制备环保合树脂及其在水处理中的应用
Nicoleta Mirela Marin1,2, Georgiana Dolete2,3, Ludmila Motelica3
1National Research and Development Institute for Industrial Ecology ECOIND, Street Podu Dambovitei no. 57-73, District 6, 060652 Bucharest, Romania.
Polymers
|May 27, 2023
概括
两种新的合树脂,IRA 402/TAR和IRA 402/AB 10B,被开发用于同时从酸性废水中去除有毒金属离子. 这些树脂具有出色的稳定性和高吸附能力,为废水处理提供了有前途的解决方案.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 工业废水通常含有有毒金属离子的混合物.
- 有效地去除这些金属离子对于环境保护和资源回收至关重要.
- 开发稳定高效的吸附材料对于废水处理至关重要.
研究的目的:
- 为了合成和表征两个新型合树脂,IRA 402/TAR和IRA 402/AB 10B.
- 评估这些树脂的吸附性能,同时去除多个有毒金属离子 (Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb).
- 评估这些树脂在循环经济框架内的废水处理中的稳定性和潜在应用.
主要方法:
- 通过将 styrene-divinylbenzene树脂 (Amberlite IRA 402) 与tartrazine (TAR) 和amido黑10B (AB 10B) 功能化而制备合树脂.
- 评估关键吸附参数,包括接触时间,pH值,初始度和在各种条件下树脂稳定性 (2M HCl,2M NaOH,EtOH和混合溶液).
- 在复杂的酸性废水上进行吸附研究,用于金属离子量化和热重力分析 (TG),里埃转换红外光谱 (FTIR) 和扫描电子显微镜 (SEM) 进行表征,使用诱导合等离子质谱法 (ICP-MS).
主要成果:
- 无论是IRA 402/TAR还是IRA 402/AB 10B树脂,都在2M HCl,2M NaOH和乙醇中表现出极好的稳定性,在混合酸乙醇介质中稳定性略有降低,IRA 402/TAR更为明显.
- 与IRA 402/TAR相比,IRA 402/AB 10B树脂对测试的金属离子具有更高的吸附能力.
- 对于IRA 402/AB 10B的亲和系数是Fe3+ > Ni2+ > Cd2+ > Cu2+ > Cr3+ > Pb2+ > Mn2+ > Co2+ > Zn2+,而对于IRA 402/TAR则是Fe3+ > Ni2+ > Cd2+ > Cr3+ > Pb2+ > Cu2+ > Mn2+ > Co2+ > Zn2+.
结论:
- 合成的合树脂显示出从酸性水溶液中同时吸附一系列有毒金属离子的巨大潜力.
- 在吸附能力方面,IRA 402/AB 10B树脂表现出卓越的性能.
- 这些发现支持这些新型合树脂在有效的废水处理中应用,与循环经济原则保持一致.
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