Post-vulcanization combined with magnetic modification of sulfonated biochar as heterogeneous fenton catalyst for tetracycline degradation

IF 6.3 2区 工程技术 Q1 ENGINEERING, CHEMICAL
Yuanwei Xiao , Huan Ye , Guihong Lan , Haiyan Qiu , Bo Xu , Weiren Dai , Yusong Chen
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引用次数: 0

Abstract

Although the Fenton reaction has shown remarkable effectiveness in degrading antibiotic contamination in water bodies, its strict pH dependence has limited its wide practical application. In this study, a novel magnetic biochar material with dual functions of adsorption and catalysis was successfully synthesized by carbonization of the shell of blue flower blue with concentrated sulfuric acid through sulfide and magnetic modification. The innovation of this material is its ability to overcome the recycling limitations of traditional catalysts while achieving efficient reactions in the pH range of 3–11. In particular, the introduction of sulfur promotes a stable cycle of Fe(II)/Fe(III) in the material, thereby enhancing its catalytic properties. The porous structure of the sulphonated jacaranda hull and its successful loading of sulfur and iron were revealed by SEM, FTIR, XRD, and XPS analysis. The experimental results showed that under the conditions of S-Fe3O4@JSS dosage of 0.2 g/L, hydrogen peroxide concentration of 10 mM, initial pH value of 5, and initial tetracycline concentration of 50 mg/L, the optimal degradation rate of tetracycline was as high as 85.85 %. The mechanism analysis shows that hydroxyl radical plays a key role in this reaction system because S-Fe3O4@JSS not only releases Fe(II) but also catalyzes hydrogen peroxide with the introduction of surface acidic sites and sulfur elements, which increases the free radical yield and accelerates the tetracycline degradation process. This study provides a new efficient and stable method to solve the problem of antibiotic pollution treatment in water.
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来源期刊
Journal of water process engineering
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
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