Preparation of Activated Carbon from Co-Pyrolysis Activation of Fly Ash and Biomass

Min Xie, Jian Cheng, Li Xu, Liwei Wang (), Anqi Chen, Shuhui Zhang () and Xiaohan Ren ()
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Min Xie: Harbin Electric Academy of Science and Technology Co., Ltd., Harbin 150028, China
Jian Cheng: Harbin Electric International Company Limited, Harbin 150028, China
Li Xu: Anhui Special Equipment Inspection Institute, 45 Dalian Road, Hefei 230051, China
Liwei Wang: Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China
Anqi Chen: Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China
Shuhui Zhang: Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China
Xiaohan Ren: Institute of Thermal Science and Technology, Shandong University, Jinan 250061, China

Energies, 2022, vol. 15, issue 18, 1-15

Abstract: Fly ash from waste incineration and waste poplar bark from furniture manufacturing are domestic wastes. In this study, fly ash and poplar bark were used as raw materials to prepare activated carbon via carbonization, steam activation and reagent modification. The effects of the raw material mixing ratio, carbonization temperature, activator concentration and modifier concentration on the physicochemical properties of the semi-coke and activated carbon were investigated through experiments. The experiment showed that when the carbonization temperature was 300 °C, the steam concentration was 20%, the mixing ratio of the poplar bark and fly ash (B:F) was 5:1, and the modifier was 6% K 2 CO 3 reagent and 9% CaCl 2 . The prepared activated carbon had a better yield, specific surface area and pore structure, and had an abundant surface functional group structure. This paper points out the direction for the industrial directional production of activated carbon adsorbents with excellent physical and chemical properties, which has practical significance.

Keywords: fly ash; poplar bark; carbonization; pore structure; activated carbon (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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