价值化丰富的固体废物,使其成为用于重金属清除的高活性酸盐吸附剂
Shaojun Jiang1, Xurong Huang1, Huayi Chen2
1Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Toxics
|December 24, 2025
概括
这项研究将废石粉转化为基于的材料 (SSM),使用活性-化. 这些SSM有效地固定了诸如之类的重金属,并通过各种机制引导,提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 废物管理 废物管理
背景情况:
- 废石粉是石材加工过程中的重要固体废物副产品.
- 开发将这些废物转化为有价值的材料的方法对于可持续性至关重要.
研究的目的:
- 开发一种新的活性化工艺,将废石粉转化为基于的材料 (SSM).
- 调查SSM内的活性的形成机制.
- 评估SSM在固定重金属,如和的有效性.
主要方法:
- 使用一种性激活-化工艺,具有不同的参数 (温度,激活剂度,持续时间).
- 采用批量吸附实验和多技术表征来分析SSM特性和吸附机制.
- 研究重金属固定,使用诸如脱吸实验和表面分析等技术.
主要成果:
- 在优化条件下,SSM产生了24.30%的活性含量.
- SSM 显示出高吸附能力:57.40 mg/g 的和496 mg/g 的.
- 吸附机制包括静电相互作用,复杂化,沉和协调,而离子交换起的作用很小.
结论:
- 活性化工艺有效地将废石粉利用为高性能重金属吸附剂.
- 在SSM中的反应性含量和功能组是有效重金属固定的关键.
- 需要进一步的研究来应对SSM在实践和大规模应用方面的挑战.
相关概念视频
Sample Preparation for Analysis: Advanced Techniques
1.9K
Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
Acid digestion with strong acids is commonly used to dissolve inorganic materials that are insoluble (do not dissolve) in water. This method can be useful for...
1.9K
Microbial Bioremediation of Uranium
103
Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella,...
103
Microbial Leaching
227
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
227


