张俊杰同学所撰写的论文“Enhance SO₂ adsorption performance of biochar modified by CO₂ activation and amine impregnation”被《Fuel》期刊录用。

在此，对张俊杰同学表示祝贺，希望他在未来的学习和工作中继续努力，再创佳绩，也祝流化床与生物质团队蒸蒸日上，成果多多！

Abstract

To enhance the SO₂ adsorption of biochar, CO₂ activation and impregnation with methyldiethanolamine (MDEA) was simultaneously employed to improve its physicochemical characteristics. Furthermore, the effects of the pore structure and nitrogen functionality on SO₂ adsorption were also explored. The results show that after CO₂ activation, the specific surface area of biochar increased from 56.91 m²/g to 755.35 m²/g, while this figure dropped to 25.54 m²/g or even lower after impregnation with MDEA. Although the pore structure of activated biochar was destroyed, the surface nitrogen content of the nitrogen-enriched biochar (with 10% MDEA impregnation) increased from 1.46% to its highest level (7.20%); moreover, as indicated by Fourier Transform Infrared (FTIR) spectroscopy, the nitrogen functional groups introduced on the surface of the nitrogen-enriched biochar were mainly C-N. After 10% MDEA impregnation, the maximum SO₂ adsorption capacity increased from 57.8 mg/g to 156.2 mg/g. Changes to physical and chemical properties in the nitrogen-enriched biochar indicate that the nitrogen functional groups on the surface are more important than the pore structure for SO₂ adsorption at 393 K, and that the dominant nitrogen species are quaternary nitrogen.

Graphical Abstract