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Separations
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Separation Technologies and Evaluation Methodologies in Recycling Wastewater for SDG...
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Separation Technologies and Evaluation Methodologies in Recycling Wastewater for SDG 6

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Environmental Separations".

Deadline for manuscript submissions: closed (10 February 2024) | Viewed by 570

Special Issue Editors

Dr. Maurício Rita

E-Mail Website
Guest Editor
NOVA School of Science and Technology, NOVA University Lisbon, Lisbon, Portugal
Interests: drinking water and wastewater treatment systems; pollutants of emerging concern; wastewater reuse; circular economy
Dr. Maria Bernardo

E-Mail Website
Guest Editor
LAQV/Requimte, NOVA School of Science and Technology, NOVA University Lisbon, Lisbon, Portugal
Interests: adsorbents; adsorption technology; water treatment; porous carbons; nanomaterials; emerging water pollutants; circular economy
Special Issues, Collections and Topics in MDPI journals
Dr. Ines Matos

E-Mail Website
Guest Editor
LAQV/REQUIMTE, NOVA School of Science and Technology, NOVA University Lisbon, Lisbon, Portugal
Interests: adsorbents; adsorption technology; water treatment; porous carbons; nanomaterials; emerging water pollutants; circular economy; green chemistry; heterogeneous catalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wastewater management and reuse are crucial for environmental preservation and water scarcity mitigation. By treating wastewater to high standards, it can be safely repurposed for non-potable uses, conserving freshwater resources and alleviating the burden on treatment plants. This aligns with the circular economy approach in the water sector, promoting responsible resource management. Advanced treatment technologies and monitoring are essential for reliable and cost-effective wastewater reuse. They also help address pollutants of emerging concern like pharmaceuticals, personal care products, microplastics, and PFAS, which pose challenges to wastewater treatment. Robust strategies and research are needed to mitigate their impact on ecosystems and human health. Also, comprehensive wastewater treatment systems, including disinfection and proactive measures against emerging pollutants, ensure environmental preservation and sustainable water management. This approach supports SDG 6, ensuring clean water and sanitation for all.

Through innovative solutions like wastewater reuse, advanced treatment, and circular economy principles, we can address water scarcity, reduce pollution, and achieve SDG 6’s goals. Embracing these practices fosters a sustainable and resilient future.

Therefore, it is my pleasure to invite you to contribute your research article, communication, or review to this Special Issue dedicated to circular economy in the water sector, wastewater treatment and reuse, pollutants of emerging concern, and contributions to SDG 6.

Dr. Maurício Rita
Dr. Maria Bernardo
Dr. Ines Matos
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. Separations 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 2600 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

  • SDG 6
  • circular economy in water sector
  • wastewater reuse
  • pollutants of emerging concern
  • drinking water residuals
  • wastewater treatment advances for environmental protection

Published Papers (1 paper)

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Research

18 pages, 2103 KiB  
Article
Removal of Emerging Contaminants from Water by Using Carbon Materials Derived from Tingui Shells
by Débora dos Santos, Wardleison Moreira, Thiago de Araújo, Maria Bernardo, Isabel Fonseca, Indianara Ostroski and Maria Angélica de Barros
Separations 2024, 11(7), 215; https://doi.org/10.3390/separations11070215 - 12 Jul 2024
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Abstract
This study explored the adsorption of acetaminophen and caffeine using CO2-activated biochar (BT-CO2) and hydrochar (HT-CO2) derived from Tingui shell biomass. The experimental data from kinetic and equilibrium adsorption tests were employed in batch and fixed-bed systems. [...] Read more.
This study explored the adsorption of acetaminophen and caffeine using CO2-activated biochar (BT-CO2) and hydrochar (HT-CO2) derived from Tingui shell biomass. The experimental data from kinetic and equilibrium adsorption tests were employed in batch and fixed-bed systems. In the batch system, a specific amount of the adsorbent was added to a known volume of the solution, and the mixture was agitated for a set period to allow adsorption to occur. In the fixed-bed system, the solution was passed through a column packed with the adsorbent, allowing for continuous adsorption. These systems pave the way for future research. The findings revealed that HT-CO2 exhibited a greater surface area and a higher presence of oxygen-containing functional groups than BT-CO2. These functional oxygen groups had a notable impact on the adsorption capacity of the adsorbents for pharmaceutical substances. In the batch systems, BT-CO2 demonstrated a maximum adsorption capacity of 221.4 mg g−1 for acetaminophen and 162.7 mg g−1 for caffeine, while HT-CO2 exhibited higher capacities of 383.2 mg g−1 for acetaminophen and 189.7 mg g−1 for caffeine. In the fixed bed configuration, HT-CO2 displayed a maximum adsorption capacity of 82.2 mg g−1 for acetaminophen and 45.60 mg g−1 for caffeine. The predominant mechanisms involved in the removal of acetaminophen and caffeine were identified as H-bonding and π-π bonds. These results underscore the promising potential of these carbons as effective adsorbents for treating water contaminated with pharmaceutical residues, inspiring further exploration in this field and offering hope for the future of water treatment by providing a solid foundation for future research and development. Full article
(This article belongs to the Special Issue Separation Technologies and Evaluation Methodologies in Recycling Wastewater for SDG 6)
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