An effective and novel photocatalyst derived from the electroplating sludge for removing methylene blue in aqueous solutions

IF 3.4 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES International Journal of Environmental Science and Technology Pub Date : 2024-09-23 DOI:10.1007/s13762-024-05980-3

H. T. Tran, M. T. Nguyen, H. N. Nguyen, T. V. Dang, H. T. Nguyen, D. D. Bich, T. T. Nguyen, K. M. Nguyen, H. T. M. Tran

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Abstract

In this study, we reported that the electroplating sludges, a solid waste of the electroplating process, could be employed as an effective and novel photocatalyst for removing methylene blue in an aqueous solution. The treated materials were comprehensively characterized by SEM, XRD, FTIR, and BET. The obtained results showed that the chemical composition of electroplating sludges contained a large amount of various metal oxides that would be beneficial for photocatalysis. As expected, the best photocatalytic degradation of methylene blue (removal ~ 98.0%) was found to be at a concentration of 20 ppm and pH of 9 under Xenon light irradiation time of 120 min. In addition, the as-treatment electroplating sludges also exhibited high removal efficiency in real wastewater in terms of TOC and COD values, proving electroplating sludges as an effective and promising photocatalyst for removing methylene blue and other organic pollutants in actual wastewater.

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一种从电镀污泥中提取的新型有效光催化剂，可去除水溶液中的亚甲基蓝

在这项研究中，我们报道了电镀过程中产生的固体废物——电镀污泥，可以作为一种有效的新型光催化剂，用于去除水溶液中的亚甲基蓝。采用SEM、XRD、FTIR、BET等手段对处理后的材料进行了综合表征。结果表明，电镀污泥的化学成分中含有大量的各种金属氧化物，有利于光催化。结果表明，当氙光照射时间为120 min，浓度为20 ppm， pH = 9时，对亚甲基蓝的光催化降解效果最佳，去除率达98.0%。此外，处理后的电镀污泥在实际废水中TOC和COD的去除率也较高，证明了电镀污泥是一种有效的、有前景的光催化剂，可用于去除实际废水中的亚甲基蓝等有机污染物。

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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.