Insight into recent advances of post synthetically modified Zr-basedMOF for the treatment of high COD produced water

IF 3.1 4区工程技术 Q3 CHEMISTRY, PHYSICAL Adsorption Pub Date : 2025-04-22 DOI:10.1007/s10450-025-00608-5

Humaira Gul Zaman, Lavania Baloo, Puganeshwary Palaniandy, Mohd Remy Rozainy Mohd Arif Zainol

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Abstract

Organic pollution is a major environmental issue that requires the deployment of steps to lower the organic content of water. In this study, Glycidyl methacrylate (GMA) functionalized Zr-MOF was fabricated and employed as a selective adsorbent in PW to reduce COD level. XRD, EDX, BET, PSA and FT-IR were employed to investigate the properties of the synthesized MOF. The synthesized MOF has an enormous surface area of 1144 m^2/g, a mean pore diameter of 2.84 nm, and an overall pore volume of 0.37 cm³/g. Investigating the effects of pH (2–12), contact time (10–120 min), and adsorbent dose (0-2000 mg/L) on COD % removal allowed us to assess the effectiveness of UiO-66-GMA. The results demonstrated that at pH 8 and a 500 mg/L dose of MOF, COD removal efficiency increased from 35.2 to 94.67%. Additionally, as contact time was extended from 10 to 50 min, the removal efficiency improved from 52.78 to 92.4%. Adsorption isotherm analysis revealed that the pseudo-second-order kinetic and Freundlich isothermal models provided a very good match to the adsorption data (R² = 0.98). A maximum COD removal efficiency of 96.12% was reported. Based on the current research, it is feasible to draw the conclusion that Zr-functionalized MOFs are an efficient adsorbent for the adsorption of organic contaminants.

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合成后改性zr基mof处理高COD采出水的研究进展

有机污染是一个主要的环境问题，需要采取措施降低水中的有机含量。本研究制备了甲基丙烯酸缩水甘油酯（GMA）功能化Zr-MOF，并将其作为PW中的选择性吸附剂来降低COD水平。采用XRD、EDX、BET、PSA和FT-IR对合成的MOF进行了表征。合成的MOF具有1144 m2/g的巨大表面积，平均孔径为2.84 nm，总孔体积为0.37 cm3/g。研究了pH（2-12）、接触时间（10-120 min）和吸附剂剂量（0-2000 mg/L）对COD %去除率的影响，使我们能够评估UiO-66-GMA的有效性。结果表明，在pH为8、MOF投加量为500 mg/L时，COD去除率由35.2%提高到94.67%。当接触时间由10 min延长至50 min时，去除率由52.78%提高到92.4%。吸附等温分析表明，拟二级动力学模型和Freundlich等温模型与吸附数据吻合较好（R2 = 0.98）。COD去除率最高达96.12%。基于目前的研究，可以得出zr功能化mof是一种有效吸附有机污染物的吸附剂。

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来源期刊

Adsorption 工程技术-工程：化工

CiteScore

8.10

自引率

3.00%

发文量

审稿时长

2.4 months

期刊介绍： The journal Adsorption provides authoritative information on adsorption and allied fields to scientists, engineers, and technologists throughout the world. The information takes the form of peer-reviewed articles, R&D notes, topical review papers, tutorial papers, book reviews, meeting announcements, and news. Coverage includes fundamental and practical aspects of adsorption: mathematics, thermodynamics, chemistry, and physics, as well as processes, applications, models engineering, and equipment design. Among the topics are Adsorbents: new materials, new synthesis techniques, characterization of structure and properties, and applications; Equilibria: novel theories or semi-empirical models, experimental data, and new measurement methods; Kinetics: new models, experimental data, and measurement methods. Processes: chemical, biochemical, environmental, and other applications, purification or bulk separation, fixed bed or moving bed systems, simulations, experiments, and design procedures.