有效和可持续的双胺氨基功能化树脂,用于从水中去除Ag+,Cu2+,Pb2+和Fe3+
Ana-Laura Villa-Reyna1, Milagros Aguilar-Martínez1, Adrián Ochoa-Terán2
1Departamento de Ciencias Químico Biológicas y Agropecuarias, Universidad de Sonora, Avenida Universidad e Irigoyen S/N, Col. E. Ortiz, Caborca 83600, Mexico.
Polymers
|July 14, 2023
概括
化树脂 (CR) 有效地从水中去除重金属酸,如Ag+,Cu2+,Fe3+和Pb2+. 这些可重复使用的吸附剂显示出对多功能水处理应用的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 分析化学 分析化学
背景情况:
- 水中的重金属污染对环境和健康构成重大风险.
- 开发高效的吸附材料对于有效的水资源整治至关重要.
- 合树脂为选择性金属离子去除提供了一个有前途的方法.
研究的目的:
- 合成和评估来自梅里菲尔德树脂 (MR) 和特定配体 (PDA,DPA,AMP) 的合树脂 (CR).
- 评估这些CRs对水中的Ag+,Cu2+,Fe3+和Pb2+离子的吸附能力和选择性.
- 通过批量和流量方法,研究CR在竞争和非竞争条件下的可重复使用性和性能.
主要方法:
- 结合酶树脂的合成:MR-PDA,MR-DPA,以及MR-AMP. 这三种类型的树脂是:
- 使用IR,光和SEM进行树脂的表征.
- 使用批量和流量程序进行吸附研究,以确定吸附能力和亲和力.
- 在多个吸附-脱附周期中评估树脂的可重复使用性.
主要成果:
- 在10次重复使用的情况下,MR-PDA证明了Fe3+的高批量吸附 (29.8 mg/g) 和Ag+的流量吸附 (18.4 mg/g).
- MR-DPA显示了Ag+ (9.1 mg/g) 的批量吸附和Cu2+ (2.2 mg/g) 的流量吸附,5次重复使用.
- 在MR-AMP中显示了Ag+ (17.1 mg/g) 的批量吸附和Fe3+ (4.3 mg/g) 的流量吸附,有3次重复使用.
- 所有合成的CRs都显示出在从水中去除子的多功能性.
结论:
- 合成的合树脂 (MR-PDA,MR-DPA,MR-AMP) 是有效的吸附剂,可以从水溶液中去除Ag+,Cu2+,Fe3+和Pb2+.
- 这些可重复使用的CR显示出在水处理和重金属修复中实际应用的潜力.
- 结合物的选择影响了树脂对特定金属的亲和力和吸附能力.
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