Abstract
The removal of Sb(III) from waste water is achieved in batch system by using grey and red Erzurum (Oltu) clay which are cheap and natural adsorbents. Adsorption experiments were studied. For this purpose, various important parameters such as contact time, pH, and temperature were examined on the adsorption of Sb(III) ions onto grey and red Erzurum (Oltu) clay. Decreasing amount of Sb(III) ions in the solutions by adsorption was determined with differential pulse anodic stripping voltammetry (DPASV) method. Langmuir and Freundlich isotherms for the adsorption processes were drawn. The adsorption was demonstrated in similarity with Langmuir model. The maximum adsorption capacity of red Erzurum clay for Sb(III) was found to be 9.15 mg/g. Also, surface of the adsorbent was characterized by using FTIR spectroscopy. Red Erzurum clay was applied on real sample (Gediz River), and 72.6% adsorption was obtained.
Highlights
Heavy metal ions such as Sb(III) are toxic and carcinogenic at relatively low concentrations
The FTIR spectra were shown of the grey and red Erzurum clay in Figures 2 and 3
In the spectrum of grey and red Erzurum clay, the definition of a peak near 1600 cm−1 is attributed to the vibration of water molecules retained in the silica or alumina matrix
Summary
Heavy metal ions such as Sb(III) are toxic and carcinogenic at relatively low concentrations. A variety of electrochemical methods have been used for determination of total antimony in natural water samples. Adsorption method is more effective in reducing toxic metal concentration [24, 25]. Natural clay minerals are well known and familiar to mankind from the earliest days of civilization Because of their low cost, abundance in most continents of the world, high adsorption properties, and potential for ion-exchange, clay materials are strong candidates as adsorbents. We characterized grey and red Erzurum clay and used it to remove the toxic metal ions such as Sb(III) from aqueous solution in batch adsorption system. The effects of contact time, pH, and temperature on the adsorption capacity were carried out This method was applied on the real sample
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