通过农业固体废物的水热碳化制备高性能吸附碳材料-葡萄藤
Kun Wang1, Yulu Yang1, Chang Liu1
1Shaanxi Key Laboratory of Energy Chemical Process Intensification, School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
Journal of environmental management
|April 23, 2025
概括
葡萄酒农业废物被转化为高度多孔的活性炭 (AGV),以有效地去除甲蓝 (MB). 这种可持续吸附剂表现出卓越的性能和可回收性,为废水处理提供了新的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 农业废弃物,如葡萄藤生物质,代表着一个重要的处置挑战.
- 将废弃物生物质价值化为功能材料对于可持续发展至关重要.
- 活性炭是用于净化水的广泛使用的吸附剂,但需要具有成本效益和高性能的替代品.
研究的目的:
- 从农业废物中制备葡萄藤衍生生物基活性炭 (AGV).
- 研究AGV的吸附性能和去除甲基蓝 (MB) 的机制.
- 评估AGV作为可持续吸附剂的可回收性和潜力.
主要方法:
- 葡萄酒废物的水热碳化,然后用NaOH进行化学激活.
- 活性炭的孔隙结构,特定表面积和氧功能组 (OFG) 的表征.
- 甲蓝吸附实验,以确定去除速度,吸附能力,动力学和异温模型.
主要成果:
- AGV的特异面积很大 (3230.57 m2 g-1),并且有大量的OFGs.
- 在pH 7.0下,在30分钟内达到90%的MB去除,最大吸附能力为661.7mgg-1.1.
- 吸附跟随兰格穆尔等温和和伪二次动力学,表明化学吸附,并显示出良好的可回收性 (86.7%在5个循环后).
结论:
- 葡萄藤衍生活性炭 (AGV) 是一种高效且可回收的吸附剂,用于去除甲蓝.
- 该制备方法为将农业废物转化为高价值材料提供了一个可持续的途径.
- AGV显示了废水处理中的工业应用的巨大潜力.
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