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Ultrasound, Sonochemistry and Innovative Separation Technologies Applied to Chemical and Environmental Engineering

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A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Ultrasound Chemistry".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 7983

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Special Issue Editors

Prof. Dr. Oualid Hamdaoui

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Guest Editor

Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
Interests: hydrogen energy; energy storage and management; solar energy and its application; process modeling and simulation, advanced oxidation processes (AOPs); ultrasound and sonochemistry
Special Issues, Collections and Topics in MDPI journals

Prof. Dr. Slimane Merouani

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Guest Editor

Department of Chemical Engineering, Faculty of Process Engineering, University Salah Boubnider Constantine 3, P.O. Box 72, Constantine 25000, Algeria
Interests: hydrogen energy; ultrasonic energy; microwave energy; energy storage and management; phase change materials (PCMs); solar energy and its application; process modeling and simulation; advanced oxidation processes (AOPs); advanced reduction processes (ARPs)
Special Issues, Collections and Topics in MDPI journals

Dr. Kaouther Kerboua

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Guest Editor

Higher School of Industrial Technologies, Department of Second Cycle, P.O. Box 218, Annaba 23000, Algeria
Interests: acoustic cavitation bubble; sonochemistry; numerical modeling and simulation; advanced oxidation processes; ultrasound-assisted processes; hybridization; water and wastewater treatment

Special Issue Information

Dear Colleagues,

In the context of moving toward green processes and lowering carbon emissions related to chemical and environmental engineering, innovative separation technologies and ultrasound-assisted techniques are today being presented as promising alternatives for conventional processes in wastewater treatment, synthesis, material science, and beyond. The present Special Issue aims to gather in one place a panoply of recent innovations in separative and ultrasound-based processes applied to chemical and environmental engineering, including, for instance, adsorption, sonophysical effects, and sonochemistry. Papers dealing with theoretical approaches, numerical modeling and simulation, experimental investigations, and proofs of concept are welcome. Studies highlighting aspects of greener processes are highly encouraged. The papers published in the present Special Issue are expected to be of interest to a wide multidisciplinary scientific community, ranging in focus from chemistry, physics, and chemical and environmental engineering to material science.

Prof. Dr. Oualid Hamdaoui
Prof. Dr. Slimane Merouani
Dr. Kaouther Kerboua
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. Molecules 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 2700 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

separation technologies
ultrasound
sonoprocessing
adsorption
sonochemistry
innovation
green process

Published Papers (3 papers)

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Research

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20 pages, 4445 KiB

Open AccessArticle

Galvano-Fenton Engineering Solution with Spontaneous Catalyst’s Generation from Waste: Experimental Efficiency, Parametric Analysis and Modeling Interpretation Applied to a Clean Technology for Dyes Degradation in Water

by Hamza Ferkous, Kaouther Kerboua, Oualid Hamdaoui, Naoufel Haddour and Abdulaziz Alghyamah

Molecules 2021, 26(18), 5640; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules26185640 - 17 Sep 2021

Cited by 1 | Viewed by 1368

Abstract

In this paper, the degradation of the diazo dye naphthol blue black (NBB) using the Galvano-Fenton process is studied experimentally and numerically. The simulations are carried out based on the anodic, cathodic, and 34 elementary reactions evolving in the electrolyte, in addition to [...] Read more.

{HO}^{•}

at a constant rate of

3.35 \times 10^{7} {mol}^{- 1} \cdot m^{3} \cdot s^{- 1}

during the initiation stage of the chain reactions. The selection of the operating conditions including the pH of the electrolyte, the stirring speed, and the electrodes disposition is performed by assessing the kinetics of NBB degradation; these parameters are set to 3, 350 rpm and a parallel disposition with a 3 cm inter-electrode distance, respectively. The kinetics of

Fe (III)

in the electrolyte were monitored using the principles of Fricke dosimetry and simulated numerically. The model showed more than a 96% correlation with the experimental results in both the blank test and the presence of the dye. The effects of

H_{2} O_{2}

and

NBB

concentrations on the degradation of the dye were examined jointly with the evolution of the simulated

H_{2} O_{2}

{Fe}^{2 +}

, and

{HO}^{•}

concentrations in the electrolyte. The model demonstrated a good correlation with the experimental results in terms of the initial degradation rates, with correlation coefficients exceeding 98%. Full article

(This article belongs to the Special Issue Ultrasound, Sonochemistry and Innovative Separation Technologies Applied to Chemical and Environmental Engineering)

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Figure 1

14 pages, 3468 KiB

Open AccessArticle

A Novel Energy-from-Waste Approach for Electrical Energy Production by Galvano–Fenton Process

by Intissar Gasmi, Naoufel Haddour, Oualid Hamdaoui, Kaouther Kerboua, Abdulaziz Alghyamah and François Buret

Molecules 2021, 26(13), 4013; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules26134013 - 30 Jun 2021

Cited by 2 | Viewed by 2110

Abstract

A novel approach allowing the production of electrical energy by an advanced oxidation process is proposed to eliminate organic micropollutants (MPs) in wastewaters. This approach is based on associating the Galvano–Fenton process to the generation of electrical power. In the previous studies describing the Galvano–Fenton (GF) process, iron was directly coupled to a metal of more positive potential to ensure degradation of organic pollutants without any possibility of producing electrical energy. In this new approach, the Galvano–Fenton process is constructed as an electrochemical cell with an external circuit allowing recovering electrons exchanged during the process. In this study, Malachite Green (MG) dye was used as a model of organic pollutant. Simultaneous MG degradation and electrical energy production with the GF method were investigated in batch process. The investigation of various design parameters emphasis that utilization of copper as a low-cost cathode material in the galvanic couple, provides the best treatment and electrical production performances. Moreover, these performances are improved by increasing the surface area of the cathode. The present work reveals that the GF process has a potential to provide an electrical power density of about 200 W m⁻². These interesting performances indicate that this novel Energy-from-Waste strategy of the GF process could serve as an ecological solution for wastewater treatment. Full article

(This article belongs to the Special Issue Ultrasound, Sonochemistry and Innovative Separation Technologies Applied to Chemical and Environmental Engineering)

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Review

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19 pages, 4137 KiB

Open AccessReview

Recent Advances in Inorganic Nanomaterials Synthesis Using Sonochemistry: A Comprehensive Review on Iron Oxide, Gold and Iron Oxide Coated Gold Nanoparticles

by Mohammed Ali Dheyab, Azlan Abdul Aziz and Mahmood S. Jameel

Molecules 2021, 26(9), 2453; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules26092453 - 22 Apr 2021

Cited by 33 | Viewed by 3722

Abstract

Sonochemistry uses ultrasound to improve or modify chemical reactions. Sonochemistry occurs when the ultrasound causes chemical effects on the reaction system, such as the formation of free radicals, that intensify the reaction. Many studies have investigated the synthesis of nanomaterials by the sonochemical method, but there is still very limited information on the detailed characterization of these physicochemical and morphological nanoparticles. In this comprehensive review, recent advances in the sonochemical synthesis of nanomaterials based on iron oxide nanoparticles (Fe₃O₄NP), gold nanoparticles (AuNP) and iron oxide-coated gold nanoparticles (Fe₃O₄@Au NP) are discussed. These materials are the most studied materials for various applications, such as medical and commercial uses. This review will: (1) address the simple processing and observations on the principles of sonochemistry as a starting point for understanding the fundamental mechanisms, (2) summarize and review the most relevant publications and (3) describe the typical shape of the products provided in sonochemistry. All in all, this review’s main outcome will provide a comprehensive overview of the available literature knowledge that promotes and encourages future sonochemical work. Full article

(This article belongs to the Special Issue Ultrasound, Sonochemistry and Innovative Separation Technologies Applied to Chemical and Environmental Engineering)

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