从水溶液中回收的兰改性天然原料的价值化:静态和动态调查
Hamed Al-Nadabi1, Salah Jellali1, Wissem Hamdi2
1Center for Environmental Studies and Research, Sultan Qaboos University, Al-Khoud 123, Muscat P.O. Box 17, Oman.
Materials (Basel, Switzerland)
|July 30, 2025
概括
兰改性磁铁石有效地从废水中回收. 这种新材料在批量和连续系统中显示出高吸附能力,为回收提供了一个有希望的解决方案.
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:
- 从废水中回收对于资源管理和污染控制至关重要.
- 天然磁铁是一种低成本的矿物质,可以改造以提高吸附性能.
- 兰修饰提供了改善结合的潜力.
研究的目的:
- 研究回收中改性天然磁铁 (La-MM) 的功效.
- 评估静态 (批量) 和动态 (CSTR) 废水处理系统中的La-MM性能.
- 描述La-MM材料并了解回收机制.
主要方法:
- 使用表面积,孔积和表面化学分析对天然磁铁和La-MM进行表征.
- 在各种条件下进行批量吸附实验,以确定的吸附能力.
- 连续动反应堆 (CSTR) 实验模拟动态废水处理.
- 对回收机制的分析,包括静电吸引,复合和沉.
主要成果:
- 与天然磁铁石相比,La-MM的表面积 (82.7 m2 g-1) 和孔积 (0.160 cm3 g-1) 显著增加.
- 高吸附能力为50.7毫克g-1在批量模式从合成废水.
- 从实际废水中有效回收,吸附能力为47.3毫克g-1.1.
- 由于接触时间有限,在CSTR模式下减少回收 (33.8 mg 合成g-1,10.2 mg 实际g-1).
结论:
- 兰改性天然磁铁是从水溶液中回收的高效材料.
- 与许多用于吸附的工程材料相比,La-MM表现出卓越的性能.
- 这种材料在废水处理中对回收具有实际应用的前景,特别是在批处理过程中.
相关概念视频
01:21The Phosphorus Cycle
38.8K
Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
38.8K
01:14Photoluminescence: Applications
487
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
487
04:01Factors 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