Microwave pyrolysis with KOH/NaOH mixture activation: A new approach to produce micro-mesoporous activated carbon for textile dye adsorption

Liew, Rock Keey and Lam, Su Shiung and Cheng, C. K. and Elfina, Azwar and Yek, Peter Nai Yuh and Lim, Xin Yi and Ng, Jo Han and Ahmad, Jusoh and Lam, Wei Haur and Mohd Danial, Ibrahim and Ma, Nyuk Ling (2018) Microwave pyrolysis with KOH/NaOH mixture activation: A new approach to produce micro-mesoporous activated carbon for textile dye adsorption. Bioresource Technology, 266. pp. 1-10. ISSN 0960-8524. (Published)

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Abstract

A micro-mesoporous activated carbon (AC) was produced via an innovative approach combining microwave pyrolysis and chemical activation using NaOH/KOH mixture. The pyrolysis was examined over different chemical impregnation ratio, microwave power, microwave irradiation time and types of activating agents for the yield, chemical composition, and porous characteristic of the AC obtained. The AC was then tested for its feasibility as textile dye adsorbent. About 29 wt% yield of AC was obtained from the banana peel with low ash and moisture (< 5 wt%), and showed a micro-mesoporous structure with high BET surface area (≤ 1038 m 2/g) and pore volume (≤ 0.80 cm 3/g), indicating that it can be utilized as adsorbent to remove dye. Up to 90% adsorption of malachite green dye was achieved by the AC.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Activated carbon; Activation; Hydroxide mixture; Microwave; Pyrolysis
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: PM Dr. Chin Kui Cheng
Date Deposited: 12 Sep 2018 03:49
Last Modified: 12 Sep 2018 03:49
URI: http://umpir.ump.edu.my/id/eprint/21426
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