通过氨基化燃气化渣对甲蓝和Cr (VI) 的协同去除
Hua Wang1,2, Yunxuan Luoyang1, Xia Li1
1College of Chemistry and Chemical Engineering, Yulin University, Yulin City, China.
Annals of the New York Academy of Sciences
|December 16, 2025
概括
本研究介绍了一种低能耗的方法,用煤气化细渣 (CGFS) 来制造高效的吸附剂. 由此产生的材料有效地从废水中去除甲蓝 (MB) 和 (VI),提供可持续的工业废物解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 煤气化细渣 (CGFS) 具有适合吸附剂的多孔结构.
- 传统的CGFS激活方法耗费大量能源,并产生二氧化碳.
- 开发CGFS的低能耗激活方法对于可持续应用至关重要.
研究的目的:
- 开发一种低能耗的三步制备方法,从CGFS中制备一种胺基修饰的双功能吸附剂.
- 为了评估合成吸附剂 (CSM-T5%) 对甲基蓝 (MB) 和CrVI的吸附性能.
- 研究吸附剂的吸附机制和可重复使用性,在单一和二进制系统中.
主要方法:
- 在CGFS的水热酸浸出.
- 浸出材料的轻微性处理.
- 乙烯胺 (T5%) 功能化以创建CSM-T5%吸附剂.
- 用MB和Cr (VI) 在单溶液和二元溶液中进行吸附实验.
- 吸附-脱附循环用于可重复使用性评估.
- 机理学研究包括吸附途径分析.
主要成果:
- CSM-T5%实现了高单溶液吸附能力:MB为862.06毫克/克,Cr为233.10毫克/克.
- 由于协同效应,二元系统容量提高到MB的1206.27 mg/g和Cr (VI) 的243.90 mg/g.
- 吸附剂在五个循环后保持了显著的去除效率 (71.37%的MB,63.68%的CrVI)).
- 的去除涉及吸附和现场减少;MB的去除是由静电吸引,结合/π定和孔隙封闭驱动的.
结论:
- 一种可持续的低能耗方法有效地将CGFS转化为高性能双功能吸附剂.
- CSM-T5%证明了在废水中去除MB和Cr6的卓越效率和可重复使用性.
- 这种方法提供了一种具有成本效益的策略,用于将工业废物转化为可用于环境修复的有价值材料.
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