用酸处理的蓝焦炭活性炭的结构特征及其在六价含废水处理中的应用
Wencheng Wang1, Hua Wang1,2, Yunxuan Luoyang1
1College of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, China.
Molecules (Basel, Switzerland)
|December 23, 2023
概括
研究人员将蓝色焦粉转化为六价 (Cr (VI)) 废水处理的有效吸附剂. 改性材料LCN显示出优越的Cr (VI) 去除能力和可重复使用的稳定性.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理 处理水的方法
背景情况:
- 六价 (Cr (VI)) 在废水中构成严重的环境危害.
- 蓝焦粉是一种丰富的,低成本的材料,具有吸附剂开发的潜力.
- 有效地利用诸如蓝焦粉之类的工业副产品对于可持续性至关重要.
研究的目的:
- 从蓝色焦粉中开发一种高容量的吸附剂,用于去除Cr (VI).
- 研究用酸处理的蓝焦炭材料 (LCN) 的结构变化和吸附性能.
- 评估LCN在处理受Cr (VI) 污染的废水中的效率和可重复使用性.
主要方法:
- 采用两步制造工艺,制造出用酸改性蓝焦材料 (LCN).
- 进行了LCN结构的表征,包括特定表面积和孔径体积.
- 进行了吸附实验,以确定Cr (VI) 的结合能力和评估去除机制.
主要成果:
- 与氧化处理材料 (LCK) 相比,LCN的特定表面积和孔积显著增加.
- 发现LCN表面的功能组对Cr (VI) 吸附更有利.
- 在318K的温度下,LCN的最大Cr (VI) 吸附能力为181.962 mg/g,主要是通过涉及氧化还原反应的化学吸附.
结论:
- 酸修饰增强了蓝色焦粉的吸附性质,用于去除Cr (VI).
- 由LCN进行的Cr (VI) 吸附过程是自发的,外热的,并增加了.
- 液显示出出色的稳定性和可重复使用性,使其成为工业废水处理的有希望的吸附剂.
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