机械和化学坚固的兰莫杜林功能化的丝海绵用于稀土元素封存.
Logan D Morton1, Ryan A Scheel1, Jugal Kishore Sahoo1
1Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States.
ACS biomaterials science & engineering
|June 25, 2025
概括
本研究介绍了一种可持续的方法,用于从电子垃圾中提取稀土元素 (REE),使用丝蛋白海绵. 这种新的方法提供了选择性的REE结合和回收,促进环保回收.
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:
- 稀土元素 (REEs) 对现代技术至关重要,但它们的供应受到不可持续的采矿做法和不断增长的需求的威胁.
- 电子废物 (E-waste) 是一个重要的,但在很大程度上尚未开发的,低质量的有价值的REEs来源.
- 传统的REE提取方法往往涉及强化学品,并产生大量的环境污染.
研究的目的:
- 开发一种环境友好和高度选择性的方法,从低质量的来源提取稀土元素 (REEs).
- 为了利用功能化的丝蛋白海绵来有效地捕获和回收REE.
- 允许从电子废物 (电子废物) 和工业副产品中回收 REE.
主要方法:
- 用兰莫杜林 (LanM) 功能化的丝蛋白海绵的制造,兰莫杜林 (LanM) 是一种对 REEs 具有高度亲和力的蛋白质.
- 将LanM固定在海绵矩阵上,以创建可重复使用的提取材料.
- 功能化海绵的应用用于从水溶液中选择性结合可再生能源.
- 通过简单的酸液和海绵重复使用性的证明来回收结合的REEs.
- 针对选择性回收不同REEs的pH依赖性脱吸的研究.
主要成果:
- 具有 LanM 功能的丝海绵展示了易于制造和可扩展性.
- 从解决方案中结合REEs的高选择性和效率得到了实现.
- 在多个循环中,通过酸浸出成功地回收REEs,海绵功能损失最小.
- 通过调整缓冲 pH,证明了不同 REE 的选择性脱离潜力.
- 该方法有效地避免了常规提取中常见的危险溶剂的使用.
结论:
- 兰莫杜林功能化的丝蛋白海绵为稀土元素提取提供了一个可持续,高效和选择性的平台.
- 这种以生物为灵感的方法为传统采矿提供了可行的替代方案,使可再生能源从电子废物和工业来源回收成为可能.
- 可调节pH的脱吸能力允许定制回收特定的REEs,提高了该过程的经济可行性.
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