Eco-friendly Biopolymer/Activated Charcoal Magnetic Nanocomposites with Enhanced Stability and Adsorption Properties for Water Treatment Applications

Despite the effectiveness of activated carbon as an adsorbent for many contaminants in water, it suffers from poor handling and regeneration along with difficulty of separation from water after application. Our research aims to develop activated carbon-based adsorbents with enhanced stability and ad...

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Bibliographic Details
Published in:Journal of polymers and the environment 2023-12, Vol.31 (12), p.5338-5354
Main Authors: Farghal, Hebatullah H., Nebsen, Marianne, El-Sayed, Mayyada M.H.
Format: Article
Language:English
Subjects:
Activated carbon
Activated charcoal
Adsorbents
Adsorption
Binary systems
Biopolymers
Charcoal
Chemistry
Chemistry and Materials Science
Contaminants
Distilled water
Drinking water
Drugs
Environmental Chemistry
Environmental Engineering/Biotechnology
Famotidine
Fluoxetine
High performance liquid chromatography
Industrial Chemistry/Chemical Engineering
Liquid chromatography
Magnetic properties
Magnetite
Materials Science
Nanocomposites
Original Paper
Pectin
Polymer Sciences
Stability
Thermogravimetric analysis
Water pollution
Water treatment
Xylan
Zeta potential
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Summary:Despite the effectiveness of activated carbon as an adsorbent for many contaminants in water, it suffers from poor handling and regeneration along with difficulty of separation from water after application. Our research aims to develop activated carbon-based adsorbents with enhanced stability and adsorption properties through incorporating biopolymers such as xylan and pectin and coating them over magnetite. The mesoporous adsorbents, as measured by Brunauer–Emmett–Teller analyzer, successfully adsorbed the pharmaceutical emerging contaminants of fluoxetine and famotidine with respective maximum adsorption capacities of 90.9, 42.9 mg/g for the xylan-incorporated nanocomposite, and 114.9, 53.5 mg/g for the pectin-incorporated ones, which are the highest capacities reported for these drugs to date. Thermogravimetric analysis and zeta potential measurements in acidic and basic media showed superior thermal and chemical stability for the developed nanocomposites over bare activated charcoal coated magnetite. Incorporating the biopolymers improved the regenerability of the nanocomposites, as confirmed by estimating the equilibrium dissociation constants. High Performance Liquid Chromatography measurements on adsorption in binary systems of the two drugs in distilled water and spiked tap water showed a decrease in percent removal compared to single systems owing to competitive adsorption between the two drugs. Graphical Abstract
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-023-02959-y