Processing of persimmon tree pruning waste through the circular economy: Lignin nanoparticles and cellulosic ethanol production

Persimmon tree pruning waste (PTPW) was subjected to different fractionation methods and bioconversion conditions to obtain lignin nanoparticles and cellulosic ethanol. Lignins were converted into manometric structures (Ø = 150–250 nm) with a high degree of uniformity, spherical or nearly spherical...

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Bibliographic Details
Published in:	Renewable energy Vol. 238; p. 121932
Main Authors:	Mesquita, Ricardo Marchezan Farias de, Dal Prá, Júlia Caroline, Fontana, Roselei Claudete, Montipó, Sheila, Baudel, Henrique Macedo, Diebold, Eduardo, Schneider, Willian Daniel Hahn, Camassola, Marli
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-01-2025
Subjects:	Alkaline and ethanol organosolv treatment Biorefinery Dilute acid pre-treatment Diospyros kaki L Nanolignin Alkaline and ethanol organosolv treatment Dilute acid pre-treatment Biorefinery Nanolignin Diospyros kaki L
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Summary:	Persimmon tree pruning waste (PTPW) was subjected to different fractionation methods and bioconversion conditions to obtain lignin nanoparticles and cellulosic ethanol. Lignins were converted into manometric structures (Ø = 150–250 nm) with a high degree of uniformity, spherical or nearly spherical conformation, homogeneous dispersion and colloidal stability, with yields ranging from 16 % to 30 % by weight. Separate hydrolysis and fermentation of the pre-treated biomass indicated that the condition of slow acid addition followed by alkaline treatment provided a biomass more susceptible to enzymatic hydrolysis, with fermentable sugar yields above 60 % and an ethanol yield of 0.37 (g g−1). Thus, the use of PTPW to obtain lignin nanoparticles and cellulosic ethanol is feasible and results in value-added products; this study is the first in the literature to promote the use of PTPW. [Display omitted]
ISSN:	0960-1481
DOI:	10.1016/j.renene.2024.121932