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year 27, Issue 1 (Iranian Nano-Photonic Conference 2020 2020)
ICOP & ICPET _ INPC _ ICOFS 2020, 27(1): 10-12 |
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Khajoei S, Hakimi M, Motahari H, Hashemian S. Investigation of methyl orange dye removal by activated carbon adsorbent by using UV-Vis technique. ICOP & ICPET _ INPC _ ICOFS 2020; 27 (1) :10-12
URL: http://opsi.ir/article-1-2240-en.html
URL: http://opsi.ir/article-1-2240-en.html
1- Research and Technology magnetism Laboratory, Physics Department, Yazd University, Yazd, Iran.
2- Atomic & Molecular groups, Physics Department, Yazd University, Yazd, Iran.
3- Islamic Azad University, Yazd Branch, Chemistry Department, Yazd, Iran.
2- Atomic & Molecular groups, Physics Department, Yazd University, Yazd, Iran.
3- Islamic Azad University, Yazd Branch, Chemistry Department, Yazd, Iran.
Abstract: (1166 Views)
In the present work, first the absorption spectrum of different concentrations of methyl orange dye at different pH were investigated using UV-Vis spectroscopy. Examination of the color spectrum showed that with increasing concentration, the intensity of maximum light absorption increases, but the position of this peak shifts toward to longer wavelengths as decrease of the pH and the environment becomes acidic, which is due to nature of methyl orange dye and its color change in acidic and alkaline environments. Then, coal sample were used to make activated carbon and dye removal. The activation of coal was done by heat at different temperatures and 800°C temperature was selected as the optimal cooking temperature by examining the spectrum of samples after dye removed. It was observed that the activation of coal by heat significantly increases the dye removal efficiency with comparison the spectrum of the original and activated samples.
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