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从使用过的液晶屏幕上选择性地出,通过 siderophore desferrioxamine E

Kun Zheng¹, Marc F Benedetti¹, Rohan Jain²

¹Université Paris Cité, Institut de Physique du Globe de Paris, CNRS, F-75005 Paris, France.

Journal of hazardous materials

|March 24, 2024

概括

研究人员开发了一种新方法,利用微生物合剂desferrioxamine E (DFOE) 来从废弃的液晶屏幕中回收 (In). 这个过程选择性地出,为这个关键的高科技金属提供了一个可持续的来源.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
生物技术是生物技术.

背景情况:

(In) 对高科技应用至关重要,但其主要来源有限.
使用过的液晶屏幕含有大量的,是可行的二次资源.
需要有效和有选择的从电子废物中回收的回收方法.

研究的目的:

开发一种创新的技术,用于从使用过的液晶屏幕中选择性地出.
为了利用微生物合剂,desferrioxamine E (DFOE),用于回收.
优化泄漏条件以最大限度地提高的产量,并最大限度地减少其他元素的干扰.

主要方法:

使用过的液晶屏幕经过了预处理,以获得富含的玻璃状部分.
在优化条件下 (pH5.5,1 g/L S/L 比率,25°C) 使用desferrioxamine E (DFOE) 进行了对的选择性浸出.
由于与 (Al) 的竞争,在低DFOE度下观察到以In(OH) 3形式的沉.

主要成果:

在优化条件下 (0-36μM分量大小,5mM DFOE) 在90天内实现了32%的浸出产量.
的泄漏产量是的十倍.
这项研究是首次使用 siderophore 来从复杂的电子废物中选择性地出.

结论:

使用DFOE从使用过的液晶屏幕中选择性地出是可行的和高效的.
优化漏时间,选择性和最小化干扰是高回收的关键.
产生的富含的液可以进一步加工用于炼,证明了循环经济的方法.

关键词:

竞争竞争竞争竞争建模建模模型是什么最佳条件是最佳的条件.选择性冲洗是一种选择性的冲洗.废弃物液晶显示器的使用

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