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HomeKey Engineering MaterialsKey Engineering Materials Vol. 888Chemical Activation of Garcinia mangostana...

Chemical Activation of Garcinia mangostana Mangosteen Shell with Acid-Base for Hexavalent Chromium Adsorption

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Abstract:

This study investigates the potential for using mangosteen shell which is an agricultural waste to chemically activate using potassium hydroxide (KOH) or phosphoric acid (H₃PO₄) and then carbonized for 120 min at 673 K, to adsorb hexavalent chromium (Cr⁶⁺) from solution. The high iodine number and methylene blue number on the base-activation as a good adsorbent that a high surface area of this activated carbonaceous material is effective in removing Cr⁶⁺, with adsorption increasing with temperature, adsorption time, and initial feed concentration. With decreasing solution pH, the maximum of Cr⁶⁺ adsorption capacity and removal at a pH of 2.0 was achieved.

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Polymer Science and Engineering II

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Periodical:

Key Engineering Materials (Volume 888)

Pages:

99-104

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.888.99

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Online since:

June 2021

Authors:

Panida Charnkeitkong*, Siriporn Sripiboon

Keywords:

Adsorption, Chemical Activation, Hexavalent Chromium, Mangosteen

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* - Corresponding Author

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