LAPSE

LAPSE:2019.1468
Published Article
LAPSE:2019.1468
Detoxification of a Lignocellulosic Waste from a Pulp Mill to Enhance Its Fermentation Prospects
Tamara Llano, Natalia Quijorna, Alberto Coz
December 10, 2019
Detoxification is required for sugar bioconversion and hydrolyzate valorization within the biorefining concept for biofuel or bio-product production. In this work, the spent sulfite liquor, which is the main residue provided from a pulp mill, has been detoxified. Evaporation, overliming, ionic exchange resins, and adsorption with activated carbon or black carbon were considered to separate the sugars from the inhibitors in the lignocellulosic residue. Effectiveness in terms of total and individual inhibitor removals, sugar losses and sugar-to-inhibitor removal ratio was determined. The best results were found using the cation exchange Dowex 50WX2 resin in series with the anion exchange Amberlite IRA-96 resin, which resulted in sugar losses of 24.2% with inhibitor removal of 71.3% of lignosulfonates, 84.8% of phenolics, 82.2% acetic acid, and 100% of furfurals. Apart from exchange resins, the results of evaporation, overliming, adsorption with activated carbon and adsorption with black carbon led to total inhibitor removals of 8.6%, 44.9%, 33.6% and 47.6%, respectively. Finally, some fermentation scenarios were proposed in order to evaluate the most suitable technique or combination of techniques that should be implemented in every case.
Keywords
biorefinery, detoxification, Fermentation, inhibitors, spent sulfite liquor, sugars
Subject
Suggested Citation
Llano T, Quijorna N, Coz A. Detoxification of a Lignocellulosic Waste from a Pulp Mill to Enhance Its Fermentation Prospects. (2019). LAPSE:2019.1468
Author Affiliations
Llano T: Green Engineering and Resources Research Group (; ), Department of Chemistry and Process and Resource Engineering, University of Cantabria (UC), 39005 Santander, Cantabria, Spain;
Quijorna N: Green Engineering and Resources Research Group (; ), Department of Chemistry and Process and Resource Engineering, University of Cantabria (UC), 39005 Santander, Cantabria, Spain;
Coz A: Green Engineering and Resources Research Group (; ), Department of Chemistry and Process and Resource Engineering, University of Cantabria (UC), 39005 Santander, Cantabria, Spain; [ORCID]
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Journal Name
Energies
Volume
10
Issue
3
Article Number
E348
Year
2017
Publication Date
2017-03-11
Published Version
ISSN
1996-1073
Version Comments
Original Submission
Other Meta
PII: en10030348, Publication Type: Journal Article
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LAPSE:2019.1468
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doi:10.3390/en10030348
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Dec 10, 2019
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CC BY 4.0
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[v1] (Original Submission)
Dec 10, 2019
 
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Dec 10, 2019
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http://psecommunity.org/LAPSE:2019.1468
 
Original Submitter
Calvin Tsay
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