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Valorization of Material Wastes for Environmental, Energetic and Biomedical Applications...
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Valorization of Material Wastes for Environmental, Energetic and Biomedical Applications II

A special issue of Eng (ISSN 2673-4117).

Deadline for manuscript submissions: closed (24 February 2023) | Viewed by 2222

Special Issue Editor

Prof. Dr. Antonio Gil Bravo

E-Mail Website
Guest Editor
INAMAT^2-Departamento de Ciencias, Edificio de los Acebos, Universidad Pública de Navarra, Campus de Arrosadía, 31006 Pamplona, Spain
Interests: preparation, characterization, and catalytic activity of metal-supported catalysts; surface properties of solids; pollutants adsorption; environmental management; industrial waste valorization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of materials from industrial wastes has attracted the attention of the research community for years. The physico-chemical characteristics have specific impacts on the material properties and the materials are applied in environmental, energetic and biomedical areas as pollutant removal, CO2 capture, energy storage, catalytic oxidation and reduction processes, the conversion of biomass to biofuels, and drug delivery. Examples of materials are activated carbons, clays, zeolites, among others. The aim of this Special Issue is to collect the recent advances and progresses developed, considering valorised materials from industrial wastes and their applications in environmental, energetic and biomedical areas.

Prof. Dr. Antonio Gil Bravo
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. Eng is an international peer-reviewed open access quarterly 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 1200 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

  • activated carbons
  • clays
  • hydrotalcite-like compounds
  • metal-organic frameworks (MOFs)
  • nanoporous materials
  • ordered mesoporous materials: pillared interlayered clays (PILCs)
  • polymers
  • zeolites and zeolite-like materials
  • adsorption applications
  • air pollution control: catalytic applications
  • energy storage
  • purification/separation of gases and liquids
  • removal of pollutants
  • sensors
  • wastewater treatment

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Published Papers (1 paper)

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Research

10 pages, 1339 KiB  
Article
Preparation and Physicochemical Characterization of Biodiesel from Recycled Vegetable Oil in Cuenca, Ecuador by Transesterification Catalyzed by KOH and NaOH
by Jennifer Ramírez, Lourdes Buestán, Eduardo Alberto López-Maldonado and Verónica Pinos-Vélez
Eng 2023, 4(1), 954-963; https://doi.org/10.3390/eng4010056 - 09 Mar 2023
Cited by 2 | Viewed by 1684
Abstract
Due to the environmental impact of using fossil fuels, alternatives for the generation of biofuels are being studied. An option for this problem is to obtain biodiesel from recycled vegetable oil. Studies show that basic homogeneous catalysis has advantages such as speed over [...] Read more.
Due to the environmental impact of using fossil fuels, alternatives for the generation of biofuels are being studied. An option for this problem is to obtain biodiesel from recycled vegetable oil. Studies show that basic homogeneous catalysis has advantages such as speed over other types of catalysis. However, most of these studies are conducted with unused or little-used oils. Therefore, this study aims to obtain biodiesel from recycled vegetable oil collected from municipal oil collection centers by transesterification applying NaOH or KOH as catalysts. The used oil was filtered, washed, and dried to remove impurities. The transesterification reaction catalyzed with NaOH and KOH was carried out; each catalyst was tested at two concentrations: 0.5% and 1% w/w. All reactions were carried out at 55 °C, 350 rpm, methanol, and alcohol/oil ratio of 6/1 for 1.5 h. The best yield was found with the KOH with a concentration of 0.5%. The biodiesel obtained presented the following properties: density of 0.8807 g/mL, a viscosity of 4.694 mm2/s, an acid number of 0.355 mg KOH/g, and corrosion 1a, a calorific value of 39,726 J/g, and a FAME of 93%. Full article
(This article belongs to the Special Issue Valorization of Material Wastes for Environmental, Energetic and Biomedical Applications II)
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