优化化结晶过程,用于处理含的高度半导体 工业 废水 废水
Arindam Sinharoy1, Ga-Young Lee1, Chong-Min Chung1
1Department of Environmental Science & Biotechnology, Jeonju University, Jeonju 55069, Republic of Korea.
International journal of molecular sciences
|April 13, 2024
概括
这项研究证明了高效的化物去除和高纯度化 (CaF) 晶体从半导体废水回收使用流化床反应器 (FBR). 确定了有效的离子去除和CaF结晶的最佳条件.
科学领域:
- 环境工程 环境工程
- 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:
- 半导体行业的废水通常含有高度的化物离子.
- 有效地去除和回收化物对于环境保护和资源利用至关重要.
- 传统方法可能会面临高度化物流的挑战.
研究的目的:
- 研究使用流化床反应堆 (FBR) 来从模拟的半导体废水中去除化物.
- 从经过处理的废水中回收高纯度化 (CaF) 晶体.
- 为了优化流程参数,以有效地去除化物和CaF2结晶.
主要方法:
- 实验室规模的批量实验进行,以研究液压保留时间 (HRT),pH,Ca2+到F比率,上流速度,种子大小和种子床高度的影响.
- 使用响应表面方法 (RSM) 来分析关键过程参数的相互作用.
- 用能量分散式X射线 (SEM-EDX) 扫描电子显微镜,富里埃变换红外光谱 (FTIR) 和高分辨率X射线衍射 (HR-XRD) 用于材料表征.
主要成果:
- 化物去除和CaF2结晶的最佳条件被确定为5小时HRT,pH值为6,种子高度为50厘米,[Ca2+]/[F-]比为0.55.
- 所有个别的工艺参数都显著影响了化物去除 (p = 0.0001).
- SEM-EDX,FTIR和HR-XRD分析证实了具有特有的晶体结构的高纯度CaF2晶体的形成.
结论:
- 基于种子材料的流化床反应器 (FBR) 是一种可行的技术,可以有效地去除化物.
- 该FBR系统可以回收高纯度化 (CaF) 晶体.
- 该研究为优化工业废水处理FBR运行提供了宝贵的见解.
更多相关视频
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
12.4K
09:15Light Enhanced Hydrofluoric Acid Passivation: A Sensitive Technique for Detecting Bulk Silicon Defects
Published on: January 4, 2016
9.3K
相关概念视频
Factors Affecting Solubility
36.4K
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:
36.4K
Solubility Equilibria: Overview
1.3K
When a substance such as sodium chloride is added to water, it dissolves, forming an aqueous solution. The extent of dissolution is called solubility. The process of dissolution can exist in equilibrium, just like other chemical processes. Solubility equilibria are also called precipitation equilibria because the process of solubility can be reversible. The reverse of the solubility process is called precipitation.
Solubility is important in biological and environmental processes. A notable...
Solubility is important in biological and environmental processes. A notable...
1.3K
