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同时去除多种金属化物和中和酸性矿井排水,使用3D打印的石含地质聚合物

Nuno P F Gonçalves¹, Eduardo Ferreira da Silva², Luís A C Tarelho³

¹Department of Chemistry/CICECO-Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.

Journal of hazardous materials

|October 16, 2023

概括

由危险废物红泥制成的高度多孔的3D打印 sorbents,有效地修复酸性矿井排水 (AMD). 这些吸附剂同时去除多种金属和可再生的重复使用,提供可持续的解决方案.

科学领域:

环境科学环境科学
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.

背景情况:

采矿行业引发了重大的环境问题,特别是酸性矿井排水 (AMD).
红色的泥,生产中的危险废物,提出了处置挑战.
制定有效和可持续的AMD整治策略至关重要.

研究的目的:

调查使用3D打印的红色泥基吸附剂用于AMD修复.
评估吸附剂在合成和真实AMD中同时去除关键金属的能力.
评估吸附剂的可重复使用性和涉及整治的机制.

主要方法:

制造具有高度多孔性的3D打印吸附剂,其中含有50%的红泥.
在合成废水中对Cu (II),Ni (II),Zn (II),Cd (II) 和As (V) 的吸收能力的评估.
优化参数,包括初始度,pH值和接触时间.
在真实AMD样本上测试吸附剂的性能,并评估再生周期.

主要成果:

在优化条件下 (pH 4,50 mg L−1,24 h) 吸附剂可以实现高去除效率 (64-98%) 的目标金属化物.
在真实AMD水样中证明了金属化物有效的修复.
3D打印的格子成功地再生并重复使用了多达五个周期,没有性能损失.

结论:

3D打印的红色泥吸附剂为AMD修复提供了一个有希望的,可持续的解决方案.
这种方法利用危险的工业废物,将其转化为功能性材料.
该研究强调了采矿相关污染在环境管理中广泛应用的潜力.

关键词:

酸矿井排水系统酸矿井排水系统吸附方式吸附方式吸附方式直接使用墨水写作.无机聚合物的无机聚合物红色的泥是红色的泥.

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