Optimization of fenugreek seed mucilage extraction for the synthesis of a novel bio-nano composite for efficient removal of cadmium ions from aqueous environments

This research investigates the application of an innovative bio-nanocomposite, Fenugreek seed mucilage/silicon carbide (FSM/SiC), as an exceptionally effective adsorbent for eliminating cadmium ions from aqueous solutions. Optimization of fenugreek mucilage extraction involved ultrasonic methods, es...

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Bibliographic Details
Published in:International journal of biological macromolecules 2024-03, Vol.261 (Pt 2), p.129882-129882, Article 129882
Main Authors: Lindi, Ali Mohammadi, Falah, Sara, Sadeghnezhad, Mahsa, Ghorbani, Mohsen
Format: Article
Language:English
Subjects:
Adsorption
Adsorption efficiency
Bio-nanocomposite
Cadmium - chemistry
Cadmium removal
Fenugreek mucilage/silicon carbide
Hydrogen-Ion Concentration
Ions
Kinetics
Nanocomposites
Plant Extracts
Thermodynamics
Trigonella
Water - chemistry
Water decontamination
Water Pollutants, Chemical - chemistry
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Summary:This research investigates the application of an innovative bio-nanocomposite, Fenugreek seed mucilage/silicon carbide (FSM/SiC), as an exceptionally effective adsorbent for eliminating cadmium ions from aqueous solutions. Optimization of fenugreek mucilage extraction involved ultrasonic methods, establishing ideal conditions with a solid-to-solvent ratio of 1:55, 50 °C temperature, 37 kHz frequency, 100 % power, and 30 min processing time. Comprehensive characterization through FTIR spectroscopy, XRD, imaging, DLS, and SEM confirmed the preservation of crucial adsorption-related characteristics. Enhanced adsorption efficiency was achieved by systematically adjusting pH, temperature, adsorbent concentration, pollutant concentration, and contact time, identifying optimal conditions at pH 6, 0.03 g adsorbent dosage, 35 min contact time, and 30 mg/L initial cadmium concentration at 30 °C. Adsorption kinetics followed a pseudo-second-order model, while the Langmuir isotherm fit suggested monolayered adsorption. Thermodynamic analysis indicated exothermic and spontaneous Cd2+ ion adsorption onto FSM/SiC. Remarkably, FSM/SiC demonstrated exceptional regeneration potential, positioning it as a promising solution for water decontamination and environmental remediation. This research showcases FSM/SiC's potential with a maximum adsorption capacity of 41.6 mg/g for cadmium ions, highlighting its significance in addressing cadmium contamination.
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2024.129882