调查酸性微生物群体适应增强生物溶解的适应性,从高密度的碎碎的废弃液晶面板
Andra Constantin1, Fatemeh Pourhossein1, Daniel Ray1
1Research Centre for Health & Life Sciences, Coventry University, CV1 5FB, UK.
Journal of environmental management
|July 3, 2024
概括
本研究使用适应的微生物群落从电子废弃物液晶显示器 (LCD) 探讨生物溶解. 优化的工艺实现了高提取效率,证明了从电子废物中回收有价值金属的潜力.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
背景情况:
- 废弃的液晶显示器 (LCD) 是电子废物 (电子废物) 的重要组成部分,含有有价值和危险金属.
- 从液晶显示器中回收呈现出经济机遇和环境挑战.
- 生物炼为从复杂的废物流中提取金属提供了一种可持续的方法.
研究的目的:
- 研究从破碎 (Sh-LCD) 和粉碎 (P-LCD) 电子废物中生物溶解.
- 通过酸性微生物联盟和不同的代谢途径,探索生物溶解的机制.
- 评估适应性与非适应性微生物群落在回收中的效率.
主要方法:
- 利用含硫铁和硫混合途径的酸性微生物联合体进行生物化.
- 在高密度下研究了切碎和粉末液晶材料的生物溶解.
- 在适应的联盟中使用条纹涂层来识别主导微生物物种.
主要成果:
- 混合硫铁通路实现了高生物溶解效率:Sh-LCDs的约60%和P-LCDs的约100%.
- 的提取涉及酸解,复合解和还原解机制.
- 适应的微生物群体与未适应的微生物群体相比 (最大29%) 显示出明显更高的浸出效率 (高达50%).
结论:
- 铁离子是有效的氧化剂,用于从液晶显示器中生物溶解.
- 微生物社区的合作提高了提取效率.
- 适应的微生物群落,具有增强的代谢活动和耐受性,在电子废物中的回收方面优越,生物膜形成起着保护作用.
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