MARC details
| 000 -LEADER |
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| fixed length control field |
02703nam a2200253Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251009160707.0 |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
B-21835 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
251009s9999 xx 000 0 und d |
| 245 10 - TITLE STATEMENT |
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| Title |
Wood delignification with aqueous solutions of deep eutectic solvents |
| 490 0# - SERIES STATEMENT |
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| Series statement |
Industrial Crops and Products, 160, p.113128, 2021 |
| 500 ## - GENERAL NOTE |
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| General note |
Artículo |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
The development of a sustainable wood fractionation has been a goal for the pulp and paper industries to develop a bioeconomy. The use of green solvents, in particular deep eutectic solvents (DES) has been explored to accomplish such goal. This work unveils the potential of DES aqueous solutions (at 50 wtpercent water content) as green solvents for the Eucalyptus globulus Labill. wood delignification. Aqueous solutions of propionic acid:urea - PA:U (2:1), urea:choline chloride - U:Ch[Cl] (2:1), lactic acid:choline chloride - LA:Ch[Cl] (10:1) and p-toluenesulfonic acid:choline chloride - PTSA:Ch[Cl] (1:1) were investigated. The delignification process was assisted by the addition of mineral (H2SO4 and HCl) or organic (PTSA) acids to efficiently promote wood matrix disruption and further lignin extraction. This process enabled solid pulp and lignin as separated fractions, which were characterized by analytical, optical and spectrometric methods. The influence of each DES on the morphology of cellulose fibers in solid pulp and the chemical structure of isolated lignin fractions was evaluated. The best system allowing delignification while preserving the cellulose fibers (comparable to Kraft cellulose pulp) and lignin structure was PA:U (2:1) aqueous solution with 25 wtpercent PTSA. A mild wood delignification process (363.15 K for 8 h) using this DES allowed to obtain a cellulose pulp yielding 59.50 ± 0.51 wtpercent of the initial wood mass and containing only 3.86 ± 0.10 wtpercent residual Klason lignin content. This innovative approach led to 80.64 wtpercent lignin extraction from E. globulus wood at mild conditions showing its potential for industrial application. Furthermore, 40.73 wtpercent of the initial lignin was recovered from DES liquor by a simple precipitation with water. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
DEEP EUTECTIC SOLVENTS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
WOOD DELIGNIFICATION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
CELLULOSE PULP |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
FIBERS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
LIGNIN |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
BIOREFINERY |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Soares, B.;da Costa Lopes, A. M.;Silvestre, A. J.;Pinto, P. C. R.;Freire, C. S.;Coutinho, J. A. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/16wF88kK0CQVwL0aYWbgLjqLyb8ZLJ4XD/view?usp=drive_link">https://drive.google.com/file/d/16wF88kK0CQVwL0aYWbgLjqLyb8ZLJ4XD/view?usp=drive_link</a> |
| Public note |
Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Clasificación local |
| Koha item type |
Documentos solicitados |
