Eco-friendly synthesis of magnetic activated carbon from used water filter cartridges for efficient methylene blue adsorption

Cleaner Water Pub Date : 2025-08-28 DOI:10.1016/j.clwat.2025.100118

Dilip D. Anuse , Suryakant A. Patil , Ashwini A. Chorumale , Akanksha G. Kolekar , Prachi P. Bote , Laxman S. Walekar , Mukund G. Mali , Samadhan P. Pawar

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Abstract

Using activated carbon (AC) derived from used water filter cartridges (UWFC), we developed a waste-to-resource method to remove dyes from water. Mild reactivation at 400

° C

for 1 h produced AC-UWFC, which was subsequently transformed into magnetic activated carbon (MAC-UWFC) for efficient adsorption of methylene blue (MB). Characterization confirmed a mesoporous structure (BET: 404.78

m^{2} g^{- 1}

) with high stability. Optimal adsorption occurred at a pH of 8, using 0.2 g of MAC-UWFC over 1 h. Adsorption followed the Langmuir isotherm (227.27

mg g^{- 1}

) and pseudo-second-order kinetics. MAC-UWFC maintained an efficiency of 92.32 % after eight cycles, demonstrating its effectiveness in wastewater treatment.

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环保合成磁性活性炭从使用过的水过滤器有效吸附亚甲基蓝

我们利用从废旧水滤芯（UWFC）中提取的活性炭（AC），开发了一种废物资源化去除水中染料的方法。在400°C下轻度再活化1 h生成AC-UWFC，随后转化为磁性活性炭（MAC-UWFC），用于高效吸附亚甲基蓝（MB）。表征证实了具有高稳定性的介孔结构（BET: 404.78 m2−1）。在pH为8时，使用0.2 g MAC-UWFC超过1小时，吸附效果最佳。吸附遵循Langmuir等温线（227.27 mg−1）和准二级动力学。经过8个循环后，MAC-UWFC的处理效率仍保持在92.32%，证明了其处理废水的有效性。

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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Cleaner Water

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