Preparation of carbon aerogel from waste newspaper for adsorption of antidiabetic drug residue from aqueous system

IF 5.8 2区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Saudi Chemical Society Pub Date : 2024-08-17 DOI:10.1016/j.jscs.2024.101924

Aynun Nahar , Md. Sahadat Hossain , Arup Das , Md. Ahedul Akbor , Umme Sarmeen Akthar , Md. Sha Alam , Nigar Sultana Pinky , Md. Atikur Rahman , Mehedi Hasan , Fariha Afrose

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Abstract

In this study, the waste newspaper was utilized to prepare carbon aerogel (CA) for adsorptive removal of Metformin hydrochloride (MH) (antidiabetic drug residues) from the aqueous system. The prepared CA was characterized using Field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analyser. The MH adsorption was carried out using two types of water, one was laboratory-prepared distilled water and another was real river water. Although, optimum removal around 87 % was observed at pH 3, the removal efficiency at about 63 % estimated at neutral pH. In river water experiment, slightly lower rate of adsorption about 59 % was noticed. Nearly 61 % removal was found for 120 min and then no significant adsorption was found. The pseudo-second-order kinetics and Freundlich isotherm models presented a good interpretation of the adsorption experiment data. Physio-sorption was the primary mechanism of the MH adsorption was confirmed by Temkin and D-R isotherms studies. Regeneration studies demonstrated the removal stability of CA around 32 % until five cycles. An adsorption mechanism was also proposed for the removal of metformin hydrochloride using carbon aerogel.

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利用废报纸制备气凝胶碳以吸附水溶液中的抗糖尿病药物残留物

本研究利用废报纸制备碳气凝胶（CA），用于吸附去除水体系中的盐酸二甲双胍（MH）（抗糖尿病药物残留）。利用场发射扫描电子显微镜（FE-SEM）、X 射线光电子能谱（XPS）和布鲁纳-艾美特-泰勒（BET）分析仪对制备的 CA 进行了表征。MH 吸附使用了两种水，一种是实验室制备的蒸馏水，另一种是真正的河水。虽然在 pH 值为 3 时观察到的最佳去除率约为 87%，但在中性 pH 值时估计去除率约为 63%。在河水实验中，吸附率略低，约为 59%。120 分钟内的去除率接近 61%，之后就没有发现明显的吸附现象。伪二阶动力学和 Freundlich 等温线模型很好地解释了吸附实验数据。Temkin 和 D-R 等温线研究证实了物理吸附是 MH 吸附的主要机制。再生研究表明，在五个循环之前，CA 的去除率稳定在 32% 左右。此外，还提出了使用碳气凝胶去除盐酸二甲双胍的吸附机制。

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

Journal of Saudi Chemical Society CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

8.90

自引率

1.80%

发文量

120

审稿时长

38 days

期刊介绍： Journal of Saudi Chemical Society is an English language, peer-reviewed scholarly publication in the area of chemistry. Journal of Saudi Chemical Society publishes original papers, reviews and short reports on, but not limited to: •Inorganic chemistry •Physical chemistry •Organic chemistry •Analytical chemistry Journal of Saudi Chemical Society is the official publication of the Saudi Chemical Society and is published by King Saud University in collaboration with Elsevier and is edited by an international group of eminent researchers.