Magnetic banana fiber catalyst for efficient Cr(VI) reduction: a sustainable approach to waste valorization and water treatment

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-15 DOI:10.1016/j.jwpe.2025.107886

Pinar Belibagli , Zelal Isik , Erdal Yabalak , Nadir Dizge

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引用次数: 0

Abstract

This study focused on producing banana fiber (BF) from waste banana bunch stalks and imparting magnetic properties (Fe₃O₄) to the fibers. Characterization analyses confirmed the successful synthesis of the BF-Fe₃O₄ catalyst. Its effectiveness in removing Cr(VI) via a Fenton-like process using heterogeneous catalysts was investigated. Key parameters were optimized to evaluate the catalyst's potential, including pH, catalyst dosage, contact time, H₂O₂ concentration, and Cr(VI) concentration. Under optimal conditions—pH 2.0, 0.5 g/L BF-Fe₃O₄, 5 μL/L H₂O₂, and a 60-min contact time—100 % removal of a 10 mg/L Cr(VI) solution was achieved. Reusability tests demonstrated consistent removal efficiency even after five cycles. Kinetic studies indicated that the Fenton-like process followed a second-order kinetic model. Overall, the BF-Fe₃O₄ catalyst, derived from banana waste, proved effective for Cr(VI) removal while offering cost-effectiveness, reusability, and a sustainable approach to waste valorization.

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磁性香蕉纤维催化剂高效还原Cr(VI)：废物增值和水处理的可持续方法

研究了利用废香蕉束秆制备香蕉纤维，并对其进行了Fe3O4磁性改性。表征分析证实了BF-Fe3O4催化剂的成功合成。考察了非均相催化剂在类fenton工艺中去除Cr（VI）的效果。通过对pH、催化剂用量、接触时间、H2O2浓度、Cr（VI）浓度等关键参数进行优化，评价催化剂的潜力。在ph为2.0、BF-Fe3O4为0.5 g/L、H2O2为5 μL/L、接触时间为60 min的条件下，对10 mg/L的Cr（VI）溶液的去除率达到100%。可重用性测试表明，即使在五个循环之后，清除效率也保持一致。动力学研究表明，类芬顿过程遵循二级动力学模型。总体而言，从香蕉废料中提取的BF-Fe3O4催化剂被证明对Cr（VI）去除有效，同时具有成本效益，可重复使用和可持续的废物增值方法。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies