DIFFERENT TREATMENTS OF PEARL MILLET BIOMASS FOR CELLULOSE RECOVERY: EFFECTS ON LIGNOCELLULOSIC COMPOSITION

"; ALINE P. DRESCH; Department of Environmental Engineering and Technology, Federal University of Paraná, Campus Palotina, Palotina-PR, 85950-000, Brazil"; MATHEUS CAVALI; "Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis-SC, 88040-970, Brazil"; DAVID F. DOS SANTOS; "Department of Food Engineering, Federal University of Fronteira Sul, Campus Laranjeiras do Sul, BR 158 – Km 405, Laranjeiras do Sul-PR, 85301-970, Brazil"; ODINEI FOGOLARI; "Department of Sanitary and Environmental Engineering, Federal University of Fronteira Sul, Campus Chapecó, BR 484 – Km 02, Chapecó-SC, 89815-899, Brazil"; VÂNIA Z. PINTO; "Department of Food Engineering, Federal University of Fronteira Sul, Campus Laranjeiras do Sul, BR 158 – Km 405, Laranjeiras do Sul-PR, 85301-970, Brazil"; GUILHERME M. MIBIELLI; "Department of Sanitary and Environmental Engineering, Federal University of Fronteira Sul, Campus Chapecó, BR 484 – Km 02, Chapecó-SC, 89815-899, Brazil"; JOÃO P. BENDER; "Department of Sanitary and Environmental Engineering, Federal University of Fronteira Sul, Campus Chapecó, BR 484 – Km 02, Chapecó-SC, 89815-899, Brazil"

doi:10.35812/cellulosechemtechnol.2023.57.22

journal article·2023-05-10Open access

DIFFERENT TREATMENTS OF PEARL MILLET BIOMASS FOR CELLULOSE RECOVERY: EFFECTS ON LIGNOCELLULOSIC COMPOSITION

", ALINE P. DRESCH, Department of Environmental Engineering and Technology, Federal University of Paraná, Campus Palotina, Palotina-PR, 85950-000, Brazil", MATHEUS CAVALI, "Department of Sanitary and Environmental Engineering, Federal University of Santa Catarina, Florianópolis-SC, 88040-970, Brazil", DAVID F. DOS SANTOS, "Department of Food Engineering, Federal University of Fronteira Sul, Campus Laranjeiras do Sul, BR 158 – Km 405, Laranjeiras do Sul-PR, 85301-970, Brazil", ODINEI FOGOLARI, "Department of Sanitary and Environmental Engineering, Federal University of Fronteira Sul, Campus Chapecó, BR 484 – Km 02, Chapecó-SC, 89815-899, Brazil", VÂNIA Z. PINTO, "Department of Food Engineering, Federal University of Fronteira Sul, Campus Laranjeiras do Sul, BR 158 – Km 405, Laranjeiras do Sul-PR, 85301-970, Brazil", GUILHERME M. MIBIELLI, "Department of Sanitary and Environmental Engineering, Federal University of Fronteira Sul, Campus Chapecó, BR 484 – Km 02, Chapecó-SC, 89815-899, Brazil", JOÃO P. BENDER, "Department of Sanitary and Environmental Engineering, Federal University of Fronteira Sul, Campus Chapecó, BR 484 – Km 02, Chapecó-SC, 89815-899, Brazil"

Cellulose Chemistry and Technology· Volume 57· Issue 3-4

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Source abstract

Abstract

The objective of this study was to recover cellulose from pearl millet biomass through chemical (alkaline and acidic) pretreatments.The cellulosic fraction was characterized by Fourier transform spectroscopy (FTIR), X-ray diffraction (XRD), and Raman spectroscopy.The cellulose-rich fraction presented 100% and 99.86% of lignin and hemicelluloses removal, respectively, and a high crystallinity index of 82.43% after two 4-hour alkaline extractions with 4% NaOH, followed by 2 h extraction with 5% C2H2O4 in an autoclave at a temperature of 125.6 °C and 1.4 bar.According to the FTIR, XRD, and Raman spectroscopy analyses, the removal of hemicelluloses and lignin from pearl millet biomass was confirmed, which indicated the efficiency of the pretreatments evaluated.Therefore, the results presented in this study should contribute to improving the efficiency of the fractionation processes of lignocellulosic biomasses.

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Research context

OpenAlex topics: Biofuel production and bioconversion · Advanced Cellulose Research Studies · Catalysis for Biomass Conversion

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