Preparation of Activated Carbon from Bagasse by Microwave-Assisted Phosphoric Acid Activation

Suthatip  SINYOUNG; Weerawut  CHAIWAT; Kittipong  KUNCHARIYAKUN

doi:10.48048/wjst.2021.22796

Authors

Suthatip SINYOUNG Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla 90112, Thailand
Weerawut CHAIWAT Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
Kittipong KUNCHARIYAKUN School of Engineering and Technology, Walailak University, Nakhon Si Thammarat 80160, Thailand

DOI:

https://doi.org/10.48048/wjst.2021.22796

Keywords:

Activated carbon, Bagasse, Microwave energy, Phosphoric acid

Abstract

This research focuses on the utilization of bagasse as activated carbon (AC) under microwave-assisted phosphoric acid activation. The AC was activated using various frequencies of microwave energy combined with phosphoric acid before the carbonization process. Results indicated that the AC obtained from bagasse under microwave-assisted phosphoric acid had improved properties, i.e. fixed carbon, surface area, and iodine adsorption capacity. However, the loss of AC properties could be attributed to microwave energy exceeding a limit of 800 W. The optimum activated condition in this research was the use of microwave energy 500 W assisted phosphoric acid, which had fixed carbon, surface area, and iodine adsorption capacity at 88.34 ± 0.67 %, 781 m²/g, and 852 ± 6.0 mg/g, respectively.

HIGHLIGHTS

Microwave energy and phosphoric acid is applied to pretreat bagasse
Bagasse pretreatment by microwave-assisted H₃PO₄ enhances the properties of AC
Optimum condition is pretreatment by phosphoric acid and microwave energy at 500 W

GRAPHICAL ABSTRACT

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