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Kinetic and equilibrium modeling for the biosorption of metal ion by Zeolite 13X-Algal-Alginate Beads (ZABs)


Moghaddam, Seyed Amirebrahim Emami and Harun, Mohd Razif and Mokhtar, Mohd Noriznan and Zakaria, Rabitah (2020) Kinetic and equilibrium modeling for the biosorption of metal ion by Zeolite 13X-Algal-Alginate Beads (ZABs). Journal of Water Process Engineering, 33. art. no. 101057. pp. 1-8. ISSN 2214-7144


The potential application of Zeolite 13X-Algal-Alginate Beads (ZABs) for copper biosorption was evaluated and compared with Blank-Alginate Beads (BABs) and Chlorella-Alginate Beads (CABs). Different process parameters were investigated including contact time, pH and initial metallic ion concentration. The findings indicated that the maximum biosorption capacity of ZABs was 85.88 mg/g biosorbent achieved at 180 min, pH 5 and initial metallic ion concentration of 150 mg/l whereas the maximum capacity of 70.02 and 77.32 mg/g biosorbent was obtained for BABs and CABs, respectively. ZABs showed higher stability than BABs and CABs in biosorption-desorption cycles. The kinetic and equilibrium data were analyzed via reaction/diffusion and Langmuir/Freundlich models, respectively. Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX) and Fourier transform infrared spectroscopy (FTIR) indicated bonded metal ion to the ABs. Hence, this study confirmed an improvement in stability and biosorption capacity of microalgal-alginate beads.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1016/j.jwpe.2019.101057
Publisher: Elsevier
Keywords: Zeolite 13X; Chlorella; Alginate beads; Biosorption; Kinetic and equilibrium modeling
Depositing User: Ms. Nida Hidayati Ghazali
Date Deposited: 20 Jun 2021 14:06
Last Modified: 20 Jun 2021 14:06
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.jwpe.2019.101057
URI: http://psasir.upm.edu.my/id/eprint/81171
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