Adsorption of 2, 6-dichlorophenol-indopheno Sodium dehydrate salt from aqueous solutions using Nano magnesium oxide; A thermodynamic study

Abstract

The objectives of this study is to adsorb 2, 6-dichloro phenol indophenol sodium salt using nano magnesium oxide as a nano surface. The adsorption of dyes by using the nanoparticles is a modern and effective way to remove contaminants from their solutions. The UV spectrophotometer was used to follow the dye concentrations in the water solution after mixing them with 0.1 g of MgO and different concentrations of the dye solution were used to obtain the isotherm adsorption. The application of the Langmuir and Freundlich isotherms adsorption was investigated. The isotherm estimate shows that the Freundlich model obtain better fits to the experimental equilibrium data than the Langmuir model. The effect of temperature was investigated, the best temperature was 298 K. The adsorption decreases by increasing the temperature. The values of ΔG revealed that the process of adsorption was spontaneous within the experimental conditions. The effect of the acidic function was also studied. The adsorption value changed with the changing acidic function. The results showed that nano magnesium oxide can adsorb 2, 6dichloro phenol indophenol sodium salt efficiently.

إزالة صبغة الفوكسين القاعدية عن طريق الامتزاز على متراكب نانوي CuCo2O4 كسطح ماص نشط

“…8 29 . According to the classification of Giles' S4 30 , there was a high affinity of dye molecules towards adsorbent surface at 298-338K 31 . Adsorption isotherms Langmuir originally proposed that the adsorption process occurs on one layer, after that Freundlich and Temkin modified Langmuir's Eqs.…”

Adsorption of Malachite Green Oxalate Dye by CuCo₂O₄/MgO Spinel Oxide Nanocomposite

“…The adsorption process is one of its important applications [9]. This probably arises from enhanced catalytic properties, including high BET surface area and moderate band gap [10].…”