Removal of Pharmaceuticals in Water and Wastewater Treatment

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Toxicity Reduction and Environmental Remediation".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 7043

Special Issue Editors


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Guest Editor
Department of Chemistry and CESAM, University of Aveiro, Portugal
Interests: development of techniques for the quantification of pharmaceuticals in the environment (as immunoassays (ELISA); high performance liquid chromatography (HPLC); capillary electrophoresis (MEKC)); occurrence of organic pollutants in the environment; removal of pharmaceuticals from the aquatic environment, through the development of sustainable remediation technologies, by using alternative adsorbents, photolysis (using solar radiation), photocatalysis; implementation of circular economy in technologies developed whenever possible; evaluation of the persistence of organic contaminants

E-Mail Website
Guest Editor
Department of Chemistry and CESAM, University of Aveiro, Portugal
Interests: development of low-cost methodologies for the quantification of organic contaminants in water matrices; application of enzyme-linked immunosorbent assays (ELISA) to quantify pharmaceuticals in environmental samples; occurrence of organic pollutants in the environment (ground, surface and wastewaters); persistence and fate of pharmaceuticals in the environment: photodegradation, adsorption, etc.; removal of pharmaceuticals from the aquatic environment using low-cost alternatives, such as photodegradation, using solar radiation

Special Issue Information

Dear Colleagues,

Human activities have detrimental effects on water quality, such as the contamination of water with organic pollutants, specifically pharmaceuticals. This is a well-documented topic and findings point to wastewaters as the main sources for the presence of these pollutants in the aquatic environment. Therefore, water remediation has gaining increased attention in the last few years. The research on different alternatives for the removal of pharmaceuticals from water and wastewater allows either improving existing processes or developing new ones to clean water, assuring a safe discharge into the environment. Additionally, greater sustainability can be accomplished in water treatment facilities by selecting the right treatment solution. Therefore, it is essential to give a step forward and find innovative, sustainable, and cost-effective technologies for the removal of pharmaceuticals from water, which constitutes a great challenge for the researchers on this field of research. This Special Issue aims to present and discuss scientific developments on the sustainable removal of pharmaceuticals from water and wastewater, contributing to improving current knowledge on the topic. In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Alternative water treatments;
  • Advanced oxidation processes;
  • Photodegradation;
  • Photocatalysis;
  • Sorption and Alternative adsorbents;
  • Development of new materials;
  • Wastewater management.

We look forward to receiving your contributions.

Dr. Carla Patrícia Silva
Dr. Diana L.D. Lima
Guest Editors

Manuscript Submission Information

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Keywords

  • pharmaceuticals
  • removal treatments
  • wastewater
  • surface waters
  • sustainability
  • low-cost technologies

Published Papers (2 papers)

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Research

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16 pages, 2673 KiB  
Article
Photodegradation of Aquaculture Antibiotics Using Carbon Dots-TiO2 Nanocomposites
by Vitória L. Louros, Liliana M. Ferreira, Valentina G. Silva, Carla Patrícia Silva, Manuel A. Martins, Marta Otero, Valdemar I. Esteves and Diana L. D. Lima
Toxics 2021, 9(12), 330; https://0-doi-org.brum.beds.ac.uk/10.3390/toxics9120330 - 02 Dec 2021
Cited by 7 | Viewed by 2519
Abstract
In this work, carbon dots (CD) were synthesized and coupled to titanium dioxide (TiO2) to improve the photodegradation of antibiotics in aquaculture effluents under solar irradiation. Oxolinic acid (OXA) and sulfadiazine (SDZ), which are widely used in aquaculture, were used as [...] Read more.
In this work, carbon dots (CD) were synthesized and coupled to titanium dioxide (TiO2) to improve the photodegradation of antibiotics in aquaculture effluents under solar irradiation. Oxolinic acid (OXA) and sulfadiazine (SDZ), which are widely used in aquaculture, were used as target antibiotics. To prepare nanocomposites of CD containing TiO2, two modes were used: in-situ (CD@TiO2) and ex-situ (CD/TiO2). For CD synthesis, citric acid and glycerol were used, while for TiO2 synthesis, titanium butoxide was the precursor. In ultrapure water (UW), CD@TiO2 and CD/TiO2 showed the largest photocatalytic effect for SDZ and OXA, respectively. Compared with their absence, the presence of CD@TiO2 increased the photodegradation of SDZ from 23 to 97% (after 4 h irradiation), whereas CD/TiO2 increased the OXA photodegradation from 22 to 59% (after 1 h irradiation). Meanwhile, in synthetic sea salts (SSS, 30‰, simulating marine aquaculture effluents), CD@TiO2 allowed for the reduction of SDZ’s half-life time (t1/2) from 14.5 ± 0.7 h (in absence of photocatalyst) to 0.38 ± 0.04 h. Concerning OXA in SSS, the t1/2 remained the same either in the absence of a photocatalyst or in the presence of CD/TiO2 (3.5 ± 0.3 h and 3.9 ± 0.4 h, respectively). Overall, this study provided novel perspectives on the use of eco-friendly CD-TiO2 nanocomposites for the removal of antibiotics from aquaculture effluents using solar radiation. Full article
(This article belongs to the Special Issue Removal of Pharmaceuticals in Water and Wastewater Treatment)
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Review

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26 pages, 1557 KiB  
Review
Antibiotics in Aquaculture Wastewater: Is It Feasible to Use a Photodegradation-Based Treatment for Their Removal?
by Carla Patrícia Silva, Vitória Louros, Valentina Silva, Marta Otero and Diana L. D. Lima
Toxics 2021, 9(8), 194; https://0-doi-org.brum.beds.ac.uk/10.3390/toxics9080194 - 21 Aug 2021
Cited by 23 | Viewed by 3518
Abstract
Aquacultures are a sector facing a huge development: farmers usually applying antibiotics to treat and/or prevent diseases. Consequently, effluents from aquaculture represent a source of antibiotics for receiving waters, where they pose a potential threat due to antimicrobial resistance (AMR) induction. This has [...] Read more.
Aquacultures are a sector facing a huge development: farmers usually applying antibiotics to treat and/or prevent diseases. Consequently, effluents from aquaculture represent a source of antibiotics for receiving waters, where they pose a potential threat due to antimicrobial resistance (AMR) induction. This has recently become a major concern and it is expectable that regulations on antibiotics’ discharge will be established in the near future. Therefore, it is urgent to develop treatments for their removal from wastewater. Among the different possibilities, photodegradation under solar radiation may be a sustainable option. Thus, this review aims at providing a survey on photolysis and photocatalysis in view of their application for the degradation of antibiotics from aquaculture wastewater. Experimental facts, factors affecting antibiotics’ removal and employed photocatalysts were hereby addressed. Moreover, gaps in this research area, as well as future challenges, were identified. Full article
(This article belongs to the Special Issue Removal of Pharmaceuticals in Water and Wastewater Treatment)
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