Alkali-activated materials containing mine tailings and zeolite for seepage water treatment in a closed nickel mine

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2024-09-09 DOI:10.1007/s13762-024-06002-y

J. Laukkanen, H. Runtti, I. Lancellotti, T. Luukkonen, C. Leonelli, U. Lassi

{"title":"Alkali-activated materials containing mine tailings and zeolite for seepage water treatment in a closed nickel mine","authors":"J. Laukkanen, H. Runtti, I. Lancellotti, T. Luukkonen, C. Leonelli, U. Lassi","doi":"10.1007/s13762-024-06002-y","DOIUrl":null,"url":null,"abstract":"<p>In the present study, alkali-activated materials were assessed as adsorbents for mine water treatment. The composition of alkali-activated materials, involving mixtures of metakaolin, blast-furnace slag, mine tailings, and zeolite, was optimized based on their leaching behavior and adsorption performance. The most effective adsorbent contained solely blast furnace slag as an aluminosilicate precursor and was selected for a pilot-scale study at a closed nickel mine in Finland. In the pilot, seepage water from a gangue area with an influent flow rate of 0.5 m<sup>3</sup>/d was treated using a permeable reactive barrier set-up containing 10 kg of slag-based adsorbent prepared by a granulation-alkali activation process. During a one-week experiment, the adsorbent granules were capable of effectively uptaking Ni, Fe, and Mn from the seepage water; the removal percentages of Ni, Fe, and Mn were 82.4%, 81.6%, and 82.5%, respectively. The results indicated the feasibility of blast furnace slag-based adsorbents for toxic element removal in a potentially sustainable approach.</p>","PeriodicalId":589,"journal":{"name":"International Journal of Environmental Science and Technology","volume":"10 1","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Environmental Science and Technology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s13762-024-06002-y","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

In the present study, alkali-activated materials were assessed as adsorbents for mine water treatment. The composition of alkali-activated materials, involving mixtures of metakaolin, blast-furnace slag, mine tailings, and zeolite, was optimized based on their leaching behavior and adsorption performance. The most effective adsorbent contained solely blast furnace slag as an aluminosilicate precursor and was selected for a pilot-scale study at a closed nickel mine in Finland. In the pilot, seepage water from a gangue area with an influent flow rate of 0.5 m³/d was treated using a permeable reactive barrier set-up containing 10 kg of slag-based adsorbent prepared by a granulation-alkali activation process. During a one-week experiment, the adsorbent granules were capable of effectively uptaking Ni, Fe, and Mn from the seepage water; the removal percentages of Ni, Fe, and Mn were 82.4%, 81.6%, and 82.5%, respectively. The results indicated the feasibility of blast furnace slag-based adsorbents for toxic element removal in a potentially sustainable approach.

Abstract Image

查看原文本刊更多论文

含有矿山尾矿和沸石的碱活性材料用于封闭镍矿的渗水处理

本研究将碱活性材料作为矿井水处理的吸附剂进行了评估。碱活性材料包括偏高岭土、高炉矿渣、矿山尾矿和沸石的混合物，根据其浸出行为和吸附性能对其成分进行了优化。最有效的吸附剂仅含有作为铝硅酸盐前体的高炉矿渣，并被选中在芬兰的一个封闭镍矿进行试验性研究。在试验过程中，使用了一种可渗透的反应屏障装置来处理矸石区的渗漏水，该装置的进水流量为 0.5 立方米/天，其中含有 10 千克通过造粒-碱活化工艺制备的矿渣吸附剂。在为期一周的实验中，吸附剂颗粒能够有效吸附渗出水中的镍、铁和锰；镍、铁和锰的去除率分别为 82.4%、81.6% 和 82.5%。研究结果表明，高炉矿渣吸附剂以潜在的可持续方式去除有毒元素是可行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.