The Investigation of Thermodynamics Parameters and Adsorption Kinetic of The Maxilon Blue 5G Dye on Turkey Green Clay

Öz

Maxilon Blue 5G dye and Turkey green clay minerals used in adsorption experiments are of great importance recently due to their biological and physicochemical properties. Therefore, kinetic parameters of the adsorption of maxilon blue 5G dye on green clay were investigated. Studies were performed under adsorption conditions such as pH (5-11), maxilon blue 5G dye concentration (0.5.10-6 - 2.10-5 M) and temperature (298-328 K). Turkey green clay and maxilon blue 5G dye were characterized by BET, SEM and XRF. The most favorable conditions for the dye adsorption of clay mineral, which is the support substance, were found to be pH 11 and the temperature was 328 K. The kinetic datas obtained from experimental studies were investigated on three different kinetic models such as pseudo-first-order, pseudo-second-order and intraparticle diffusion and it was determined that the adsorption event was carried out more compatible with the second order equation. Thermodynamic functions such as activation enegy (Ea), enthalpy (ΔH), Gibbs free mechanism (ΔG) and entropy (ΔS) were calculated. According to the results obtained from the experimental datas, the interaction between green clay and maxilon blue 5G are a physical interaction and experimental processes of adsorption are endothermic. These results indicated that green clay can be used as an adsorbent for the adsorption of the maxilon blue 5G (MB-5G).

Anahtar Kelimeler

• Maxilon blue 5G,thermodynamics,green clay,adsorption

Kaynakça

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