Preparation of high-performance adsorption carbon materials via hydrothermal carbonization of agricultural solid waste-grapevines

IF 8.4 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Journal of Environmental Management Pub Date : 2025-04-22 DOI:10.1016/j.jenvman.2025.125353

Kun Wang , Yulu Yang , Chang Liu , Yanan Li , Chang-Qing Cao , Pei-Gao Duan , Liang Pei , Jia Duo

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Abstract

This study uses grapevine agricultural waste to prepare grapevine-derived biobased activated carbon (AGV) through chemical activation with NaOH after hydrothermal carbonization. A comprehensive analysis of the adsorption performance and mechanisms of AGV for methylene blue (MB) was conducted. The results demonstrated that AGV possesses a highly developed reticular pore structure, with a specific surface area of 3230.57 m² g⁻¹ and is rich in oxygen functional groups (OFGs). At pH 7.0, AGV achieved a removal rate of 90 % within 30 min, with a maximum adsorption capacity of 661.7 mg g⁻¹, surpassing that of most previously reported activated carbons. Adsorption followed the Langmuir isotherm and pseudo-second-order kinetics, with thermodynamics confirming endothermic and spontaneous MB adsorption. The adsorption mechanism primarily involves chemical adsorption, including electrostatic interactions, pore filling, hydrogen bonding, acid-base interactions, and π-π stacking. The AGV maintained 86.7 % adsorption efficiency after 5 cycles, demonstrating excellent recyclability. This study provides a novel approach for preparing high-performance adsorption materials from waste biomass.

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农业固体废弃物-葡萄藤水热炭化制备高性能吸附炭材料

本研究利用葡萄藤农业废弃物，通过水热碳化后用 NaOH 进行化学活化，制备葡萄藤衍生生物基活性炭（AGV）。对 AGV 对亚甲基蓝（MB）的吸附性能和机理进行了全面分析。结果表明，AGV 具有高度发达的网状孔隙结构，比表面积为 3230.57 m2 g-1，并且富含氧官能团（OFG）。在 pH 值为 7.0 的条件下，AGV 在 30 分钟内的去除率达到 90%，最大吸附容量为 661.7 mg g-1，超过了之前报道的大多数活性炭。吸附遵循 Langmuir 等温线和伪秒阶动力学，热力学证实了甲基溴的内热吸附和自发吸附。吸附机理主要涉及化学吸附，包括静电相互作用、孔隙填充、氢键、酸碱相互作用和 π-π 堆积。AGV 在 5 次循环后仍能保持 86.7% 的吸附效率，显示出极佳的可回收性。这项研究为利用废弃生物质制备高性能吸附材料提供了一种新方法。

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来源期刊

Journal of Environmental Management 环境科学-环境科学

CiteScore

13.70

自引率

5.70%

发文量

2477

审稿时长

84 days

期刊介绍： The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.