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Application of Radiation in Wastewater Treatment

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (20 September 2024) | Viewed by 2800

Special Issue Editors


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Guest Editor
Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Loures, Portugal
Interests: aromatic plants; antimicrobial properties; bioactivity; food safety and quality
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Centro de Ciências e Tecnologias Nucleares (C2TN), Instituto Superior Técnico, Universidade de Lisboa, 2695-066 Loures, Portugal
Interests: bioactive compounds; agro-industrial waste valorization; natural products; food preservation; radiation technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Due to the proliferation of the human population, urbanization and industrialization, the problems associated with wastewater disposal have become an inevitable issue. The conventional wastewater treatment plants (WWTPs) seem to present inefficient processes in the treatment of contaminated wastewaters, making the development of emerging technologies, such as ionizing radiation, essential to overcoming this need. The application of this innovative technology could contribute to a reduction in the negative impact of these discharges on the environment.

This Special Issue aims to present recent advances in the research and applications of ionizing radiation in treating municipal and industrial wastewaters, alone or in combination with other processes. Among other topics, we welcome the submission of papers that address the optimized treatment conditions/methodologies employed for the degradation of pollutants and their reaction mechanisms, kinetic modelling, the inactivation of microorganisms, and toxicity assessment and economic evaluation, involving experimental and pilot-scale applications.

In this context, we welcome the submission of original, communication and review articles addressing the feasibility and sustainability of this technology.

Dr. Sandra Cabo Verde
Dr. Joana Madureira
Guest Editors

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Keywords

  • wastewater treatment
  • ionizing radiation
  • wastewater management
  • bioremediation
  • water radiolysis
  • radiolytic degradation
  • inactivation of microorganisms

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Published Papers (2 papers)

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Research

13 pages, 2890 KiB  
Article
Enhancing Emerging Pollutant Removal in Industrial Wastewater: Validation of a Photocatalysis Technology in Agri-Food Industry Effluents
by Víctor Fabregat
Appl. Sci. 2024, 14(14), 6308; https://doi.org/10.3390/app14146308 - 19 Jul 2024
Cited by 2 | Viewed by 781
Abstract
Emerging pollutants in wastewater pose significant risks to human health and wildlife, particularly due to their persistence in treated effluents from WWTPs. Very recent research has focused on developing new techniques based on advanced oxidation processes using inorganic and organic photocatalysts for treating [...] Read more.
Emerging pollutants in wastewater pose significant risks to human health and wildlife, particularly due to their persistence in treated effluents from WWTPs. Very recent research has focused on developing new techniques based on advanced oxidation processes using inorganic and organic photocatalysts for treating polluted effluents under visible light. This study investigates a pesticide-removal system utilizing heterogeneous photoactive polymeric materials P2, P3, and P4. These materials, engineered as hydrophilic polymeric microparticles and functionalized with Rose Bengal, have demonstrated efficient singlet oxygen generation and first-order kinetics in the degradation of AHMPD, a pyrimidine fungicide. Given that most studies in the literature have concentrated on urban WWTPs, with less emphasis on industrial wastewater treatment, this research focused on real water samples from the effluent of an industrial WWTP in the agri-food sector, which processes large volumes of citrus and where high concentrations of AHMPD and other pesticides were detected at certain times of the year. The degradation potential of photoactive materials P3 and P4 was evaluated, achieving removal rates of AHMPD up to 85% under conditions of pH = 11 with 48 h of exposure to visible light. Full article
(This article belongs to the Special Issue Application of Radiation in Wastewater Treatment)
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19 pages, 5872 KiB  
Article
Diclofenac Degradation in Aqueous Solution Using Electron Beam Irradiation and Combined with Nanobubbling
by Yongxia Sun, Joana Madureira, Gonçalo C. Justino, Sandra Cabo Verde, Dagmara Chmielewska-Śmietanko, Marcin Sudlitz, Sylwester Bulka, Ewelina Chajduk, Andrzej Mróz, Shizong Wang and Jianlong Wang
Appl. Sci. 2024, 14(14), 6028; https://doi.org/10.3390/app14146028 - 10 Jul 2024
Cited by 1 | Viewed by 1325
Abstract
Diclofenac (DCF) degradation in aqueous solution under electron beam (EB) irradiation after nanobubbling treatment was studied and compared with treatments using nanobubbling or EB irradiation alone. It was found that the removal efficiency of DCF increased by increasing the adsorbed dose, and it [...] Read more.
Diclofenac (DCF) degradation in aqueous solution under electron beam (EB) irradiation after nanobubbling treatment was studied and compared with treatments using nanobubbling or EB irradiation alone. It was found that the removal efficiency of DCF increased by increasing the adsorbed dose, and it depended on the initial concentration of DCF in solution, being higher for the lower concentrations. Furthermore, when using the nanobubbling treatment alone, about 16% of the DCF was removed from the aqueous solution due to the OH radicals generated during the process. On the other hand, using EB treatment at 0.5 kGy, the degradation of DCF increased from 36% to 51% when adding a nanobubbling pretreatment before the EB radiation. At higher doses (5 kGy), the degradation of DCF was 96% using EB radiation and 99% using nanobubbling before EB radiation, indicating that the nanobubbling effect was not synergistic. With an increase in the adsorbed doses, EB radiation seemed to play a more important role on the degradation of DCF, probably due to the reactive species generated. Moreover, the solutions treated with nanobubbling and EB radiation presented higher COD values and radiolytic by-products with aromatic rings with chlorine. This work can support the development of innovative strategies to treat municipal wastewaters using ionizing radiation technologies. Full article
(This article belongs to the Special Issue Application of Radiation in Wastewater Treatment)
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