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Article

Adsorption of Reactive Dye onto Uçá Crab Shell (Ucides cordatus): Scale-Up and Comparative Studies

Chemical Engineering Department, Campus I, Federal University of Paraíba (UFPB), João Pessoa 58051-900, PB, Brazil
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Academic Editor: Raf Dewil
Energies 2021, 14(18), 5876; https://doi.org/10.3390/en14185876
Received: 9 July 2021 / Revised: 24 July 2021 / Accepted: 2 August 2021 / Published: 17 September 2021
(This article belongs to the Special Issue Wastewater, Water and Energy)
The growing interest in using low-cost methods that use natural sources makes the study of adsorption processes increasingly frequent and common. Thus, the use of uçá crab shell (Ucides cordatus) in the adsorption of reactive dye (reactive blue 222) was studied in two systems (S1 and S2) in a finite bath, with a scale-up of 12 times and considering different forms of agitation. The biosorbent material was previously characterized from FTIR and EDX spectroscopies, SEM, physical adsorption of N2, and point of zero charge. The kinetic study allowed modeling the experimental data and defining the equilibrium time for the S1 system as 400 min, and the S2 system as 360 min. The equilibrium adsorption capacities are 3.623 mg·g−1 (S1) and 4.191 mg·g−1 (S2). The pseudo-second-order (PSO) model best described the experimental data. The favorable multilayer adsorption was confirmed for the isothermal analysis, and the Freundlich and Sips models represented the experimental data of S1 and S2, respectively. The results obtained are positive indications of the scale-up of the S2 system. View Full-Text
Keywords: crab shell; dye; adsorption; scale-up crab shell; dye; adsorption; scale-up
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MDPI and ACS Style

Pessoa, M.E.A.; de Sousa, K.S.M.G.; Clericuzi, G.Z.; Ferreira, A.L.d.O.; Soares, M.C.d.S.; Neto, J.C.d.Q. Adsorption of Reactive Dye onto Uçá Crab Shell (Ucides cordatus): Scale-Up and Comparative Studies. Energies 2021, 14, 5876. https://doi.org/10.3390/en14185876

AMA Style

Pessoa MEA, de Sousa KSMG, Clericuzi GZ, Ferreira ALdO, Soares MCdS, Neto JCdQ. Adsorption of Reactive Dye onto Uçá Crab Shell (Ucides cordatus): Scale-Up and Comparative Studies. Energies. 2021; 14(18):5876. https://doi.org/10.3390/en14185876

Chicago/Turabian Style

Pessoa, Maria E.A., Karla S.M.G. de Sousa, Genaro Z. Clericuzi, Andrea L.d.O. Ferreira, Maria C.d.S. Soares, and José C.d.Q. Neto 2021. "Adsorption of Reactive Dye onto Uçá Crab Shell (Ucides cordatus): Scale-Up and Comparative Studies" Energies 14, no. 18: 5876. https://doi.org/10.3390/en14185876

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