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IJERPH
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Second Edition of Technologies for Water and Wastewater Treatment
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Second Edition of Technologies for Water and Wastewater Treatment

A special issue of International Journal of Environmental Research and Public Health (ISSN 1660-4601). This special issue belongs to the section "Environmental Science and Engineering".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 2130

Special Issue Editors

Prof. Dr. Ranil Wickramasinghe

E-Mail Website
Guest Editor
Ralph E Martin Department of Chemical Engineering, and Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR 72701, USA
Interests: water treatment; biopurification; membrane; virus filtration; electrocoagulation
Special Issues, Collections and Topics in MDPI journals
Dr. Jianhua Zhang

E-Mail Website
Guest Editor
Institute for Sustainable Industries & Liveable Cities, Victoria University, P.O. Box 14428, Melbourne, VIC 8001, Australia
Interests: membrane distillation; wastewater treatment; desalination; advanced oxidation; membrane filtration; NF; RO
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Freshwater scarcity is a worldwide issue, and can be partially attributed to pollution and climate change caused by urbanization and industrialization. Water recycling from wastewater, seawater and stormwater are being used to fulfil the increasing demand for freshwater. Different treatment techniques have been employed to convert wastewater for industrial and domestic purposes. Conventional treatment methods such as aeration, coagulation, activated sludge and flocculation have been widely used in combination with membrane technology and advanced oxidation, to remove contaminants and deactivate any pathogens that may be present. The operation cost, greenhouse gas emission, energy consumption, and treatment efficiency of these processes are the main issues that must be addressed. The different sources of the wastewater also limit the employment of different technologies and optimization processes. 

This Special Issue, “Second Edition of Technologies for Water and Wastewater Treatment”, will bring together articles on studies of technology employed in water and wastewater treatment. The Special Issue is requesting articles on all aspects of technology related to water treatment processes, including manuscripts on cost/operation analysis, troubleshooting/alleviation in existing treatment methods, and the application of new techniques in water treatment.

Prof. Dr. Ranil Wickramasinghe
Dr. Jianhua Zhang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Environmental Research and Public Health is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wastewater
  • membrane
  • water treatment
  • water pretreatment
  • desalination

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Published Papers (1 paper)

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Research

17 pages, 3755 KiB  
Article
Effect of Persulfate Activation by Electrogenerated H2O2 and Anodic Oxidation on the Color Removal of Dye Solutions at Pt and BDD Anodes
by Yifan Yao, Kai Zhu, Yucan Liu, Qianjin Liu and Lihua Huang
Int. J. Environ. Res. Public Health 2022, 19(23), 15688; https://doi.org/10.3390/ijerph192315688 - 25 Nov 2022
Cited by 1 | Viewed by 1405
Abstract
In this study, tartrazine solutions were oxidized using innovative electrochemical advanced oxidation processes (EAOPs) that combined persulfate (PS) activation with electrogenerated H2O2, cathodic reduction and anodic oxidation at Pt and BDD anodes, and graphite cathode in an undivided stirred [...] Read more.
In this study, tartrazine solutions were oxidized using innovative electrochemical advanced oxidation processes (EAOPs) that combined persulfate (PS) activation with electrogenerated H2O2, cathodic reduction and anodic oxidation at Pt and BDD anodes, and graphite cathode in an undivided stirred reactor. For the Pt anode, SO4·− was generated from a reduction reaction at the cathode and a reaction between the PS and electrogenerated H2O2. For the BDD anode, SO4·− was generated from a reduction reaction at the cathode, an oxidation reaction at the anode, and a reaction between PS and electrogenerated H2O2. Among these activation methods, the activation efficiency of PS by electrogenerated H2O2 is much better than other methods. The effects of PS concentration up to 36 mM, applied current density between 6 to 15 mA cm−2, and temperatures between 25 to 45 °C were investigated. For the electro-Fenton process with Pt anode (Pt-H2O2/PS process), the best result for oxidizing 250 mg L−1 tartrazine solution was obtained with 37.5 mM Na2SO4 + 9.0 mM Na2S2O8, applied current density at 12 mA cm−2 and 45 °C, acquiring total color removal after 30 min reaction. For the electro-Fenton process with BDD anode (BDD-H2O2/PS process), the best result for oxidizing 250 mg L−1 tartrazine solution was obtained with 25 mM Na2SO4 + 18 mM Na2S2O8, applied current density at 12 mA cm−2 and 45 °C, yielding 100% color removal after 30 min reaction. The main oxidizing agents are SO4·− and OH· in the anodic oxidation process with PS and the electro-Fenton process with PS. It is concluded that the additions of PS tremendously improve the oxidation power of electro-Fenton processes with PS, especially the Pt-H2O2/PS process. Full article
(This article belongs to the Special Issue Second Edition of Technologies for Water and Wastewater Treatment)
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