塑料废物的再循环转化为多壁碳纳米管,作为高效的有机染料吸收剂
Gordana Bogoeva-Gaceva1, Meri Sokolovska2, Viktor Stefov3
1. gordana@tmf.ukim.edu.mk.
Acta chimica Slovenica
|March 20, 2025
概括
这项研究表明,从塑料废物中制成的多壁碳纳米管 (MWCNT) 能够有效地从水中去除反应性染料. 合成的MWCNT显示出高吸附能力和快速去除率,为净化水提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 工业废水通常含有持久性有机染料.
- 有效和可持续的染料去除方法对于环境保护至关重要.
- 多壁碳纳米管 (MWCNTs) 由于其高表面积,可以作为吸附剂.
研究的目的:
- 从低密度聚乙烯废物中合成多壁碳纳米管 (MWCNTs).
- 评估这些合成的MWCNTs在从水中去除反应性染料方面的有效性.
- 为了确定特定染料的MWCNT的吸附能力和动力学.
主要方法:
- 低密度聚乙烯废物的热解以产生MWCNTs.
- 使用Bezaktiv Blau HE-RM (BB) 和Bezaktiv Rot S-3B (BR) 反应性染料进行批量吸附实验.
- 在不同的染料度 (30-60毫克L-1),固定的MWCNT剂量 (200毫克L-1),pH3和温度 (~25°C) 进行的吸附研究.
- 使用朗格穆尔和弗洛因利希模型分析吸附等热体.
主要成果:
- 合成的MWCNT的表面积为100 m2g-1.
- 获得了高吸附能力:BB为257毫克g-1,BR为213毫克g-1.
- 观察到快速去除染料,在10-15分钟内达到80-90%,在40-60分钟内达到平衡.
- 与弗洛伊德利希模型相比,兰慕尔模型为吸附数据提供了更好的匹配.
结论:
- 从塑料废物中生产的MWCNT是一种可行的,有效的对反应性染料的吸附剂.
- 合成材料的性能与商业MWCNT和功能化吸附剂相美.
- 快速吸附动力学和高容量突出了废水处理中的实际应用潜力.
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