption
experiments. The effect of adsorbent type, modification method and adsorbent
size on Cu(II) ion sorption capacities (Q_e) of the prepared
adsorbents have been investigated. According to the results obtained, it has
been observed that the modification with basic solution, enhanced the sorption
performance of the adsorbents and exhibited the highest removal percentage up
to 95% with the sorption capacity (Q_e) of 5 mg/g-adsorbent for both
particle sizes of the base-modified sawdust of walnut. The equilibrium
behaviour of Cu(II) sorption of base-modified sawdust of walnut was well
defined by Freundlich Isotherms.

Anahtar Kelimeler

Adsorption, natural adsorbents, copper removal

Kaynakça

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