Removal of Cd(II) from water using zero valent iron/copper functionalized spent tea

Zero valent Fe/Cu functionalized spent tea adsorbent was prepared for the decontamination of Cd(II) contaminated water. The synthesized material was characterized for structural and morphological characteristics using various analytical techniques. The material was used as adsorbent for the adsorpti...

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Bibliographic Details
Published in:Water science and technology 2020-12, Vol.82 (11), p.2552-2561
Main Authors: Malook, Khan, Khan, Hamayun
Format: Article
Language:English
Subjects:
Adsorbates
Adsorbents
Adsorption
Agricultural pollution
Analytical methods
Aqueous solutions
Cadmium
Copper
Decontamination
Fourier transforms
Hydrogen-Ion Concentration
Iron
Kinetics
Membrane separation
Metals
Nanoparticles
Pesticides
Physical characteristics
Pollutants
Removal
Tea
Water
Water Pollutants, Chemical
Water pollution
Water Purification
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Summary:Zero valent Fe/Cu functionalized spent tea adsorbent was prepared for the decontamination of Cd(II) contaminated water. The synthesized material was characterized for structural and morphological characteristics using various analytical techniques. The material was used as adsorbent for the adsorption of Cd(II) from aqueous solutions in batch study experiments. The effect of initial pH, adsorbent dosage, contact time and adsorbate concentration was investigated. The obtained data well followed the Langmuir adsorption isotherm model and pseudo-second order rate model with maximum adsorption capacity of 89.686 mg·g . Based on Langmuir separation factor (R), having a value of 0.706-0.194, the adsorption process was confirmed to be favorable. The adsorbent was used in the form of a column for the sorption of Cd(II) from a running solution with satisfactory results. The spent material was regenerated and reutilized with reduction of adsorption capacity by 1.48% only. Overall, the current adsorbent can be efficiently utilized for the removal of aqueous Cd(II).
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2020.527