期刊
INDUSTRIAL CROPS AND PRODUCTS
卷 187, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.indcrop.2022.115314
关键词
Lignin; Porous carbon; Adsorption; Wastewater; Organic dye
资金
- Guangdong Provincial Key Laboratory of Plant Resources Biorefinery [2021GDKLPRB-K02, 2021GDKLPRB04]
- National Natural Science Foundation of China [22078113, 22108086]
- China Postdoctoral Science Foundation [BX20200134, 2021M701251]
- Science and Technology Project of Guangzhou [202102020891, 202102080416, 202102020713]
- Guangdong Basic and Applied Basic Research Foundation [2020A1515110855, 2022A1515010323]
This study develops a porous carbon material derived from renewable lignin, which can produce clean water and organic dye from dye wastewater simultaneously, and exhibits high adsorption performance and reusability.
Porous carbon adsorption is regarded as a promising technology for addressing issues of organic dye wastewater remediation and fresh water production. However, there are critical challenges in existing porous carbon adsorbents, including the relatively poor adsorption capacity, low removal rate, large consumption of activator, weak recoverability of organic dye and adsorbent, which need to be further investigated. Herein, we develop a hierarchical porous carbon material directly derived from renewable lignin that can serve as a high-performance and reusable adsorbent for simultaneous production of clean water and organic dye from simulated dye wastewater. Benefitting from the inherent hierarchical microstructures, the lignin-derived porous carbon (LPC) exhibits excellent adsorption capacity (979.29 mg/g) and high removal rate (8.16 mg/(g.min)) for Orange II dye. In addition, the LPC offers an attractive advantage for wastewater treatment that the organic dye, eluting agent and water all can be easily recycled and reused through facile filtration and distillation. Notably, the as-synthesized LPC can significantly reduce wastewater treatment costs by reusing multiple times and thus exhibits infinite possibility to transform a dyeing factory from a wastewater discharger to a clean water and organic dye producer.
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