Use of anaerobic co-digestion as an alternative to add value to sugarcane biorefinery wastes.

Autor: Adarme OFH; Environmental and Chemical Technology Group, Department of Chemistry, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Bauxita s/n, 35400-000 Ouro Preto, Brazil., Baêta BEL; Environmental and Chemical Technology Group, Department of Chemistry, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Bauxita s/n, 35400-000 Ouro Preto, Brazil., Filho JBG; Environmental and Chemical Technology Group, Department of Chemistry, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Bauxita s/n, 35400-000 Ouro Preto, Brazil., Gurgel LVA; Environmental and Chemical Technology Group, Department of Chemistry, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Bauxita s/n, 35400-000 Ouro Preto, Brazil., Aquino SF; Environmental and Chemical Technology Group, Department of Chemistry, Federal University of Ouro Preto, Campus Universitário Morro do Cruzeiro, Bauxita s/n, 35400-000 Ouro Preto, Brazil. Electronic address: sergio@ufop.edu.br.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2019 Sep; Vol. 287, pp. 121443. Date of Electronic Publication: 2019 May 08.
DOI: 10.1016/j.biortech.2019.121443
Abstrakt: In this study the anaerobic co-digestion (AcD) of sugarcane biorefinery by-products, i.e. hemicelluloses hydrolysate (HH) (obtained by hydrothermal pretreatment of sugarcane bagasse), vinasse, yeast extract (YE) and sugarcane bagasse fly ashes (SBFA), was optimized by means of biochemical methane potential experiments. The best experimental conditions of AcD (25-75% HH-to-vinasse mixture ratio; 1.0 g L -1 YE; 15 g L -1 SBFA and 100-0% HH-to-Vinasse; 1.5 g L -1 YE; 45 g L -1 SBFA) led to the production of 0.279 and 0.267 Nm 3 of CH 4 per kg of chemical oxygen demand (COD) with an energy surplus of 0.43 and 0.34 MJ kg SB -1 , respectively. Adsorption experiments using SBFA were carried out and showed this residue could adsorb up to 61.71 and 17.32 mg g -1 of 5-hydroxymethyl-2-furfuraldehyde and 2-furfuraldehyde, thereby reducing toxicity and improving biogas production.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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