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从水溶液中深度清理水晶紫色和甲蓝色染料,使用基于德克斯的冷凝吸附剂

Maria Marinela Lazar¹, Roxana P Damaschin², Irina Volf²

¹"Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania.

Gels (Basel, Switzerland)

|September 27, 2024

概括

这项研究开发了新的基于德克斯的冷凝,其中包含杉树皮聚,以有效地从水中去除水晶紫色和甲蓝色染料. 这些可再生吸附剂在环境修复应用中显示出有前途的潜力.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
聚合物化学聚合物化学

背景情况:

像德克斯 (Dx) 这样的多糖是低成本的,可再生的吸附剂,具有去除污染物的潜力.
德克斯的应用范围可以通过修改其结构和特性来扩大.
开发可持续吸附剂对于环境保护和水处理至关重要.

研究的目的:

为了研究基于德克斯的冷凝与杉树皮聚醇 (DxPF) 的有效性,以从水溶液中去除水晶紫色 (CV) 和甲蓝色 (MB) 染料.
与德克斯冷凝和多提取物相比,对DxPF冷凝的结构变化和吸性能进行表征.
阐明主导的吸附机制,控制着被开发的吸附剂去除染料.

主要方法:

通过冷解制备德克斯 (Dx) 和德克斯多 (DxPF) 冰凝.
批量实验用于评估染料去除效率和吸附能力.
分析冷凝的特性 (多孔性,毛孔大小,胀) 和染料与吸附剂的相互作用.
应用异热 (兰慕尔,弗洛因德利希,西普斯,D-R) 和动力 (PFO,PSO,埃洛维奇,IPD) 模型来确定吸附机制.

主要成果:

将多 (PF) 纳入德克斯 (Dx) 冰凝,可降低多孔性,毛孔大小和胀率.
与Dx冷凝和PF提取物相比,DxPF冷凝对CV和MB具有显著更高的吸附能力.
性能最高的DxPF冷凝 (DxPF2) 实现了CV的1.2779 ± 0.0703 mmol·g−1和MB的0.3238 ± 0.0121 mmol·g−1的吸附能力.
吸附数据最适合Sips等温和和伪二次 (PSO) 动力模型,表明化学吸附.

结论:

嵌入杉树皮聚的德克斯基冷凝是有效的和可再生的吸附剂,用于去除CV和MB染料.
开发的DxPF冷凝表现出比单个组件更优异的性能,突出了协同效应.
染料分子与冷凝基质之间的强烈相互作用驱动的化学吸收是染料去除的主要机制.

关键词:

吸附剂吸附剂是一种吸附剂.冰冷凝是一种冷凝.德克斯兰 (Dextran) 是一种染料的去除染料的去除聚醇是一种多醇.

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