酸功能化奇托桑水凝珠,用于可持续和持续的回收
Zhifang Lv1, Mengyang Ma1, Yanan Huang1
1Zhongyuan Critical Metals Laboratory (Zhengzhou University), School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China.
International journal of biological macromolecules
|August 15, 2025
概括
一种新的酸盐凝珠吸收剂 (CSQ-HA) 有效地回收 (Ga),这是一个关键金属. 这种可持续的方法提供了高容量和可重复使用性,优于关键金属分离的传统技术.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- (Ga) 是半导体和可再生能源至关重要的关键金属,面临着日益增长的需求和有限的供应.
- 传统的Ga回收方法昂贵,对环境有害,并且难以回收.
- 需要可持续和高效的回收方法.
研究的目的:
- 开发和描述一种新的生物基吸收剂,用于可持续的回收.
- 评估新型吸附剂对Ga(III) 离子的吸附性能.
- 评估开发的吸附剂的可重复使用性和扩展潜力.
主要方法:
- 将4-基基酸移植到奇托上,以创建CSQ-HA水凝珠.
- 吸附剂的形态,表面积和热稳定性的表征.
- 批量和固定床柱吸附实验,以确定Ga(III) 吸收能力,动力学和异热量.
主要成果:
- 在pH值为4.0的情况下,CSQ-HA具有高的95.12 mg/g的高Ga(III) 吸收能力.
- 吸附遵循伪二次动力学,并适应兰迈尔/弗朗德利希等热量,表明混合机制.
- 吸附剂在5个再生周期后保持了80%以上的容量,显示出出色的可重复使用性.
结论:
- CSQ-HA是一种新型,可生物降解的吸附剂,具有高亲和力和对Ga(III) 恢复的能力.
- 水凝珠形态适用于动态列吸附,比传统方法具有优势.
- CSQ-HA为关键金属分离和回收提供了强大,可持续和可扩展的解决方案.
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