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Selective removal of phenolic lignin derivatives enables sugars recovery from wood prehydrolysis liquor with remarkable yield.
- Source :
-
Bioresource technology [Bioresour Technol] 2014 Dec; Vol. 174, pp. 198-203. Date of Electronic Publication: 2014 Oct 13. - Publication Year :
- 2014
-
Abstract
- The specific elimination of lignin derivatives from wood hydrolysate without sugar loss has great practical significance to biorefinery and bioenergy. In the present study, a process consisting of calcium hydroxide and anion exchange resin treatments was developed for the purpose of selective removal of lignin from wood prehydrolysis liquor (PHL). Particular emphasis was made on the ionization of phenolic lignin, and the subsequent binding to metallic salts. It was observed that phenolic hydroxyl groups (PhOH) in lignin played an important role in lignin removal. The results showed that up to 95.2% lignin was removed from PHL with 78.8% sugar recovery. This suggested that the proposed process is highly specific to lignin, and therefore can be envisaged as a great contribution to wood-sugar production or bioenergy conversion.<br /> (Copyright © 2014 Elsevier Ltd. All rights reserved.)
- Subjects :
- Alkalies pharmacology
Anion Exchange Resins
Calcium Compounds pharmacology
Electric Conductivity
Hydrogen-Ion Concentration
Hydrolysis drug effects
Ions
Metals pharmacology
Oxides pharmacology
Populus chemistry
Static Electricity
Temperature
Carbohydrates isolation & purification
Lignin isolation & purification
Phenols isolation & purification
Waste Disposal, Fluid
Wood chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 174
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 25463800
- Full Text :
- https://doi.org/10.1016/j.biortech.2014.10.025