三维,多功能纳米纤维素/酸盐水凝,用于高效和选择性酸盐清理:优化,性能和深入的机制
Shenghao Zhang1, Xingyu Yuan2, Mingtao Li2
1Guangdong-Hong Kong Joint Laboratory for Water Security, Beijing Normal University, Zhuhai 519087, China; Center for Water Research, Advanced Institute of Natural Sciences, Beijing Normal University, Zhuhai 519087, China; School of Metallurgical Engineering, Anhui University of Technology, Maanshan 243032, Anhui, China.
International journal of biological macromolecules
|December 19, 2024
概括
一种新的功能化纳米纤维素/酸水凝 (La-NCF/SA-PEI) 提供了卓越的酸盐吸附. 这种可持续的吸附剂具有高容量和选择性,可有效地进行水资源整治.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 酸盐污染给环境带来了挑战.
- 开发高效和有选择性的吸附剂来去除酸盐至关重要.
- 现有的吸附剂往往缺乏足够的容量,选择性或再生能力.
研究的目的:
- 开发一种多功能,高容量的纳米纤维素/酸水凝,用于酸盐吸附.
- 研究新型水凝的吸附机制和性能.
- 评估水凝对酸盐污染水的修复潜力.
主要方法:
- 使用环保方法制备功能化纳米纤维素/酸水凝 (La-NCF/SA-PEI).
- 描述水凝的结构和功能组.
- 酸盐吸附实验以确定容量,动力学和异热量.
- 使用仪器技术和密度功能理论 (DFT) 计算分析吸附机制.
主要成果:
- 拉-NCF/SA-PEI水凝的最大酸盐吸附能力为78.0 mg/g.
- 吸附是在多层化学吸附过程之后发生的,由动力学和异热学研究证实.
- DFT计算揭示了涉及酸和酸复合物的占主导地位的吸附机制.
- 水凝在市政污水和水产养殖尾水中对酸盐具有很高的选择性.
结论:
- 拉-NCF/SA-PEI水凝是一种高效的吸附剂,用于去除酸盐.
- 它的多功能结构和环保设计提供了显著的优势.
- 水凝显示了可持续和高效的酸盐污染水治理的巨大潜力.
- 这项工作推进了用于环境应用的生物质吸附剂的设计.
相关概念视频
01:18Detergent Purification of Membrane Proteins
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
01:15Dialysis
Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
01:17Ion Exchange
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
01:30Capillary Electrophoresis: Applications
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
01:30Micelles
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...