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Article

Palladium-Supported Zirconia-Based Catalytic Degradation of Rhodamine-B Dye from Wastewater

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Department of Chemistry, University of Malakand, Chakdara KPK 18800, Pakistan
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Department of Chemistry, Shaheed Benazir Bhutto Women University, 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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Georges Lamaitre Center for Earth and Climate Research, Earth and Life Institute, Université Catholique de Louvain, B-1348 Louvain, Belgium
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Centro Nacional de Investigaciones Biotecnológicas, CNIB, 429 Cala Cala, Cochabamba 591 4, Bolivia
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Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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Research Centre of Biotechnology, Winogradsky Institute of Microbiology, Russian Academy of Sciences, Leninsky Prospect, 33, Build. 2, 119071 Moscow, Russia
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Department of Biochemistry, University of Malakand, Chakdara KPK 18800, Pakistan
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Department of Chemistry, College of Science, University of Bahrain, Sakhir 32038, Bahrain
*
Authors to whom correspondence should be addressed.
Academic Editor: Guang-Guo Ying
Water 2021, 13(11), 1522; https://doi.org/10.3390/w13111522
Received: 6 May 2021 / Revised: 25 May 2021 / Accepted: 26 May 2021 / Published: 28 May 2021
The catalytic activity of Pd/ZrO2 was studied in terms of the degradation of rhodamine-B dye in the presence of hydrogen peroxide. Pd/ZrO2 was prepared by impregnation method, calcined at 750 °C and characterized by XRD, SEM and EDX. The catalyst showed good catalytic activity for dye degradation at 333 K, using 0.05 g of the catalyst during 5 h. The reaction kinetics followed the pseudo-first order kinetics. The Freundlich, Langmuir and Temkin isotherms were applied to the data and the best fit was obtained with Freundlich isotherm. Thermodynamic parameters, like ΔH, ΔG and ΔS were also calculated. The negative values of ΔH (−291.406 KJ/mol) and Gibbs free energy (ΔG) showed the exothermic and spontaneous nature of the process. The positive ΔS (0.04832 KJ/mol K) value showed suitable affinity of catalyst for dye degradation. The catalyst was very stable, active and was easily separated from the reaction mixture by filtration. It can be concluded from the results that the prepared catalyst could be effectively used in dyes degradation/removal from water subjected to further validation and use for various dyes. View Full-Text
Keywords: dye; heterogeneous catalyst; rhodamine-B; thermodynamics dye; heterogeneous catalyst; rhodamine-B; thermodynamics
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MDPI and ACS Style

Jabeen, S.; Sufaid Khan, M.; Khattak, R.; Zekker, I.; Burlakovs, J.; Rubin, S.S.d.; Ghangrekar, M.M.; Kallistova, A.; Pimenov, N.; Zahoor, M.; Khan, G.S. Palladium-Supported Zirconia-Based Catalytic Degradation of Rhodamine-B Dye from Wastewater. Water 2021, 13, 1522. https://doi.org/10.3390/w13111522

AMA Style

Jabeen S, Sufaid Khan M, Khattak R, Zekker I, Burlakovs J, Rubin SSd, Ghangrekar MM, Kallistova A, Pimenov N, Zahoor M, Khan GS. Palladium-Supported Zirconia-Based Catalytic Degradation of Rhodamine-B Dye from Wastewater. Water. 2021; 13(11):1522. https://doi.org/10.3390/w13111522

Chicago/Turabian Style

Jabeen, Salma, Muhammad Sufaid Khan, Rozina Khattak, Ivar Zekker, Juris Burlakovs, Sergio S.d. Rubin, Makarand M. Ghangrekar, Anna Kallistova, Nikolai Pimenov, Muhammad Zahoor, and Gul S. Khan 2021. "Palladium-Supported Zirconia-Based Catalytic Degradation of Rhodamine-B Dye from Wastewater" Water 13, no. 11: 1522. https://doi.org/10.3390/w13111522

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