绿色合成颗粒活性炭/锌铁纳米复合材料基生物漂白红土铁(BLaFe),用于吸附-芬顿氧化法去除水中的罗丹明B

IF 1.6 Q3 WATER RESOURCES
B. S, R. K N, Manu B., M. Y. Sreenivasa
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引用次数: 1

摘要

以生物浸出的红土铁(BLFe)为前驱体,以番石榴叶提取物为原料,合成了一种用于染料非均相Fenton氧化的新型高效催化剂颗粒活性炭(GAC)基锌铁纳米复合材料。利用SEM、EDS、XRD和BET比表面积分析对合成的纳米复合材料进行了表征。采用吸附-芬顿氧化法,用纳米复合材料对罗丹明染料进行降解。研究并报道了纳米复合材料在芬顿氧化罗丹明B(RhB)中的催化作用。在处理的200分钟内,观察到最大的染料去除率为96.2%,COD去除率为64.2%。纳米复合材料用量的增加对染料去除有积极影响,标记5g/L为最佳用量。吸附研究表明,使用BLFe基GAC/锌铁复合材料去除RhB符合Freundlich吸附等温线模型,吸附容量为47.81mg/g。吸附和芬顿氧化的结合导致纳米复合材料具有更高的去除效率。可重复使用性研究证实,废催化剂可以重复使用五个循环。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Green synthesis of granular activated carbon/zinc ferro nanocomposites-based bioleached laterite iron (BLaFe) for the removal of Rhodamine B in water using adsorption–Fenton's oxidation process
Novel cost-effective catalyst granular activated carbon (GAC)-based zinc ferro nanocomposites for the heterogeneous Fenton's oxidation of dye were synthesized using bioleached laterite iron (BLFe) as a precursor and Psidium gujava leaf extract. Synthesized nanocomposites were characterized using SEM, EDS, XRD and BET surface area analysis. The degradation of Rhodamine dye was carried out with nanocomposites using adsorption–Fenton's oxidation process. The catalytic role of nanocomposites in Fenton's oxidation of Rhodamine B (RhB) was investigated and reported. The maximum dye removal of 96.2% was observed with 64.2% COD removal within 200 min of treatment. An increase in nanocomposite dosage has a positive effect on dye removal marking 5 g/L as an optimum dosage. Adsorption studies reveal that RhB removal using BLFe-based GAC/zinc ferro composites fits the Freundlich Adsorption Isotherm model with an adsorption capacity of 47.81 mg/g. A combination of adsorption and Fenton's oxidation has resulted in higher removal efficiency with nanocomposite material. Reusability studies confirm that the spent catalyst can be reused for five cycles.
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来源期刊
CiteScore
2.30
自引率
6.20%
发文量
136
审稿时长
14 weeks
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