Modified Composite Based on Magnetite and Polyvinyl Alcohol: Synthesis, Characterization, and Degradation Studies of the Methyl Orange Dye from Synthetic Wastewater

Cristina Modrogan; Simona Cǎprǎrescu; Annette Madelene Dǎncilǎ; Oanamari Daniela Orbuleț; Alexandru Mihai Grumezescu; Violeta Purcar; Valentin Radițoiu; Radu Claudiu Fierascu

doi:10.3390/polym13223911

Polymers (Nov 2021)

Modified Composite Based on Magnetite and Polyvinyl Alcohol: Synthesis, Characterization, and Degradation Studies of the Methyl Orange Dye from Synthetic Wastewater

Cristina Modrogan,
Simona Cǎprǎrescu,
Annette Madelene Dǎncilǎ,
Oanamari Daniela Orbuleț,
Alexandru Mihai Grumezescu,
Violeta Purcar,
Valentin Radițoiu,
Radu Claudiu Fierascu

Affiliations

Cristina Modrogan: Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania
Simona Cǎprǎrescu: Inorganic Chemistry, Physical Chemistry and Electrochemistry Department, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania
Annette Madelene Dǎncilǎ: Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania
Oanamari Daniela Orbuleț: Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania
Alexandru Mihai Grumezescu: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania
Violeta Purcar: National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, Splaiul Independentei, No. 202, 060021 Bucharest, Romania
Valentin Radițoiu: National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, Splaiul Independentei, No. 202, 060021 Bucharest, Romania
Radu Claudiu Fierascu: Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania

DOI: https://doi.org/10.3390/polym13223911
Journal volume & issue: Vol. 13, no. 22
p. 3911

Abstract

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The goal of the present paper was to synthesize, characterize, and evaluate the performance of the modified composite based on magnetite (Fe3O4) and polyvinyl alcohol (PVA). The obtained composite was used to degrade Methyl Orange dye from synthetic wastewater by a laboratory photocatalytic reactor. Various parameters of the photodegradation process were tested: composite dosage, amount of hydrogen peroxide (H2O2), and pH. The composite was characterized by Fourier Transform Infrared (FTIR) Spectroscopy, X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). The degradation experiments indicated that the complete dye decolorization depended on the amount of H2O2. In addition, the H2O2 could accelerate Methyl Orange degradation to more highly oxidized intermediates in the presence of UV light (99.35%). The results suggested that the obtained modified composite could be used to treat wastewater containing various types of dyes.

Published in Polymers

ISSN: 2073-4360 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Organic chemistry
Website: http://www.mdpi.com/journal/polymers/

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