Reaction mechanism study of calcium carbide residue with graphene oxide in aqueous environment: Adsorption properties and mechanical potentials

IF 5.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Arabian Journal of Chemistry Pub Date : 2024-10-30 DOI:10.1016/j.arabjc.2024.106038

Na Li , Meixin Fan , Ping Jiang , Yingdi Pang , Song Yang , Wei Wang

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Abstract

Graphene Oxide (GO) is widely used, but its hydrophilic properties make it difficult to remove once it enters water and soil environments. In this paper, the adsorption effect of calcium carbide residue (CCR) as adsorbent on GO was investigated through a series of adsorption tests. Adsorption thermodynamics, kinetics, isotherm models, and various characterization techniques were employed to explore the adsorption mechanism. Additionally, the study assessed CCR’s ability to stabilize GO-contaminated soils through unconfined compressive strength tests. The results showed that (1) at T = 303 K, with a pH of 11 and an initial GO concentration of 80 mg/L, CCR demonstrated excellent adsorption performance. (2) The adsorption process followed the Langmuir isotherm and a quasi-second-order kinetic model, indicating chemical adsorption with spontaneous heat adsorption. (3) CCR not only acts as an effective adsorbent for removing GO from wastewater but also has the potential to strengthen GO-contaminated soils. In addition, due to its favorable environmental benefits, this study has a wide range of potential applications in industrial fields such as wastewater treatment, air purification, and energy storage and conversion. This study not only proposes an effective method for removing graphene oxide from aqueous environments, but also provides a new idea for waste resource utilization, which helps to achieve the dual goals of environmental protection and resource reuse.

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电石残渣与氧化石墨烯在水环境中的反应机理研究：吸附特性和机械电位

氧化石墨烯（GO）被广泛应用，但其亲水性使其进入水和土壤环境后难以去除。本文通过一系列吸附试验，研究了电石渣（CCR）作为吸附剂对 GO 的吸附效果。研究采用了吸附热力学、动力学、等温线模型和各种表征技术来探索吸附机理。此外，研究还通过无约束抗压强度测试评估了 CCR 稳定受 GO 污染土壤的能力。结果表明：（1）在 T = 303 K、pH 值为 11、初始 GO 浓度为 80 mg/L 的条件下，CCR 表现出优异的吸附性能。(2）吸附过程遵循 Langmuir 等温线和准二阶动力学模型，表明具有自发吸热的化学吸附作用。(3) CCR 不仅是去除废水中 GO 的有效吸附剂，还具有强化被 GO 污染的土壤的潜力。此外，由于其良好的环境效益，本研究在废水处理、空气净化、能源储存和转换等工业领域也有广泛的潜在应用前景。本研究不仅提出了一种从水环境中去除氧化石墨烯的有效方法，还为废物资源化利用提供了一种新思路，有助于实现环境保护和资源再利用的双重目标。

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

Arabian Journal of Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

10.80

自引率

3.30%

发文量

763

审稿时长

63 days

期刊介绍： The Arabian Journal of Chemistry is an English language, peer-reviewed scholarly publication in the area of chemistry. The Arabian Journal of Chemistry publishes original papers, reviews and short reports on, but not limited to: inorganic, physical, organic, analytical and biochemistry. The Arabian Journal of Chemistry is issued by the Arab Union of Chemists and is published by King Saud University together with the Saudi Chemical Society in collaboration with Elsevier and is edited by an international group of eminent researchers.