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Materials Design for Pollutant Sensing and Environmental Remediation
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Materials Design for Pollutant Sensing and Environmental Remediation

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: closed (10 April 2022) | Viewed by 8576

Special Issue Editors

Prof. Dr. Rita Giovannetti

E-Mail Website
Guest Editor
School of Science and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Camerino, Italy
Interests: environmental chemistry; environmental remediation; photocatalysis in water treatment; metal nanoparticles; nanomaterials; optical sensors; SERS; porphyrins; graphene; organic and inorganic pollutants
Special Issues, Collections and Topics in MDPI journals
Dr. Marco Zannotti

E-Mail Website
Guest Editor
School of Science and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Camerino, Italy
Interests: environmental chemistry; environmental remediation; photocatalysis; metal nanoparticles; nanomaterials; sensors; SERS; DSSC; porphyrins; dyes; graphene; organic and inorganic pollutants
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Many countries around the globe do not have proper drinking water provision and lack proper sanitation. Environmental sustainability, water purification, and water management must be linked together, and for this reason, urgent innovative technologies that use clean energy and deal with pollutants efficiently are necessary.

For these reasons, the scientific community is always in search of new and more efficient materials applied for environmental remediation through photocatalysis and adsorption processes.

In addition, high industrialization with large pollutant discharge makes the improvement of fast and sensible detection methods for pollutant compounds in water solutions necessary, and thus, the development of materials for sensory applications represents an emerging sector.

In this context, you are invited to submit a manuscript to this Special Issue that aims to collect contributions on innovative functional materials obtained with simple, green, and new synthetic or biosynthetic routes for environmental remediation and sensory applications.

Prof. Dr. Rita Giovannetti
Dr. Marco Zannotti
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. Materials 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 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

  • environmental remediation
  • adsorbent materials
  • photocatalytic materials
  • active materials in chemosensor applications
  • nanomaterials
  • biomaterials

Published Papers (3 papers)

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Research

12 pages, 1905 KiB  
Article
Photocatalytic Inactivation of Salmonella typhimurium by Floating Carbon-Doped TiO2 Photocatalyst
by Sarunas Varnagiris, Marius Urbonavicius, Sandra Sakalauskaite, Emilija Demikyte, Simona Tuckute and Martynas Lelis
Materials 2021, 14(19), 5681; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14195681 - 29 Sep 2021
Cited by 9 | Viewed by 1796
Abstract
Photocatalysis application is considered as one of the most highly promising techniques for the reduction in wastewater pollution. However, the majority of highly efficient photocatalyst materials are obtained as fine powders, and this causes a lot of photocatalyst handling and reusability issues. The [...] Read more.
Photocatalysis application is considered as one of the most highly promising techniques for the reduction in wastewater pollution. However, the majority of highly efficient photocatalyst materials are obtained as fine powders, and this causes a lot of photocatalyst handling and reusability issues. The concept of the floating catalyst proposes the immobilization of a photocatalytic (nano)material on relatively large floating substrates and is considered as an encouraging way to overcome some of the most challenging photocatalysis issues. The purpose of this study is to examine floating photocatalyst application for Salmonella typhimurium bacteria inactivation in polluted water. More specifically, high-density polyethylene (HDPE) beads were used as a photocatalyst support for the immobilization of carbon-doped TiO2 films forming floating photocatalyst structures. Carbon-doped TiO2 films in both amorphous and anatase forms were deposited on HDPE beads using the low-temperature magnetron sputtering technique. Bacteria inactivation, together with cycling experiments, revealed promising results by decomposing more than 95% of Salmonella typhimurium bacteria in five consecutive treatment cycles. Additionally, a thorough analysis of the deposited carbon-doped TiO2 film was performed including morphology, elemental composition and mapping, structure, and depth profiling. The results demonstrate that the proposed method is a suitable technique for the formation of high-quality photocatalytic active films on thermal-sensitive substrates. Full article
(This article belongs to the Special Issue Materials Design for Pollutant Sensing and Environmental Remediation)
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22 pages, 3564 KiB  
Article
Ammonia Bioremediation from Aquaculture Wastewater Effluents Using Arthrospira platensis NIOF17/003: Impact of Biodiesel Residue and Potential of Ammonia-Loaded Biomass as Rotifer Feed
by Mohamed Ashour, Ahmed E. Alprol, Ahmed M. M. Heneash, Hosam Saleh, Khamael M. Abualnaja, Dalal Alhashmialameer and Abdallah Tageldein Mansour
Materials 2021, 14(18), 5460; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14185460 - 21 Sep 2021
Cited by 32 | Viewed by 2943
Abstract
The present work evaluated the capability of Arthrospira platensis complete biomass (ACDW) and the lipid-free biomass (LFB) to remove ammonium ions (NH4+) from aquaculture wastewater discharge. Under controlled conditions in flasks filled with 100 mL of distilled water (synthetic aqueous [...] Read more.
The present work evaluated the capability of Arthrospira platensis complete biomass (ACDW) and the lipid-free biomass (LFB) to remove ammonium ions (NH4+) from aquaculture wastewater discharge. Under controlled conditions in flasks filled with 100 mL of distilled water (synthetic aqueous solution), a batch process ion-exchange was conducted by changing the main parameters including contact times (15, 30, 45, 60, 120, and 180 min), initial ammonium ion concentrations (10, 20, 30, 40, 50, and 100 mg·L−1), and initial pH levels (2, 4, 6, 8, and 10) at various dosages of ACDW and LFB as adsorbents (0.02, 0.04, 0.06, 0.08, and 0.1 g). After lab optimization, ammonia removal from real aquaculture wastewater was also examined. The removal of ammonium using ACDW and LFB in the synthetic aqueous solution (64.24% and 89.68%, respectively) was higher than that of the real aquaculture effluents (25.70% and 37.80%, respectively). The data of IR and Raman spectroscopy confirmed the existence of various functional groups in the biomass of ACDW and LFB. The adsorption equilibrium isotherms were estimated using Freundlich, Langmuir, and Halsey models, providing an initial description of the ammonia elimination capacity of A. platensis. The experimental kinetic study was suitably fit by a pseudo-second-order equation. On the other hand, as a result of the treatment of real aquaculture wastewater (RAW) using LFB and ACDW, the bacterial counts of the LFB, ACDW, ACDW-RAW, and RAW groups were high (higher than 300 CFU), while the LFB-RAW group showed lower than 100 CFU. The current study is the first work reporting the potential of ammonia-loaded microalgae biomass as a feed source for the rotifer (Brachionus plicatilis). In general, our findings concluded that B. plicatilis was sensitive to A. platensis biomass loaded with ammonia concentrations. Overall, the results in this work showed that the biomass of A. platensis is a promising candidate for removing ammonia from aquaculture wastewater. Full article
(This article belongs to the Special Issue Materials Design for Pollutant Sensing and Environmental Remediation)
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25 pages, 4047 KiB  
Article
Potential Applications of Arthrospira platensis Lipid-Free Biomass in Bioremediation of Organic Dye from Industrial Textile Effluents and Its Influence on Marine Rotifer (Brachionus plicatilis)
by Ahmed E. Alprol, Ahmed M. M. Heneash, Mohamed Ashour, Khamael M. Abualnaja, Dalal Alhashmialameer, Abdallah Tageldein Mansour, Zaki Z. Sharawy, Mouhamed A. Abu-Saied and Abd El-Fatah Abomohra
Materials 2021, 14(16), 4446; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14164446 - 08 Aug 2021
Cited by 29 | Viewed by 3090
Abstract
Arthrospira platensis is one of the most important cultured microalgal species in the world. Arthrospira complete dry biomass (ACDB) has been reported as an interesting feedstock for many industries, including biodiesel production. The A. platensis by-product of biodiesel production (lipid-free biomass; LFB) is [...] Read more.
Arthrospira platensis is one of the most important cultured microalgal species in the world. Arthrospira complete dry biomass (ACDB) has been reported as an interesting feedstock for many industries, including biodiesel production. The A. platensis by-product of biodiesel production (lipid-free biomass; LFB) is a source of proteins, functional molecules, and carbohydrates, and can also be reused in several applications. The current study investigated the efficiency of ACDB and LFB in bioremediation of dye (Ismate violet 2R, IV2R) from textile effluents. In addition, the potential of ACDB and LFB loaded by IV2R as a feed for Rotifer, Brachionus plicatilis, was examined. The surface of the adsorbents was characterized by SEM, FTIR, and Raman analysis to understand the adsorption mechanism. The batch sorption method was examined as a function of adsorbent dose (0.02–0.01 g L−1), solution initial concentration (10–100 mg L−1), pH (2–10), and contact time (15–180 min). The kinetic studies and adsorption isotherm models (Freundlich, Langmuir, Tempkin, and Halsey) were used to describe the interaction between dye and adsorbents. The results concluded that the adsorption process increased with increasing ACDB and LFB dose, contact time (120 min), initial IV2R concentration (10 mg L−1), and acidity pH (2 and 6, respectively). For the elimination of industrial textile wastewater, the ACDB and LFB sorbents have good elimination ability of a dye solution by 75.7% and 61.11%, respectively. The kinetic interaction between dye and adsorbents fitted well to Langmuir, Freundlish, and Halsey models for LFB, and Langmuir for ACDB at optimum conditions with R2 > 0.9. In addition, based on the bioassay study, the ACDB and LFB loaded by IV2R up to 0.02 g L−1 may be used as feed for the marine Rotifer B. plicatilis. Full article
(This article belongs to the Special Issue Materials Design for Pollutant Sensing and Environmental Remediation)
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