Title: Zeolitic Imidazolate Framework-8 as promising nanoparticles for arsenic removal from aqueous solution

Authors: Parwathi Pillai; Swapnil Dharaskar

Addresses: Nano-Research Group, Department of Chemical Engineering, School of Technology, Pandit Deendayal Energy University, Raisin, Gandhinagar, Gujarat – 382426, India ' Nano-Research Group, Department of Chemical Engineering, School of Technology, Pandit Deendayal Energy University, Raisin, Gandhinagar, Gujarat – 382426, India

Abstract: Removal of arsenic from water is an important task as it is harmful and toxic. In the current paper, Zeolitic Imidazolate Framework-8 nanoparticles were synthesised, and arsenic removal efficiency was examined from synthetic water. The optimum experiment value was developed by the Taguchi method, and the characterisation of nanoparticles was done by transmission electron microscope, which confirmed the particle. The result indicates that time was considered as an important factor in arsenic removal by ZIF-8 NPs followed by adsorbent dosage, stirring rate, temperature, and pH. The optimum conditions for arsenic removal by ZIF-8 NPs were found as time = 5 min, adsorbent dosage 0.06 g/l, Stirring = 400 RPM, temperature = 15°C, pH = 8. Regression analysis (R² = 0.90) displayed a better outcome in predicted and experimental values. The outcome estimates that the adsorption of arsenic follows Langmuir isotherm for arsenic removal.

Keywords: adsorption; arsenic removal; nanoparticles; Zeolitic Imidazolate Framework-8; Taguchi method; optimisation parameters; transmission electron microscope.

DOI: 10.1504/IJNT.2021.116162

International Journal of Nanotechnology, 2021 Vol.18 No.5/6/7/8, pp.414 - 426

Published online: 12 Jul 2021 *

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