Removal of Cd, Cu, Ni, and Pb from Nanoscale Zero-Valent Iron Amended Soil Using 0.1 M Acetic Acid Solution

IF 1.4 Q4 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Environmental and Climate Technologies Pub Date : 2022-01-01 DOI:10.2478/rtuect-2022-0031

V. Danila, T. Januševičius

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引用次数: 3

Abstract

Abstract The purpose of the study was to evaluate the possibility of removing heavy metal cations from single-metal spiked soil samples, which were pretreated with nanoscale zero-valent iron (nZVI) particles. Sandy soil was artificially contaminated with copper (Cu), cadmium (Cd), nickel (Ni), and lead (Pb). Contaminated soil samples were amended with different doses of nZVI (0.35, 0.70 and 1.05 %). A sequential extraction method was used to determine the fractionation of heavy metal cations in the control and nZVI amended soil samples. A solution of 0.1 M acetic acid (pH 3.0) was used to investigate the removal of heavy metals from control and nZVI-amended soil samples. The results showed that nZVI reduced the amount of metals in the exchangeable form and increased the proportion of these metals associated with amorphous iron (Fe) oxides. The results also showed that the removal efficiencies of heavy metals increased with increasing nZVI dose, that is, from 46.9 %, 5.77 %, 33.5 %, and 2.70 % to 55.9 %, 12.3 %, 46.2 %, and 3.79 % for Cd, Cu, Ni, and Pb, respectively. The study indicated that the application of nZVI in soil could be beneficial for subsequent removal of heavy metals from soil using 0.1 M acetic acid solution.

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0.1 M醋酸溶液去除纳米级零价铁改性土壤中的Cd、Cu、Ni和Pb

摘要/ Abstract摘要:研究纳米级零价铁(nZVI)预处理单金属加钉土壤样品去除重金属阳离子的可能性。砂土被铜(Cu)、镉(Cd)、镍(Ni)和铅(Pb)人工污染。用不同剂量的nZVI(0.35%、0.70%和1.05%)对污染土壤样品进行处理。采用序贯萃取法测定对照和nZVI改性土壤样品中重金属阳离子的分异。采用0.1 M醋酸溶液(pH 3.0)对对照和nzvi改性土壤样品中重金属的去除效果进行了研究。结果表明，nZVI降低了可交换态金属的含量，增加了这些金属与非晶态铁氧化物结合的比例。结果还表明，随着nZVI剂量的增加，重金属的去除率分别从46.9%、5.77%、33.5%和2.70%提高到55.9%、12.3%、46.2%和3.79%。研究表明，在土壤中施用nZVI有利于0.1 M乙酸溶液对土壤中重金属的后续去除。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental and Climate Technologies GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY-

CiteScore

3.10

自引率

28.60%

发文量

审稿时长

16 weeks

期刊介绍： Environmental and Climate Technologies provides a forum for information on innovation, research and development in the areas of environmental science, energy resources and processes, innovative technologies and energy efficiency. Authors are encouraged to submit manuscripts which cover the range from bioeconomy, sustainable technology development, life cycle analysis, eco-design, climate change mitigation, innovative solutions for pollution reduction to resilience, the energy efficiency of buildings, secure and sustainable energy supplies. The Journal ensures international publicity for original research and innovative work. A variety of themes are covered through a multi-disciplinary approach, one which integrates all aspects of environmental science: -Sustainability of technology development- Bioeconomy- Cleaner production, end of pipe production- Zero emission technologies- Eco-design- Life cycle analysis- Eco-efficiency- Environmental impact assessment- Environmental management systems- Resilience- Energy and carbon markets- Greenhouse gas emission reduction and climate technologies- Methodologies for the evaluation of sustainability- Renewable energy resources- Solar, wind, geothermal, hydro energy, biomass sources: algae, wood, straw, biogas, energetic plants and organic waste- Waste management- Quality of outdoor and indoor environment- Environmental monitoring and evaluation- Heat and power generation, including district heating and/or cooling- Energy efficiency.