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State-of-the-Art Photochemical Technology for Water and Wastewater Treatment
Topic Information
Dear Colleagues,
Recent studies have been devoted to the use of advanced oxidation processes (AOPs) for the destruction of organic materials from water and wastewater, mainly because AOPs can entirely eradicate organics. Depending on the applications, different AOPs have been studied. Among AOPs, photocatalysis is a promising process of eradicating almost all types of organics in wastewater. Despite the advantages of TiO2, there are two major limitations in its photocatalytic activity: its activation in the ultraviolet range, and its high rate of electron-hole recombination, leading to its low efficiency. Therefore, the photocatalytic efficiency depends on how well a photocatalyst can prevent electron-hole pair recombination. There have been many studies on photocatalysis, including doping metals and non-metals, as well as mixing different photocatalysts. Other AOPs, such as UV/H2O2, UV/Ozone, Fenton, Fenton-like, photoFenton, photoelectrochemical processes among others, have been studied for different applications, including the destruction of organic pollutants and disinfection of pathogens. The focus of this Topic is on the latest developments in all AOPs, including photochemical reaction engineering, photoreactor design with high mass transfer rate, photocatalyst development, or combining different AOPs with other processes to enhance organic degradation in water and wastewater. This Topic strives to provide an overview on state-of-the-art photochemical technology for water and wastewater treatment. All papers should report on trends and advances in the fields of photochemical technologies for water and wastewater treatment.
Prof. Dr. Mehrab Mehrvar
Prof. Dr. Marta Gmurek
Topic Editors
Keywords
- photochemical reaction engineering
- photochemistry
- advanced oxidation technologies
- wastewater
- wastewater treatment
- photocatalysis
- doping photocatalysts
- photoreactor design
- photocatalytic eficiency
- combined photocatalysis with other processes including biological processes
- photocatalytic kinetics
- UV/Hydrogen Peroxide
- UV/Ozone
- Fenton, photoFenton
- photoelectrochemical treatment
Participating Journals
| Journal Name | Impact Factor | CiteScore | Launched Year | First Decision (median) | APC |
|---|---|---|---|---|---|
Catalysts
|
3.9 | 6.3 | 2011 | 14.3 Days | CHF 2700 |
ChemEngineering
|
2.5 | 4.7 | 2017 | 17.2 Days | CHF 1600 |
International Journal of Environmental Research and Public Health
|
- | 5.4 | 2004 | 29.6 Days | CHF 2500 |
Molecules
|
4.6 | 6.7 | 1996 | 14.6 Days | CHF 2700 |
Water
|
3.4 | 5.5 | 2009 | 16.5 Days | CHF 2600 |
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Published Papers (9 papers)
Planned Papers
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Treatment of Actual Winery Wastewater by the Fenton-Like Advanced Oxidation Process: Optimization to Improve Organic Removal, Reduce Inorganic Sludge Production and Enhance Co-treatment at Municipal Wastewater Treatment Facilities
Authors and Affiliation: Mehrab, Ryerson University
Title: Photooxidation as an alternative for water treatment purification: light source and reactor design for optimizing micropollutants removal
Authors and Affiliation: Marta Gmurek, Lodz University of Technology
Title: A comparative study of the spectral, luminescent and photochemical properties of yttrium and lanthanum aluminates obtained by Pechini sol–gel process for wastewater treatment
Authors: Ionela Carazeanu Popovici, Aurel Diacon, Florin Moscalu and Anca Dumbrava*
Affiliation: Ovidius University of Constanta, Department of Chemistry and Chemical Engineering, Constanta, Romania
Abstract: The contamination of industrial water with dyes become an important environment issue and a variety of metal oxides have been tested in order to remove organic pollutants from wastewater. In this work, we studied yttrium and lanthanum aluminates obtained by Pechini sol-gel method in order to be used in wastewater treatment. The aluminates powders were characterized by XRD, TEM, DRS, FTIR and PL spectroscopy. The band gap energy was determined by using the Tauc equation and a higher value was calculated for lanthanum aluminate. The photocatalytic properties were tested in the degradation of both cationic (methylene blue and crystal violet) and anionic (Congo red) dyes. A higher photocatalytic activity was identified for yttrium aluminate (90% - 96% after 90 min) in all the degradation processes, with the highest value for methylene blue solution (96.37%); at the same a photocatalytic activity of 46.88% was determined for LaAlO3 in the degradation of methylene blue. The high photocatalytic activity of yttrium aluminate can be correlated with the presence of a mixture of yttrium aluminum perovskite with yttrium aluminum garnet, which influenced both its photocatalytic and optical properties.
Title: Natural environment resistance to anthropopressure. Assessing the potential of surface water self-purification process based on advances in photochemical water and wastewater treatment technologies
Authors: Dorota Gryglik
Affiliation: Lodz University of Technology, Faculty of Civil Engineering, Architecture and Environmental Engineering, Institute of Environmental Engineering and Building Services, 6 Politechniki Street, 93-590 Lodz
Abstract: This paper examines the potential of using solar energy to degrade selected types of pollutants found in the aquatic environment. The cross-section of undesirable chemical com-pounds entering the environment changes with the development of civilization. At present, particularly great importance is attached to the so-called anthropogenic micropollutants whose effects on the natural and human environment cannot yet be accurately estimated. They are most often not completely biologically decomposed and therefore pass unchanged through municipal wastewater treatment plants and thus reach the aquatic environment. Therefore, the problem of treatment of wastewater containing anthropogenic micropollutants is currently an important aspect of environmental engineering. The article presents, among others, the sources of selected micropollutants, the scale of their occurrence and the possibility of their natural transformation in the environment depending on the presence of factors limiting and supporting the process of water self-purification. The paper focuses mainly on processes initiated by absorption of sun-light by compounds present in the environment or by molecules of the pollutant itself. Laboratory photochemical methods based on these natural processes for the elimination of selected micropollutants from the aquatic environment are also reviewed.
