使用表面修改的家禽羽毛用于老年多金属水净化:重金属负载生物吸收剂的动力和热力学行为
Muhammad Faisal Irfan1,2, Tariq Siddique1, Aman Ullah2
1Department of Renewable Resources, University of Alberta Edmonton AB T6G 2E3 Canada tariq.siddique@ualberta.ca +1 (780)492 4323 +1 (780) 492 2899.
RSC advances
|July 18, 2025
概括
优化的家禽羽毛有效地从水中去除重金属. 修改后的生物吸收剂还显示了生物能源回收的潜力,增强了其可持续的应用.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 水中的微量金属污染对环境和健康构成重大风险.
- 禽类羽毛 (PF) 是一种丰富,低成本的生物材料,具有生物吸收的潜力.
- 开发高效和可持续的水资源整治方法至关重要.
研究的目的:
- 优化家禽羽毛的表面修饰和生物吸收过程,以去除微量金属.
- 评估使用过的生物吸收剂的热能和能量潜力,以回收生物能源.
- 为了研究耗尽的生物吸收剂的降解动力学.
主要方法:
- 禽类羽毛 (PF) 的两步优化,包括用四水 (THF) 进行表面修饰.
- 使用响应表面方法 (RSM) 来确定最佳预处理和生物吸收条件.
- 用热重力测量分析 (TGA) 和Coats-Redfern分析来评估热特性和降解动力学.
主要成果:
- 最佳条件显著改善了 (Co2+), (Ni2+), (Cd2+) 和 (V5+) 的去除.
- 在最佳条件下观察到 (Cr6+) 和 (As3+) 的去除效率下降.
- 热重力测量分析表明,消耗的生物吸收剂的激活能量更高,这表明热稳定性更强.
- 考茨-雷德费恩分析证实了已耗尽的生物吸收剂的扩散控制的降解动力学.
结论:
- 采用改性家禽羽毛的优化两步工艺,增强了从污染水中去除特定的微量金属的效果.
- 消耗的生物吸收剂具有有利的热能和能量潜力,支持其在生物能源应用中的使用.
- 这种来自家禽羽毛的生物吸收剂的双重功能为水处理和废物利用提供了可持续的解决方案.
相关概念视频
Coagulation
375
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
375
Factors Affecting Solubility
33.9K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.9K
Extraction: Advanced Methods
536
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...
536


