Efficient removal of amoxycillin antibiotics onto magnetic graphene oxide: adsorption performance, mechanism, and regeneration exploration

IF 2.3 4区化学 Q3 CHEMISTRY, ANALYTICAL

International Journal of Environmental Analytical Chemistry Pub Date : 2023-10-17 DOI:10.1080/03067319.2023.2266698

Sulieman Ibraheem Shelash Al-Ha-Wary, Reena Gupta, I. B. Sapaev, Khulood H. Oudaha, Mays Jassim Abdalkareem, Ali Alsalamy, Ahmed Hussien Radie Alawadi, Fatemeh Zisti, Hossein Moein, Davoud Balarak

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引用次数: 0

Abstract

ABSTRACTThe present study was done to synthesise an adsorbent, i.e. magnetic graphene oxide (MGO) nanocomposite, which was performed based on a facile precipitation method and was utilised in experiments for removing amoxycillin (AMX). The characteristics of the prepared adsorbent were defined based on commonly utilised analyses (SEM, XRD, BET, TEM, FTIR, VSM, and pHpzc). According to kinetic studies, the PSO model was found as an applicable model for describing data. Moreover, the two-step diffusion process, i.e. diffusion in the boundary layer and the porous structures, was perceived for the evaluated process based on the IPD model. The isotherm models, including Langmuir, Freundlich, Temkin, and D–R, were employed for fitting data and calculating AMX adsorption capacity, among which Langmuir was the best one; using this model, the maximum adsorption capacities for MGO were 91.4, 103.9, 112.3, and 122.5 mg/g, which were achieved at 20, 30, 40, and 50°C. In addition, a feasible, spontaneous, and endothermic process was found for the adsorption of AMX ions, according to thermodynamic studies. The highest percentage of removal (100%) was obtained for the initial concentration of 25 mg/L at 50°C using the adsorbent dose of 1.5 g/L at a pH of 5 and a contact time of 90 min. The values of 74.4 m2/g and 27.74 emu/g were detected for the specific surface area and saturation magnetisation values of the MGO, respectively. The overall results were representative of the suitability of the MGO as an adsorbent for removing AMX from aqueous media.KEYWORDS: Amoxycillinmagnetic graphene oxideadsorption isothermadsorption kineticsthermodynamic AcknowledgmentsThe authors would like to thank Zahedan University of Medical Sciences for financial support and assistance in performing the experimental work of this research (code: 10490).Disclosure statementNo potential conflict of interest was reported by the author(s).

查看原文本刊更多论文

磁性氧化石墨烯对阿莫西林抗生素的高效去除:吸附性能、机理及再生探索

摘要本研究采用易沉淀法合成磁性氧化石墨烯纳米复合材料，并将其用于去除阿莫西林(AMX)的实验。通过SEM、XRD、BET、TEM、FTIR、VSM和pHpzc等常用分析方法确定了所制备吸附剂的特性。通过动力学研究，发现PSO模型是一种适用于数据描述的模型。此外，基于IPD模型的评估过程可以感知到边界层和多孔结构中的两步扩散过程。采用Langmuir、Freundlich、Temkin、D-R等温模型拟合数据，计算AMX吸附量，其中Langmuir模型效果最好;该模型在20、30、40和50℃条件下，对MGO的最大吸附量分别为91.4、103.9、112.3和122.5 mg/g。此外，根据热力学研究，发现了一种可行的、自发的、吸热的AMX离子吸附过程。在50℃条件下，吸附剂浓度为25 mg/L，吸附剂剂量为1.5 g/L, pH为5，接触时间为90 min，吸附剂的去除率最高(100%)。MGO的比表面积和饱和磁化率分别为74.4 m2/g和27.74 emu/g。总体结果代表了MGO作为吸附剂从水介质中去除AMX的适用性。致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢致谢披露声明作者未报告潜在的利益冲突。

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来源期刊

International Journal of Environmental Analytical Chemistry 环境科学-分析化学

CiteScore

5.90

自引率

7.70%

发文量

373

审稿时长

4.4 months

期刊介绍： International Journal of Environmental Analytical Chemistry comprises original research on all aspects of analytical work related to environmental problems. This includes analysis of organic, inorganic and radioactive pollutants in air, water, sediments and biota; and determination of harmful substances, including analytical methods for the investigation of chemical or metabolic breakdown patterns in the environment and in biological samples. The journal also covers the development of new analytical methods or improvement of existing ones useful for the control and investigation of pollutants or trace amounts of naturally occurring active chemicals in all environmental compartments. Development, modification and automation of instruments and techniques with potential in environment sciences are also part of the journal. Case studies are also considered, particularly for areas where information is scarce or lacking, providing that reported data is significant and representative, either spatially or temporally, and quality assured. Owing to the interdisciplinary nature of this journal, it will also include topics of interest to researchers in the fields of medical science (health sciences), toxicology, forensic sciences, oceanography, food sciences, biological sciences and other fields that, in one way or another, contribute to the knowledge of our environment and have to make use of analytical chemistry for this purpose.