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2018•ZANCO Journal of Pure and Applied SciencesOpen access

Preparation and Characterization of Activated Carbon from Kurdistan Walnut Shell Activated by NaOH

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Abstract

Kurdistan walnut shell (KWS) was examined for preparation of activated carbon using sodium hydroxide as chemical agent. The characterisations of the Kurdistan walnut shell activated carbon by sodium hydroxide (WSAC-NaOH) were studied using different techniques. pH of point of zero charge (pHpzc), iodine number and proximate analysis. The adsorption of methylene blue by prepared activated carbon was analyzed by the Langmuir and Freundlich adsorption isotherms. The data fitted well to the Freundlich isotherm with the maximum adsorption capacity = 344.8 mg/g for Langmuir adsorption isotherm. The analysis showed that the activated carbon derived from walnut shell activated by sodium hydroxide is more capable than commercial activated carbon (CAC) and can be used as a possible adsorbent.

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Kurdistan walnut shell (KWS) was examined for preparation of activated carbon using sodium hydroxide as chemical agent. The characterisations of the Kurdistan walnut shell activated carbon by sodium hydroxide (WSAC-NaOH) were studied using different techniques. pH of point of zero charge (pHpzc), iodine number and proximate analysis. The adsorption of methylene blue by prepared activated carbon was analyzed by the Langmuir and Freundlich adsorption isotherms. The data fitted well to the Freundlich isotherm with the maximum adsorption capacity = 344.8 mg/g for Langmuir adsorption isotherm. The analysis showed that the activated carbon derived from walnut shell activated by sodium hydroxide is more capable than commercial activated carbon (CAC) and can be used as a possible adsorbent.

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Available abstract

Kurdistan walnut shell (KWS) was examined for preparation of activated carbon using sodium hydroxide as chemical agent. The characterisations of the Kurdistan walnut shell activated carbon by sodium hydroxide (WSAC-NaOH) were studied using different techniques. pH of point of zero charge (pHpzc), iodine number and proximate analysis. The adsorption of methylene blue by prepared activated carbon was analyzed by the Langmuir and Freundlich adsorption isotherms. The data fitted well to the Freundlich isotherm with the maximum adsorption capacity = 344.8 mg/g for Langmuir adsorption isotherm. The analysis showed that the activated carbon derived from walnut shell activated by sodium hydroxide is more capable than commercial activated carbon (CAC) and can be used as a possible adsorbent.

Key concepts: Activated carbon, Freundlich equation, Adsorption, Langmuir, Sodium hydroxide, Point of zero charge, Chemistry, Potassium hydroxide

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