Investigation of the Adsorption Process of Biochar Açaí ( Euterpea olerácea Mart.) Seeds Produced by Pyrolysis

Lauro Henrique Hamoy Guerreiro, Ana Cláudia Fonseca Baia, Fernanda Paula da Costa Assunção, Gabriel de Oliveira Rodrigues, Rafael Lopes e Oliveira, Sergio Duvoisin Junior, Anderson Mathias Pereira, Erika Milene Pinto de Sousa, Nélio Teixeira Machado, Douglas Alberto Rocha de Castro and Marcelo Costa Santos ()
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Lauro Henrique Hamoy Guerreiro: Graduate Program of Chemical Engineering, Campus Profissional-UFPA, Federal University of Pará, Rua Augusto Corrêa N°1, Belém 66075-110, Brazil
Ana Cláudia Fonseca Baia: Graduate Program of Chemical Engineering, Campus Profissional-UFPA, Federal University of Pará, Rua Augusto Corrêa N°1, Belém 66075-110, Brazil
Fernanda Paula da Costa Assunção: Institute of Technology, Federal University of Pará, Rua Augusto Corrêa N°1, Belém 66075-110, Brazil
Gabriel de Oliveira Rodrigues: Faculty of Chemical Engineering, State University of Amazonas-UEA, Avenida Darcy Vargas N°1200, Manaus 69050-020, Brazil
Rafael Lopes e Oliveira: Faculty of Chemical Engineering, State University of Amazonas-UEA, Avenida Darcy Vargas N°1200, Manaus 69050-020, Brazil
Sergio Duvoisin Junior: Faculty of Chemical Engineering, State University of Amazonas-UEA, Avenida Darcy Vargas N°1200, Manaus 69050-020, Brazil
Anderson Mathias Pereira: Faculty of Agricultural Sciences, Federal University of Amazonas, Av. Gen. Rodrigo Octávio N°6200, Manaus 69080-900, Brazil
Erika Milene Pinto de Sousa: Study Group on Biomass Processing, Federal Rural University of the Amazon, Campus Capanema, Avenida Barão de Capanema, SN, Bairro Caixa D’água, Capanema 68700-665, Brazil
Nélio Teixeira Machado: Faculty of Sanitary and Environmental Engineering, Applied Chemistry Research Group, Campus Profissional-UFPA, Universidade Federal do Pará, Rua Corrêa N°1, Belém 66075-900, Brazil
Douglas Alberto Rocha de Castro: Cursos de Engenharia Química, Mecânica e Elétrica, Lutheran University Center of Manaus—CEULM/ULBRA, Avenida Carlos Drummond de Andrade N°1460, Manaus 69077-730, Brazil
Marcelo Costa Santos: Graduate Program of Chemical Engineering, Campus Profissional-UFPA, Federal University of Pará, Rua Augusto Corrêa N°1, Belém 66075-110, Brazil

Energies, 2022, vol. 15, issue 17, 1-21

Abstract: This work aims to investigate the influence of temperature and chemical impregnation in the textural and morphological composition of the bio-adsorbent of bio-adsorption via thermal cracking of the seeds of açaí. The experiments were carried out at 400 °C and 450 °C using a pilot scale reactor. The efficiency of the organic process was calculated in terms of liquid and solid products selected with a chemical impregnation process with NaOH, mainly with the liquid that had a greater product conversion. The elementary samples of the solid products occur with the occurrence of carbonization with an increase in the temperature of the process and the presence of impregnation. The textural and morphological characterization occurred with an analysis of FT-IR, SEM/EDS, XRF, and B.E.T. The in-phase product was developed through the creation of açaí seed in nature and impregnated with NaOH solution (2 M) at temperatures of 400 °C and 450 °C. The adsorption kinetics of acetic acid were investigated at 5, 10, 15, 20, 60, 120, and 180 s. The adsorption is higher at 450 °C and with the chemical impregnation of NaOH since the experiments were able to remove an amount of 317.51 mg acid/g adsorbent acetic acid. All the models analyzed fit the experiments, both for the kinetic models (pseudo-first order and pseudo-second order) and for the equilibrium models (Langmuir and Freundlich).

Keywords: açai ( Euterpe olerácea ); lignocellulosic biomass; biochar; adsorption (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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