Detoxification of a Lignocellulosic Waste from a Pulp Mill to Enhance Its Fermentation Prospects

Author

Tamara Llano (tamara.llano@unican.es), Natalia Quijorna(natalia.quijorna.kyburz@gmail.com) and Alberto Coz (coza@unican.es)
Additional contact information

Energies, 2017, vol. 10, issue 3, pages 1-18

Abstract: 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 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: Add references at CitEc
Citations Track citations by RSS feed

Downloads: (external link)
http://www.mdpi.com/1996-1073/10/3/348/pdf (application/pdf)
http://www.mdpi.com/1996-1073/10/3/348/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link:http://EconPapers.repec.org/RePEc:gam:jeners:v:10:y:2017:i:3:p:348-:d:92823

Access Statistics for this article

Energies is currently edited by Prof. Dr. Enrico Sciubba

More articles in Energies from  MDPI, Open Access Journal
Series data maintained by XML Conversion Team (xml-conversion@mdpi.com).

For further details log on website :
http://econpapers.repec.org/article/gamjeners/v_3a10_3ay_3a2017_3ai_3a3_3ap_3a348-_3ad_3a92823.htm