工业木材染料从水溶液中通过多功能碳素从聚烯酸中提取
Lidia Domínguez-Ramos1,2,3, Ismael Tejado2, M Sonia Freire2
1Center for Research in Biological Chemistry and Molecular Materials (CiQUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
Molecules (Basel, Switzerland)
|August 28, 2025
概括
来自聚烯 (PAN) 的活性炭有效地去除废水中的染料. 活性炭 (PAN-C-Act) 中较大的孔隙增强了染料吸附,达到接近100%的去除效率.
科学领域:
- 环境化学
- 材料科学
- 吸附科学
背景情况:
- 废水中的合成染料会给环境带来危险.
- 聚烯 (PAN) 衍生碳提供了染料修复的潜力.
- 了解结构-吸附关系对于有效治疗至关重要.
研究的目的:
- 研究含有N的碳的结构特征对红色GRA200%染料吸附的影响.
- 评估pH值,吸附剂剂量和染料度对吸附性能的影响.
- 确定吸附动力学和机制.
主要方法:
- 来自PAN前体的N-碳 (PAN-C),活性碳 (PAN-C-Act) 和含硫碳 (PAN-S-C) 的合成.
- 批量吸附实验改变pH值,吸附剂剂量和初始染料度.
- 使用伪二次模型和质量转移模型分析吸附动力学.
主要成果:
- PAN-C-Act具有卓越的吸附性能,可以实现近100%的染料去除.
- 吸附剂中较大的孔隙结构促进了染料分子的可访问性和吸附性.
- 在酸性pH,特定吸收剂剂量和高染料度下观察到最佳吸附.
- 伪二次动力学和组合的外部质量转移/粒子内部扩散控制了这个过程.
结论:
- 来自PAN的活性炭 (PAN-C-Act) 是一种高效的合成染料去除吸附剂.
- 材料的多孔性是影响着染料吸附效率的一个关键因素.
- 吸附条件显著影响着染料的去除,而酸性pH和优化剂量是有利的.
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