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

Maria Eduarda Araújo Pessoa, Karla Silvana Menezes Gadelha de Sousa, Genaro Zenaide Clericuzi, Andrea Lopes de Oliveira Ferreira, Maria Clara de Souza Soares and José Cavalcante de Queiroz Neto
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Maria Eduarda Araújo Pessoa: Chemical Engineering Department, Campus I, Federal University of Paraíba (UFPB), João Pessoa 58051-900, PB, Brazil
Karla Silvana Menezes Gadelha de Sousa: Chemical Engineering Department, Campus I, Federal University of Paraíba (UFPB), João Pessoa 58051-900, PB, Brazil
Genaro Zenaide Clericuzi: Chemical Engineering Department, Campus I, Federal University of Paraíba (UFPB), João Pessoa 58051-900, PB, Brazil
Andrea Lopes de Oliveira Ferreira: Chemical Engineering Department, Campus I, Federal University of Paraíba (UFPB), João Pessoa 58051-900, PB, Brazil
Maria Clara de Souza Soares: Chemical Engineering Department, Campus I, Federal University of Paraíba (UFPB), João Pessoa 58051-900, PB, Brazil
José Cavalcante de Queiroz Neto: Chemical Engineering Department, Campus I, Federal University of Paraíba (UFPB), João Pessoa 58051-900, PB, Brazil

Energies, 2021, vol. 14, issue 18, 1-17

Abstract: 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 N 2 , 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.

Keywords: crab shell; dye; adsorption; scale-up (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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