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Title: Lignin Based Activated Carbon Using H3PO4 Activation

Source: Polymers

Author(s)Yang, Zhongzhi ; Gleisner, Roland ; H. Mann, Doreen ; Xu, Junming ; Jiang, Jianchun ; Zhu, J.Y.

Publication Year: 2020  View PDF »

Category: Journal Articles

Abstract: Activated carbon (AC) with a very high surface area of over 2000 m2/g was produced from low sulfur acid hydrotropic lignin (AHL) from poplar wood using H3PO4 at a moderate temperature of 450 ◦C (AHL-AC6). ACs with similar surface areas were also obtained under the same activation condition from commercial hardwood alkali lignin and lignosulfonate. Initial evaluation of AC performance was carried out using nitrogen adsorption-desorption and dye adsorption. AHL-AC6 exhibited the best specifc surface area and dye adsorption performance. Furthermore, the adsorption results of congo red (CR) and methylene blue (MB) showed AHL-AC6 had greater adsorption capacity than those reported in literature. The dye adsorption data ft to the Langmuir model well. The ftting parameter suggests the adsorption is nearly strong and near irreversible, especially for MB. The present study for the frst time provided a procedure for producing AC from lignin with Brunauer–Emmett–Teller (BET) surface area >2000 m2/g using low cost and low environmental impact H3PO4 at moderate temperatures.

Keywords: lignin; activated carbon; phosphoric acid activation; dye adsorption

Publication Review Process: Formally Refereed

File size: 3,072 kb(s)

Date posted: 03/16/2021

This publication is also viewable on Treesearch:  view
RITS Product ID: 10125
Current FPL Scientist associated with this product
Zhu, JunYong
Research General Engineer

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