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Erschienen in: Biomass Conversion and Biorefinery 3/2024

24.03.2022 | Original Article

Understanding the effect of low-concentrated protic ionic liquids (PILs) on coconut (Cocos nucifera) residues

verfasst von: Marttin Paulraj Gundupalli, Kulsum Bano, Tarun Kanti Panda, Malinee Sriariyanun, Debraj Bhattacharyya

Erschienen in: Biomass Conversion and Biorefinery | Ausgabe 3/2024

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Abstract

Concentrated protic ionic liquid (PIL) without dilution has increased saccharification efficiency due to the solubilization of hemicellulose and lignin compounds. However, concentrated PILs are not cost-effective, highly viscous, and toxic to microorganisms. The present study evaluates the effect of PILs on the solubilization of hemicellulose and lignin present in coconut coir and pith. PILs including pyridinium hydrogen sulfate [PyH][HSO4] and triethylammonium hydrogen sulfate [TEA][HSO4] were considered in this study. The sugars and lignin were partially hydrolyzed during the PIL pretreatment of coir and pith. However, the degree of biomass solubilization varied for different types of biomass and PIL. The changes in the biomass after pretreatment were studied through FTIR and XRD analysis. The yield of glucose released from [PyH][HSO4] and [TEA][HSO4] pretreated coir and pith increased 4.12, 4.73 and 7.36, and 6.44, respectively. The results showed that diluted PIL could be used in a biorefinery to increase the glucose yield with almost similar efficiency obtained from concentrated PIL. The recovery and reusability studies showed the recycled PIL could be utilized 3 times. Further application of low concentrations of PIL suggests the possibility of a new process design for a biorefinery to achieve low operating costs.
Graphical abstract

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Metadaten
Titel
Understanding the effect of low-concentrated protic ionic liquids (PILs) on coconut (Cocos nucifera) residues
verfasst von
Marttin Paulraj Gundupalli
Kulsum Bano
Tarun Kanti Panda
Malinee Sriariyanun
Debraj Bhattacharyya
Publikationsdatum
24.03.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Biomass Conversion and Biorefinery / Ausgabe 3/2024
Print ISSN: 2190-6815
Elektronische ISSN: 2190-6823
DOI
https://doi.org/10.1007/s13399-022-02572-4

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