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Study on the Adsorption of Methylene Blue on a New Carbon Black

Shaoming Yu

Abstract

The adsorption of methylene blue on XC-72 carbon was investigated. The results showed that the adsorption equilibrium time of methylene blue is 3 hours. The adsorption of methylene blue on XC-72 carbon fits well the pseudo-second-order rate equation and Langmuir isotherm model. While pH is 6.5,the maximum adsorption capacity was 40.11 mg·g-1 at 20℃ . The adsorption capacity improved with the pH improving. The adsorption of methylene blue is a spontaneous,entropy increasing,endothermic process.

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Key concepts: Methylene blue, Adsorption, Endothermic process, Chemistry, Langmuir adsorption model, Nuclear chemistry, Chemical engineering, Organic chemistry