Zhe Yang , Jin Chai , Yu Wei , Ruobing Pi , Siyang Wang , Xuhui Sun
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引用次数: 0
Abstract
The efficiency of heterogeneous catalysts in activating peroxymonosulfate for the degradation of organic pollutants depends largely on the catalyst immobilization method and the stability of the active components. In this work, a facile method of Fe immobilization using potassium ferrate modified graphite felt was developed and active Fe3O4 nanoparticles were successfully fixed on graphite felt (GF), named Fe(VI)-GF. The Fe(VI)-GF/PMS system removed 99.48 % of NPX, exhibiting excellent performance and stability. Electron Paramagnetic Resonance showed that Fe(VI)-GF-activated PMS generated both radical (SO4•−, •OH) and non-radical (1O2) to co-degrade the pollutants, and the analysis results of the NPX degradation intermediates by gas chromatography–mass spectrometry and toxicity assessment confirmed the environmental friendliness of the system. The degradation efficiency of NPX by the Fe(VI)-GF fixed-bed reactor was further evaluated, and the average removal of NPX reached 92.01 % after treating 48 L of NPX for 120 h, demonstrating the applicability of the Fe(VI)-GF system in sustainable water treatment.
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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