期刊
JOURNAL OF CLEANER PRODUCTION
卷 333, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2021.130106
关键词
Black liquor; Nitrogen-doped porous carbon; Adsorption; Cr(VI); TC
资金
- Natural Science Foundation of Shandong Province [ZR2020MB139]
- SDUST Research Fund [2018YQJH102]
The direct preparation of adsorption materials from black liquor has great potential in wastewater treatment. The nitrogen-doped porous carbon synthesized showed superior adsorption performance for tetracycline compared to purified lignin-based carbon. The improved adsorption performance was attributed to pore-filling effect, electrostatic interaction, hydrogen bonding, and 7C-7C electron-donor-receptor. There was little difference in the adsorption performance of the two carbons for Cr(VI), and both exhibited excellent anti-interference property.
The direct preparation of adsorption materials from black liquor (BL) produced by the kraft pulping process has great potential in wastewater treatment. A three-dimensional nitrogen-doped porous carbon (N-BLSAC) with high specific surface area and large pore volume was synthesized. The adsorption performance of N-BLSAC for Cr (VI) and tetracycline (TC) was systematically investigated. Compared with the porous carbon prepared from purified lignin (N-PLAC), the adsorption performance of N-BLSAC for TC was more superior. It was not only attributed to the pore-filling effect but also the electrostatic interaction, hydrogen bonding, and 7C-7C electron-donor-receptor. In terms of Cr(VI), the adsorption performance of N-BLSAC and N-PLAC had little difference. Moreover, N-BLSAC and N-PLAC exhibited an excellent anti-interference property. Therefore, the porous carbon prepared by direct carbonization of BL has significant advantages in removing Cr(VI) and TC from aqueous solution.
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