顺序萃取法研究地聚合工业废弃物中重金属的包封性

IF 2.1 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
JOM Pub Date : 2024-12-20 DOI:10.1007/s11837-024-07049-5
Lyudmila Angelova, Dumitru Doru Burduhos-Nergis, Andriana Surleva, Andrei Victor Sandu, Darya Ilieva, Georgi Chernev, Petrica Vizureanu
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引用次数: 0

摘要

工业废物的增值是欧盟循环经济战略的一部分。采用BCR序贯程序对重金属的潜在迁移率进行了研究。此外,同样的程序应用于获得的地聚合物,以研究重金属在地聚合物基质中的封装水平,相应地,新获得的材料的环境足迹。为了验证顺序提取,选择了BCR程序和CRM BCR 701。在本研究中,通过降低样品重量但保持固液比,以及采用不同的上清分离程序,对BCR程序进行了改进。采用ICP-OES法测定渗滤液中Zn、Pb、Cu、Ni、Cd、Cr的含量。在顺序程序中提取的金属量与认证值相符;然而,在个别步骤中观察到一些差异。BCR程序应用于粉煤灰、尾矿和地聚合物样品。根据BCR数据计算不同的指标来评估研究材料的环境足迹。铬、镍、铅和锌在地聚合物基质中的包封效率很高。铜在地聚合物样品中的迁移率增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study of Heavy Metal Encapsulation in Geopolymerized Industrial Waste by Sequential Extraction

The valorization of industrial waste is a part of the circular economy strategy of the European Union. The study of the potential mobility of heavy metals has been performed by the BCR sequential procedure. Additionally, the same procedure was applied to the obtained geopolymers to study the level of heavy metal encapsulation in the geopolymer matrix and, correspondingly, the environmental footprint of the newly obtained materials. For verification of the sequential extraction, the BCR procedure and CRM BCR 701 were chosen. In this study, the BCR procedure was modified by lowering the weight of the sample but maintaining the solid-to-liquid ratio, as well as applying different procedures for supernatant separation. ICP-OES measurement was used for determination of Zn, Pb, Cu, Ni, Cd, and Cr in the leachates. The amount of extracted metals in the sequential procedure agreed with the certified values; however, some discrepancies in individual steps were observed. The BCR procedure was applied to fly ash, mine tailings, and geopolymer samples. Different indices were calculated from the BCR data to assess the environmental footprint of the studied materials. A high efficiency of encapsulation in the geopolymer matrix was observed for Cr, Ni, Pb, and Zn. Copper showed increased mobility in the geopolymer samples.

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来源期刊
JOM
JOM 工程技术-材料科学:综合
CiteScore
4.50
自引率
3.80%
发文量
540
审稿时长
2.8 months
期刊介绍: JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.
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