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Article

Adsorption Kinetics and Isotherm Study of Basic Red 5 on Synthesized Silica Monolith Particles

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Department of Chemistry, University of Malakand, Chakdara Dir Lower 18800, Pakistan
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National Center of Excellence in Physical Chemistry (NCE), University of Peshawar, Peshawar 25000, Pakistan
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Institute of Chemistry, University of Tartu, 14a Ravila St., 50411 Tartu, Estonia
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Institute of Forestry and Rural Engineering, Estonian University of Life Sciences, 5 Kreutzwaldi St., 51014 Tartu, Estonia
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Winogradsky Institute of Microbiology, Research Centre of Biotechnology of the Russian Academy of Sciences, Winogradsky Institute of Microbiology, Leninsky Prospect, 33, Build. 2, 119071 Moscow, Russia
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Graduate School of Renewable Energy, Darma Persadha University, Jl. Taman Malaka, Selatan, East Jakarta Timur, Capital Special. Region, Jakarta 13450, Indonesia
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Department of Agriculture Science, University of Muhammadiyah Malang, Malang 65145, Indonesia
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Unit of Built Environment and Environmental Science, Department of Urban Studies, Malmö University, 211 19 Malmö, Sweden
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Department of Biochemistry, University of Malakand, Chakdara Dir Lower 18800, Pakistan
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Authors to whom correspondence should be addressed.
Academic Editor: Jean-Luc Probst
Water 2021, 13(20), 2803; https://doi.org/10.3390/w13202803
Received: 3 September 2021 / Revised: 6 October 2021 / Accepted: 7 October 2021 / Published: 9 October 2021
(This article belongs to the Special Issue Efficient Catalytic and Microbial Treatment of Water Pollutants)
The Silica monolith particles (SMP) were prepared from Tetra-Methyl-Ortho-Silicate (TMOS) and characterized by Fourier transforms infrared (FTIR), Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and surface area analyzer. FTIR analysis showed the Si−O stretching confirming SMP formation. SEM analysis provided information about the mean diameter of SMP (1−5 µm). EDX confirmed the presence of silicon and oxygen in the SMP. Moreover, the calculated surface area for SMP was found to be around 367 m2/g, whereas BJH pore size distributed particles were 87.15 along with the total pore volume and pore radius of 0.073 cm3/g and 16.627 Å, respectively. Besides, the removal efficiency was found to be about 96%. Various kinetic equations were used to calculate the adsorption parameters. Overall, the results show that the most appropriate model for the kinetics data was the pseudo-second order kinetics model while the mechanism of adsorption was best explained by the Langmuir isotherm. The highest removal of Basic Red 5 dye after 120 min at 298 K was 576 mg/g. Moreover, the thermodynamics parameters (Enthalpy, Gibb’s energy, and Entropy) were also estimated. The ΔH° (0.995 kJ/mol) value depicted the endothermic nature of the process. The non-spontaneous aspect of the process was evident from the ΔG° values which were 60.431, 328.93, and 339.5 kJ/mol at 293, 303, and 313 K, respectively. From the high removal efficiency value, it can be concluded that the prepared adsorbent can be a potential adsorbent in the reclamation of dyes from wastewater. View Full-Text
Keywords: silica monolith particles; surface area analyzer; thermodynamics parameter; adsorption silica monolith particles; surface area analyzer; thermodynamics parameter; adsorption
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MDPI and ACS Style

Alam, S.; Ullah, B.; Khan, M.S.; Rahman, N.u.; Khan, L.; Shah, L.A.; Zekker, I.; Burlakovs, J.; Kallistova, A.; Pimenov, N.; Yandri, E.; Hendroko Setyobudi, R.; Jani, Y.; Zahoor, M. Adsorption Kinetics and Isotherm Study of Basic Red 5 on Synthesized Silica Monolith Particles. Water 2021, 13, 2803. https://doi.org/10.3390/w13202803

AMA Style

Alam S, Ullah B, Khan MS, Rahman Nu, Khan L, Shah LA, Zekker I, Burlakovs J, Kallistova A, Pimenov N, Yandri E, Hendroko Setyobudi R, Jani Y, Zahoor M. Adsorption Kinetics and Isotherm Study of Basic Red 5 on Synthesized Silica Monolith Particles. Water. 2021; 13(20):2803. https://doi.org/10.3390/w13202803

Chicago/Turabian Style

Alam, Sultan, Barkat Ullah, Muhammad S. Khan, Najeeb u. Rahman, Luqman Khan, Luqman A. Shah, Ivar Zekker, Juris Burlakovs, Anna Kallistova, Nikolai Pimenov, Erkata Yandri, Roy Hendroko Setyobudi, Yahya Jani, and Muhammad Zahoor. 2021. "Adsorption Kinetics and Isotherm Study of Basic Red 5 on Synthesized Silica Monolith Particles" Water 13, no. 20: 2803. https://doi.org/10.3390/w13202803

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