Detoxification of sisal bagasse hydrolysate using activated carbon produced from the gasification of açaí waste

Bruna Figueiredo do Nascimento; Caroline Maria Bezerra de Araujo; Alisson Castro do Nascimento; Flávio Luiz Honorato da Silva; Débora Jamila Nóbrega de Melo; Emerson Freitas Jaguaribe; Jorge Vinicius Fernandes Lima Cavalcanti; Mauricio Alves da Motta Sobrinho

doi:10.1016/j.jhazmat.2020.124494

Detoxification of sisal bagasse hydrolysate using activated carbon produced from the gasification of açaí waste

J Hazard Mater. 2021 May 5:409:124494. doi: 10.1016/j.jhazmat.2020.124494. Epub 2020 Nov 6.

Authors

Bruna Figueiredo do Nascimento¹, Caroline Maria Bezerra de Araujo², Alisson Castro do Nascimento³, Flávio Luiz Honorato da Silva⁴, Débora Jamila Nóbrega de Melo⁵, Emerson Freitas Jaguaribe⁶, Jorge Vinicius Fernandes Lima Cavalcanti³, Mauricio Alves da Motta Sobrinho³

Affiliations

¹ Chemical Engineering Department, Universidade Federal de Pe rnambuco (UFPE), Rua Prof. Arthur de Sá, s/n, Cidade Universitária, 50740-521 Recife, PE, Brazil. Electronic address: figueiredoeq@gmail.com.
² Chemical Engineering Department, Universidade Federal de Pe rnambuco (UFPE), Rua Prof. Arthur de Sá, s/n, Cidade Universitária, 50740-521 Recife, PE, Brazil; Chemical Engineering Department, Faculty of Engineering of the University of Porto (FEUP - UPorto), R. Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
³ Chemical Engineering Department, Universidade Federal de Pe rnambuco (UFPE), Rua Prof. Arthur de Sá, s/n, Cidade Universitária, 50740-521 Recife, PE, Brazil.
⁴ Food Engineering Department, Universidade Federal da Paraíba (UFPB), Campos Universitário 1, W/N, 58051-900 João Pessoa, PB, Brazil.
⁵ Chemical Engineering Department, Universidade Federal da Paraíba (UFPB), Campos Universitário 1, W/N, 58051-900 João Pessoa, PB, Brazil.
⁶ Mechanical Engineering Department, Universidade Federal da Paraíba (UFPB), Campos Universitário 1, W/N, 58051-900 João Pessoa, PB, Brazil.

PMID: 33309384
DOI: 10.1016/j.jhazmat.2020.124494

Abstract

Due to its recalcitrance and difficult disruption, biomass requires severe treatment conditions to produce bioproducts. These processes also generate substances that inhibit microbial metabolism, resulting in low conversion of sugars into bioproducts. To minimize this, in this work the sisal bagasse acid hydrolysate was detoxified using the activated carbon obtained from residues of the gasification of açaí endocarp. The adsorbent properties were analyzed, and the effects of experimental parameters related to furfural adsorption were evaluated. Then, the validation of the adsorption experiments was carried out in acid hydrolyzed liquor from sisal bagasse, the fermentation tests being performed with Saccharomyces cerevisiae. Overall, the furfural adsorption in the activated carbon was fast since most of the furfural was removed in the first minutes of the experiment. The Sips isotherm fit the experimental data best, with maximum adsorption capacity of 48.02 mg.g^-1. Kinetic data fitted LDF, QDF and FD models, and diffusivity parameters were obtained. After detoxification, the activated carbon from açaí waste removed 52% of furfural, 100% of HMF and 40.4% of acetic acid with moderate loss of sugars (17%). The results confirmed that the adsorbent is effective and promising for removing furfural and other fermentation inhibitors.

Keywords: Adsorption; Açaí endocarp; Biomass; Detoxification; Sisal hydrolysate.

Publication types

Research Support, Non-U.S. Gov't