通过基维树皮基生物吸收剂有效和有选择地吸附阳离子染料马拉绿色
Yanjun Zhao1, Xintong Liu2, Wenhui Li1
1School of Chemistry and Biological Engineering, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing 100083, China.
Molecules (Basel, Switzerland)
|July 29, 2023
概括
修改过的皮有效地从废水中去除了阴阳性染料. 酸处理提高了吸附能力和选择性,为染料去除提供了一个环保的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 吸附科学 吸附科学
背景情况:
- 工业废水往往含有有毒的阴离子染料,需要有效的去除方法.
- 农业废物,如皮,是吸附材料的可持续来源.
- 化学修饰可以增强生物质衍生材料的吸附性质.
研究的目的:
- 开发和评估基维树皮基的吸附剂,用于选择性去除阴阳性染料.
- 为了研究酸修饰对吸附剂性能的影响.
- 探索吸附机制和热力学可行性.
主要方法:
- 准备和描述原始的皮 (KP) 和用酸修饰的皮 (NA-KP).
- 使用马拉绿 (MG) 作为染剂的吸附实验.
- 对阳离子染料甲基色 (MO) 的吸附动力学,异热,热力学和选择性的分析.
主要成果:
- 与KP (297.15 mg g-1) 相比,NA-KP具有显著更高的吸附能力 (580.61 mg g-1).
- 吸附遵循了NA-KP的伪第一阶动力学和弗洛伊德利希等热量,表明复杂的吸附机制.
- NA-KP对MG的选择性优于MO,分离因子是KP的5.93倍.
结论:
- 酸修饰增强了皮的效率和选择性,用于去除酸染料.
- NA-KP是一种有前途,低成本和环保的吸附剂,用于处理染料污染的废水.
- 结合,π-π相互作用和静电相互作用是NA-KP对MG吸附的关键机制.
更多相关视频
09:43Study of Short Peptide Adsorption on Solution Dispersed Inorganic Nanoparticles Using Depletion Method
Published on: April 11, 2020
6.6K
07:28An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter
Published on: July 13, 2018
7.5K
相关概念视频
00:56Extraction: Advanced Methods
487
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
487
01:09Ion-Exchange Chromatography
584
Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
584