纯方钠石的合成、表征及其在去除水中重金属离子中的应用

IF 0.9 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Environmental Engineering and Management Journal Pub Date : 2021-05-01 DOI:10.30638/eemj.2021.066

S. M. Kamyab, S. Modabberi, Craig Williams, Alireza Badiei

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引用次数: 1

摘要

利用碱性熔融技术的优势，以高岭石为原料成功合成了纯方钠石。然后通过XRD、SEM/EDX和FTIR等方法对合成的方钠石进行了表征。还通过分批吸附实验考察了这些方钠石对水溶液中Cu2+、Zn2+和Ni2+离子的处理效率。随后，通过ICP-OES分析检测最终浸出液中Cu2+、Zn2+和Ni2+离子的浓度。此外，结果证明，假设金属离子去除可以应用于多层吸附，吸附数据与Freundlich等温线模型非常吻合。此外，吸附动力学遵循伪二阶模型，表明吸附过程的速率可以通过化学吸附来控制。简言之，合成的方钠石具有良好的去除水溶液中重金属离子的性能，可以揭示其在净化应用中的巨大潜力。此外，考虑到天然方钠石的高成本，合成具有均匀多孔结构的方钠石可以用作伟大的吸附剂，对于环境目的来说是有益的。

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PURE SODALITE SYNTHESIS, CHARACTERIZATION AND APPLICATION FOR HEAVY METAL IONS REMOVAL FROM AQUEOUS SOLUTIONS

Pure sodalites were successfully synthesized from kaolinite taking the advantages of alkaline fusion technique. The synthesized sodalites were then characterized via XRD, SEM/EDX, and FTIR methods. The efficiency of these sodalites for treatment of Cu2+, Zn2+ and Ni2+ ions in aqueous solutions was also scrutinized through batch adsorption experiments. Subsequently, the concentrations of Cu2+, Zn2+, and Ni2+ ions in final leachates were detected by ICP-OES analysis. Furthermore, the results proved that adsorption data fitted very well to Freundlich isotherm model assuming that the metal ions removal can be applied to multilayer adsorption. Moreover, the kinetics of the adsorption followed the pseudo-second-order model suggesting that the rate of adsorption process may be controlled by the chemical sorption. In brief, the synthesized sodalites excellent performance for heavy metal ions removal from aqueous solutions can shed light on their remarkable potential in purification applications. Additionally, considering high cost of the natural sodalite, synthesis of sodalites with homogeneous porous structure that can be used as great adsorbents would be profitable for environmental purposes.

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来源期刊

Environmental Engineering and Management Journal 环境科学-环境科学

CiteScore

1.60

自引率

36.40%

发文量

审稿时长

8.6 months

期刊介绍： Environmental Engineering and Management Journal is an international journal that publishes reviewed original research papers of both experimental and theoretical nature in the following areas: environmental impact assessment; environmental integrated management; risk assessment and management; environmental chemistry; environmental protection technologies (water, air, soil); pollution reduction at source and waste minimization; chemical and biological process engineering; cleaner production, products and services; sensors in environment control; sources of radiation and protection technologies; waste valorization technologies and management; environmental biotechnology; energy and environment; modelling, simulation and optimization for environmental protection; technologies for drinking and industrial water; life cycle assessments of products; environmental strategies and policies; cost-profitt analysis in environmental protection; eco-industry and environmental market; environmental education and sustainable development. Environmental Engineering and Management Journal will publish: original communications describing important new discoveries or further developments in the above-mentioned topics; reviews, mainly of new rapidly developing areas of environmental protection; special themed issues on relevant topics; advertising.