Effects of the ultrasound-assisted H<sub>3</sub>PO<sub>4</sub> impregnation of sawdust on the properties of activated carbons produced from it

ZHANG Zong-bo; LIU Xiao-yang; LI Da-wei; GAO Tian-tian; LEI Yu-qi; WU Bao-gui; ZHAO Jia-wei; WANG Yan-kui; WEI Ling

doi:10.1016/S1872-5805(18)60349-X

Volume 33 Issue 5

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Article Navigation > New Carbon Mater. > 2018 > 33(5): 409-416

ZHANG Zong-bo, LIU Xiao-yang, LI Da-wei, GAO Tian-tian, LEI Yu-qi, WU Bao-gui, ZHAO Jia-wei, WANG Yan-kui, WEI Ling. Effects of the ultrasound-assisted H3PO4 impregnation of sawdust on the properties of activated carbons produced from it. New Carbon Mater., 2018, 33(5): 409-416. doi: 10.1016/S1872-5805(18)60349-X

Citation:

ZHANG Zong-bo, LIU Xiao-yang, LI Da-wei, GAO Tian-tian, LEI Yu-qi, WU Bao-gui, ZHAO Jia-wei, WANG Yan-kui, WEI Ling. Effects of the ultrasound-assisted H₃PO₄ impregnation of sawdust on the properties of activated carbons produced from it. New Carbon Mater., 2018, 33(5): 409-416. doi: 10.1016/S1872-5805(18)60349-X

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Effects of the ultrasound-assisted H₃PO₄ impregnation of sawdust on the properties of activated carbons produced from it

doi: 10.1016/S1872-5805(18)60349-X

1.
College of Mechanical and Electrical Engineering, China University of Petroleum(East China), Qingdao 266580, China;
2.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum(East China), Qingdao 266580, China

Funds: National Natural Science Foundation of China (51205414, 51407200, 21604094); Shandong Natural Science Foundation (ZR2017QEE006); Fundamental Research Funds for the Central Universities (18CX02121A, 16CX05012A, 14CX02199).

Received Date: 2018-07-30
Accepted Date: 2018-11-01
Rev Recd Date: 2018-09-30
Publish Date: 2018-10-28

Abstract

Abstract

The effects of the ultrasound-assisted H₃PO₄ impregnation of sawdust on the pore structure, morphology, surface functional groups, and adsorption capacities for iodine and methylene blue of activated carbons produced from it were investigated. Results showed that ultrasonic impregnation promoted the mass transfer and uptake of H₃PO₄, which simultaneously increased specific surface area, pore volumes of micropores, mesopores and ultramicropores, and adsorption capacities for iodine and methylene blue. Long ultrasonic impregnation times were unnecessary. The maximum surface area (1 504 m²/g) was achieved at a total impregnation time of 45 min with 5 min ultrasound irradiation. Compared with impregnation without the ultrasound treatment, the ultrasonic-assisted impregnation reduced the impregnation time by 85%.
- Activated carbon,
- Ultrasound,
- Impregnation,
- H₃PO₄ activation

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References(41)

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