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Applied Sciences
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Photocatalytic Applications for Water Treatment
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Photocatalytic Applications for Water Treatment

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (30 November 2018) | Viewed by 8345

Special Issue Editor

Prof. Dr. María Emma Borges

E-Mail Website
Guest Editor
Chemical Engineering Department, University of La Laguna, 38200 La Laguna, Spain
Interests: photocatalysis for sustainable environmental applications: air/water decontamination, biofuels production, hydrogen from water splitting
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The need to preserve the environment has led to the search for new methods for the efficient removal of chemical compounds that alter the stability of our resources. This interest parallels the increasing need for green chemistry and sustainable decontamination processes. Water pollution is a fact of great importance since pollutants can accumulate and be transported by superficial and underground waters.

Photocatalysis is an advanced oxidation process, which is particularly interesting for the treatment of water because of its efficiency in neutralizing a wide variety of pollutants thanks to the generation of highly reactive hydroxyl radicals.

This technology is considered today as a competitor of classical purification techniques. Therefore, a lot of scientific studies and patents can be found in the literature, evidencing how photocatalysis has been a field in expansion over recent years.

Of special interest are technology applications that take advantage of sunlight for the treatment of wastewater containing non-biodegradable pollutants.

This Special Issue calls for papers on Photocatalysis and Photocatalytic sustainable processes for water treatment, covering topics regarding several applications for pollutants removal from water, emergent contaminants, photocatalytic materials for solar applications, etc.

Prof. Dr. María Emma Borges
Guest Editor

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. Applied Sciences is an international peer-reviewed open access semimonthly 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 2400 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

  • Photocatalysis
  • Photocatalytic treatment
  • Water treatment
  • Solar photocatalysis
  • Photocatalytic materials
  • Emergent contaminants
  • Solar-activated photocatalysts
  • Photocatalytic industrial systems
  • Solar-assisted photocatalytic systems

Published Papers (2 papers)

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Research

14 pages, 2287 KiB  
Article
Packed Bed Photoreactor for the Removal of Water Pollutants Using Visible Light Emitting Diodes
by Olga Sacco, Diana Sannino and Vincenzo Vaiano
Appl. Sci. 2019, 9(3), 472; https://0-doi-org.brum.beds.ac.uk/10.3390/app9030472 - 30 Jan 2019
Cited by 31 | Viewed by 4574
Abstract
A packed bed photoreactor was developed using a structured photocatalyst active under visible light. The packed bed reactor was irradiated by visible light-emitting diodes (LEDs) for the evaluation of photocatalytic activity in the removal of different types of water pollutants. By using a [...] Read more.
A packed bed photoreactor was developed using a structured photocatalyst active under visible light. The packed bed reactor was irradiated by visible light-emitting diodes (LEDs) for the evaluation of photocatalytic activity in the removal of different types of water pollutants. By using a flexible LEDs strip as the external light source, it was possible to use a simple cylindrical geometry for the photoreactor, thereby enhancing the contact between the photocatalyst and the water to be treated. The visible light active structured photocatalyst was composed by N-doped TiO2 particles supported on polystyrene spheres. Photocatalytic results showed that the almost total methylene blue decolorization was achieved after 120 min of irradiation. Moreover, the developed packed bed photoreactor was effective in the removal of ceftriaxone, paracetamol, and caffeine, allowing it to reach the almost total degradation of the pollutants and a total organic carbon removal above 80% after 180 min of visible light irradiation. Full article
(This article belongs to the Special Issue Photocatalytic Applications for Water Treatment)
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14 pages, 2185 KiB  
Article
Synergistic Mechanism of Rare-Earth Modification TiO2 and Photodegradation on Benzohydroxamic Acid
by Chunying Wang, Ting Zeng, Sipin Zhu and Chuantao Gu
Appl. Sci. 2019, 9(2), 339; https://0-doi-org.brum.beds.ac.uk/10.3390/app9020339 - 18 Jan 2019
Cited by 13 | Viewed by 3341
Abstract
Rare earth elements are plentiful in Gannan area, China, and there is a large amount of wastewater from all kinds of mines. In this paper, rare-earth modification TiO2 composites (RE/TiO2, RE = La, Ce, Gd, Yb) was studied by theory [...] Read more.
Rare earth elements are plentiful in Gannan area, China, and there is a large amount of wastewater from all kinds of mines. In this paper, rare-earth modification TiO2 composites (RE/TiO2, RE = La, Ce, Gd, Yb) was studied by theory computation and experimental performance. The prepared RE/TiO2 was investigated for the degradation of benzohydroxamic acid (BHA) as a typical residual reagent in wastewater from beneficiation. The crystallinity, morphology, specific surface area, light absorption, and composition of compound were investigated by various techniques. As a result of computation and experimentation, four different electron configurations of rare earth all retained the anatase phase of TiO2 and reduced the band gap of TiO2 to some degree compared with pure TiO2. Different rare-earth elements and calcination temperatures resulted in different removal effects on BHA. The optimum doping contents were 0.75% (500 °C), 0.20% (500 °C), 0.70% (500 °C) and 0.50% (450 °C) for La, Ce, Gd, Yb respectively. All the RE/TiO2 composites studied in this research still possessed good photoactivity after four runs, which supports the theoretical and practical basement for the photocatalytic treatment of mining and metallurgy wastewater. Full article
(This article belongs to the Special Issue Photocatalytic Applications for Water Treatment)
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