Advanced Oxidation Process for Wastewater Treatment

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 1427

Special Issue Editors


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Guest Editor
School of Environment Science and Technology, Dalian University of Technology, Dalian 116024 China
Interests: photocatalysis and electrocatalysis; pollution control microfluidic technology; in situ characterization for environmental catalysis
Department of Environmental Science and Technology, Dalian Minzu University, Dalian 116600, China
Interests: photocatalysis; pollution removal technology; environmental nanomaterials

Special Issue Information

Dear Colleagues,

With the rapid development of social economy, the discharge of wastewater has caused growing environmental problems. Especially, refractory organic pollutants in wastewater are usually persistent and toxic in the water environment, posing a threat to the ecosystem and human health. Therefore, efficient treatment technologies for highly concentrated wastewater are urgently needed. Advanced oxidation processes (AOPs) have been regarded as effective wastewater treatment techniques capable of oxidizing a great branch of toxic and refractory pollutants, which have the advantages of high treatment efficiency, rapid oxidation rate and no secondary pollution. AOPs are implicated in the mineralization of pollutants by generating reactive oxygen species (ROS) including hydroxyl radicals (•OH), superoxide radicals (•O2), sulfates etc. The active radicals generated during AOPs are generally driven by the Fenton reaction, photocatalysis, electrochemical reaction, ozonation, ultrasound and so on. The generation of ROS is critical in determining the oxidation capacity of AOPs. While AOPs have already been employed in wastewater treatment, highly effective and cost-efficient AOPs are still necessary for their commercialization.

This Special Issue on “Advanced Oxidation Process for Wastewater Treatment” seeks original research and review articles on the latest advances of Fenton and Fenton-like oxidation, photocatalytic oxidation, electrocatalytic oxidation, ozone oxidation, persulfate oxidation, ultrasonic oxidation, and supercritical oxidation. This Issue aims to promote new highly effective and cost-efficient AOPs for wastewater treatment. Topics include, but are not limited to:

  1. Efficient AOPs for persistent organic pollutants;
  2. Advanced functional materials for oxidation processes;
  3. In situ characterization and mechanism investigation for AOPs;
  4. Sustainability assessment of AOPs.

Dr. Wei Xiong
Dr. Xuejun Zou
Guest Editors

Manuscript Submission Information

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Keywords

  • advanced oxidation processes
  • advanced functional materials
  • reactive oxygen species
  • in situ characterization

Published Papers (1 paper)

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Research

16 pages, 3304 KiB  
Article
Increasing Surface Functionalities of FeCl3-Modified Reed Waste Biochar for Enhanced Nitrate Adsorption Property
by Peijing Kuang, Yubo Cui, Zhongwei Zhang, Kedong Ma, Wanjun Zhang, Ke Zhao and Xiaomeng Zhang
Processes 2023, 11(6), 1740; https://doi.org/10.3390/pr11061740 - 7 Jun 2023
Cited by 2 | Viewed by 1138
Abstract
Ferric chloride (FeCl3) modified reed straw-based biochar was synthesized to remove nitrate from aqueous solutions and achieve waste recycling. The adsorption of nitrate onto Fe-RBC-600 adsorbents could be described by the pseudo-second-order kinetic model and fitted to Langmuir adsorption, and the [...] Read more.
Ferric chloride (FeCl3) modified reed straw-based biochar was synthesized to remove nitrate from aqueous solutions and achieve waste recycling. The adsorption of nitrate onto Fe-RBC-600 adsorbents could be described by the pseudo-second-order kinetic model and fitted to Langmuir adsorption, and the maximum adsorption capacity predicted using the Langmuir model was 272.024 mg g−1. The adsorbent characterization indicated that a high temperature of 600 °C and an oxygen-poor environment could develop a hydrophobic surface and O-containing functional groups on the biochar, which provided more binding sites for Fe3+/Fe2+ attachment and increased the surface functionality of Fe-RBC-600 with iron oxide formation. The increasing surface functionality successfully enhanced the nitrate adsorption property. The mechanism of nitrate adsorption was mainly attributed to the physical adsorption onto the positive surface and sequential chemical reduction by Fe2+, and the electrostatic adsorption by protonated amine groups. Full article
(This article belongs to the Special Issue Advanced Oxidation Process for Wastewater Treatment)
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