使用喷雾干燥法制备的氧化铝/氧化石墨烯颗粒去除水溶液中的 2,4-二氯苯氧乙酸

IF 3.6 Q2 ENVIRONMENTAL SCIENCES

Resources Pub Date : 2024-03-11 DOI:10.3390/resources13030040

A. Kurmysheva, E. Kuznetsova, Marina D. Vedenyapina, P. Podrabinnik, N. S. Pinargote, A. Smirnov, S. Grigoriev

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引用次数: 0

摘要

本研究采用喷雾干燥法制备了含有 0.25%vol. 氧化石墨烯的氧化铝颗粒，用于从水溶液中去除 2,4-二氯苯氧乙酸（2,4-D）除草剂。利用红外光谱、扫描电子显微镜和拉曼光谱对所获得的吸附剂进行了研究。结果表明，喷雾干燥粉末中含有石墨烯。在环境温度下，通过改变 pH 值和吸附时间等工艺参数，利用所获得的材料对 2,4-D 进行了吸附去除。根据 Langmuir 等温线模式和伪二阶动力学模型，2,4-D 的吸附属于单层化学吸附。单层的最大 Langmuir 吸附量为 35.181 mg/g。结果表明，通过喷雾干燥获得的 Al2O3-0.25%vol. GO 粉末适用于生产有毒除草剂的吸附剂。

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Removal of 2,4-Dichlorophenoxyacetic Acid from Aqueous Solutions Using Al2O3/Graphene Oxide Granules Prepared by Spray-Drying Method

Within this study, aluminum oxide granules with 0.25%vol. of graphene oxide were prepared by a spray-drying method to make an adsorbent for the 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicide removal from aqueous solutions. The obtained adsorbent was studied using infrared spectroscopy, scanning electron microscopy and Raman spectroscopy. The presence of graphene in the spray-dried powder was confirmed. The adsorption removal of 2,4-D using the obtained material was performed at an ambient temperature by varying the process parameters such as pH and adsorption time. The adsorption of 2,4-D was a monolayer chemisorption according to the Langmuir isotherm pattern and a pseudo-second-order kinetic model. The maximum Langmuir adsorption capacity of the monolayer was 35.181 mg/g. The results show that the Al2O3-0.25%vol. GO powder obtained by spray drying is suitable for the production of adsorbents for toxic herbicides.

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来源期刊

Resources Environmental Science-Nature and Landscape Conservation

CiteScore

7.20

自引率

6.10%

发文量

审稿时长

11 weeks

期刊介绍： Resources (ISSN 2079-9276) is an international, scholarly open access journal on the topic of natural resources. It publishes reviews, regular research papers, communications and short notes, and there is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental and methodical details must be provided so that the results can be reproduced. There are, in addition, unique features of this journal: manuscripts regarding research proposals and research ideas will be particularly welcomed, electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Subject Areas: natural resources, water resources, mineral resources, energy resources, land resources, plant and animal resources, genetic resources, ecology resources, resource management and policy, resources conservation and recycling.