烟气诱导的碳酸盐结晶来自工业黑质量的黑质量
Bhaskar Joshi1, Seniz Ucar2, Hanna Katariina Knuutila3
1Particle Engineering Centre, Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway.
Journal of hazardous materials
|August 14, 2025
概括
本研究提出了一种利用二氧化碳混合物从废旧电池中回收高纯度碳酸的新方法,避免了传统工艺中常见的污染.
科学领域:
- 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.
- 环境科学 环境科学
背景情况:
- 使用过的离子电池 (LIB) 是包括在内的重要价值材料的重要来源.
- 传统的回收方法往往会导致污染,降低最终碳酸产品的纯度.
- 来自LIBs的工业黑质量 (BM) 需要高效和纯回收技术.
研究的目的:
- 开发一种用于从工业黑质量 (BM) 中回收高纯度碳酸 (Li2CO3) 的新工艺.
- 解决和消除传统回收方法中普遍存在的污染问题.
- 通过使用二氧化碳混合物进行气液反应性结晶来优化回收.
主要方法:
- 从工业黑质中选择性地用水出.
- 使用合成氧化 (LiOH) 与二氧化碳混合物注射的Li2CO3结晶的演示.
- 在现场集中光束反射度测量 (FBRM) 监测Li2CO3溶解.
- 气液反应性结晶,用于从缩液中回收Li2CO3.
主要成果:
- 在高反应温度和精确的pH控制下实现了最佳的回收,接近pH最大值.
- 在现场的FBRM证实了过量二氧化碳注入过程中的Li2CO3溶解,表明了过程动态.
- 高纯度的Li2CO3超过99.8%已成功从缩水溶液中回收.
- 新的二氧化碳混合工艺有效缓解了污染问题.
结论:
- 开发的二氧化碳混合气-液态反应结晶是一种有效的方法,用于从已耗尽的LIB中回收高纯度碳酸.
- 这个过程克服了与传统碳酸方法相关的污染的局限性.
- 这些发现支持从使用终止的电池中回收资源的可持续循环利用,增强资源循环.
更多相关视频
06:561,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions
Published on: October 10, 2016
7.8K
11:14Two-way Valorization of Blast Furnace Slag: Synthesis of Precipitated Calcium Carbonate and Zeolitic Heavy Metal Adsorbent
Published on: February 21, 2017
12.5K
相关概念视频
Washing, Drying, and Ignition of Precipitates
1.1K
After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
1.1K
Sample Preparation for Analysis: Advanced Techniques
451
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
451
Qualitative Analysis
22.6K
For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...
For instance, group IV...
22.6K
