The Adsorption Study of Methylene Blue onto MgO from Various Preparation Methods

Research Article

The Adsorption Study of Methylene Blue onto MgO from Various Preparation Methods

The investigation of Methylene Blue (MB) removal in solution by Magnesium Oxide (MgO) from various preparation methods was studied. Then, these adsorbents were characterized for the surface morphology using Scanning Electron Microscopy (SEM). Moreover, the effect of preparation parameters in MB adsorption onto resulted MgO such as aging time, drying temperature and calcinations temperature was also examined. The MgO was the precipitation of Mg(OH)₂ by using Mg(NO₃)₂.6H₂O as Mg metal source and using Oxalic acid, Urea-NH₄OH, Polyvinly alcohol (PVA)/NH₄OH and only NH₄OH as precipitant which then assigned as MgO-Oxalic, MgO-Urea, MgO-PVA, MgO-NH₄OH, respectively. The results indicated that MgO-Urea showed the highest MB adsorption capacity when compared to other MgO adsorbents. The SEM micrograph exhibited the different particle size and resulted that the finer particle size showed the higher MB adsorption capacity. The optimize conditions to prepare MgO-Urea for MB adsorption were aging time at 60°C for 6 h, dried at 100°C and calcined at 300-500°C.

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R. Wanchanthuek and W. Nunrung, 2011. The Adsorption Study of Methylene Blue onto MgO from Various Preparation Methods. Journal of Environmental Science and Technology, 4: 534-542.

DOI: 10.3923/jest.2011.534.542

URL: https://scialert.net/abstract/?doi=jest.2011.534.542

Journal of Environmental Science and Technology

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R. Wanchanthuek

W. Nunrung

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Research Article

The Adsorption Study of Methylene Blue onto MgO from Various Preparation Methods

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