Removal of methylene blue by using recoverable zeolite/Fe3O4 in a continuous stirred tank reactor (CSTR)

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of the Australian Ceramic Society Pub Date : 2023-12-07 DOI:10.1007/s41779-023-00968-7

Hendri Prasetyo, Mohd Hafiz Dzarfan Othman, Juhana Jaafar, Muhammad Noorul Anam Mohd Norrdin, Khairul Hamimah Abas, Tomohisa Yoshioka, Zhan Li, Mukhlis A. Rahman

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Abstract

Magnetite (Fe₃O₄) particles deposited with zeolite, which was made from sodium hydroxide (NaOH), sodium aluminate (NaAlO₂) and sodium trisilicate (Na₂O₇Si₃) using the hydrothermal process, were used in the adsorption of methylene blue (MB). A continuous stirred tank reactor (CSTR) system was used for the adsorption of MB using zeolite/Fe₃O₄. This study encircled the continuous reactor with a magnet to prevent the adsorbent from flowing to the output, thus producing clean water devoid of Fe₃O₄ particles. The performance of the adsorbent was assessed based on the effects of adsorbent mass, flow rate, pH and concentration. The adsorbent was able to remove approximately 90% of the 20 mg L⁻¹ methylene blue from a 500 mL solution in 2 h, with a maximum adsorption capacity of 30.8528 mg g⁻¹. This adsorption process also exhibited high removal efficiency even after 5 regeneration cycles and 55 h of operation, confirming the successful production of zeolite/Fe₃O₄ as an effective MB adsorbent.

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在连续搅拌罐反应器（CSTR）中使用可回收沸石/Fe3O4 去除亚甲基蓝

磁铁矿（Fe3O4）颗粒与沸石（由氢氧化钠（NaOH）、铝酸钠（NaAlO2）和三硅酸钠（Na2O7Si3）通过水热法制成）沉积在一起，用于吸附亚甲基蓝（MB）。在使用沸石/Fe3O4 吸附甲基溴时，使用了连续搅拌罐反应器（CSTR）系统。这项研究用磁铁将连续反应器包围起来，以防止吸附剂流向输出端，从而产生不含 Fe3O4 颗粒的清洁水。根据吸附剂质量、流速、pH 值和浓度的影响评估了吸附剂的性能。该吸附剂能在 2 小时内从 500 mL 溶液中去除约 90% 的 20 mg L-1 亚甲基蓝，最大吸附容量为 30.8528 mg g-1。即使经过 5 次再生循环和 55 小时的操作，该吸附过程也表现出很高的去除效率，这证实了沸石/Fe3O4 作为一种有效的甲基溴吸附剂的成功生产。

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 the Australian Ceramic Society Materials Science-Materials Chemistry

CiteScore

3.70

自引率

5.30%

发文量

123

期刊介绍： Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted