Lignin recovery from cocoa bean shell using microwave-assisted extraction and deep eutectic solvents
(2023) In Bioresource Technology 372.- Abstract
Lignin is the second most abundant natural polymer after cellulose, and valorisation of lignin-rich streams has attracted increasing attention recently. This paper presents a novel and sustainable method to recover lignin from Cocoa Bean Shells (CBS) using Deep Eutectic Solvents (DES) and microwaves. A DES containing p-toluenesulfonic acid, choline chloride and glycerol (2:1:1 M ratio) was selected based on its dielectric properties. Under 200 W microwave power, the optimum yield of 95.5 % lignin was achieved at 130 °C and 30 min. DES-extracted lignin exhibited unique structural characteristics including larger particle sizes (242.5 µm D50 size), structural diversity (410.4 µm D90-D10 size) and H/G sub-unit ratio (71.9 %) compared with... (More)
Lignin is the second most abundant natural polymer after cellulose, and valorisation of lignin-rich streams has attracted increasing attention recently. This paper presents a novel and sustainable method to recover lignin from Cocoa Bean Shells (CBS) using Deep Eutectic Solvents (DES) and microwaves. A DES containing p-toluenesulfonic acid, choline chloride and glycerol (2:1:1 M ratio) was selected based on its dielectric properties. Under 200 W microwave power, the optimum yield of 95.5 % lignin was achieved at 130 °C and 30 min. DES-extracted lignin exhibited unique structural characteristics including larger particle sizes (242.5 µm D50 size), structural diversity (410.4 µm D90-D10 size) and H/G sub-unit ratio (71.9 %) compared with commercial Kraft lignin (77.2 µm, 157.9 µm and 0.1 % respectively), indicating the potential of DES in the modification and upgrading of lignin for novel value-added products.
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- author
- Mao, Yujie ; Gerrow, Alex ; Ray, Ella ; Perez, Nidia Diaz ; Edler, Karen LU ; Wolf, Bettina and Binner, Eleanor
- organization
- publishing date
- 2023-03
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Deep eutectic solvents, Dielectric properties, Lignin, Microwave-assisted extraction, Waste valorisation
- in
- Bioresource Technology
- volume
- 372
- article number
- 128680
- publisher
- Elsevier
- external identifiers
-
- pmid:36706816
- scopus:85146876640
- ISSN
- 0960-8524
- DOI
- 10.1016/j.biortech.2023.128680
- language
- English
- LU publication?
- yes
- id
- 452eea2b-2df0-4f16-98d1-3d3c28751f5a
- date added to LUP
- 2023-02-10 14:50:27
- date last changed
- 2024-09-19 13:52:09
@article{452eea2b-2df0-4f16-98d1-3d3c28751f5a, abstract = {{<p>Lignin is the second most abundant natural polymer after cellulose, and valorisation of lignin-rich streams has attracted increasing attention recently. This paper presents a novel and sustainable method to recover lignin from Cocoa Bean Shells (CBS) using Deep Eutectic Solvents (DES) and microwaves. A DES containing p-toluenesulfonic acid, choline chloride and glycerol (2:1:1 M ratio) was selected based on its dielectric properties. Under 200 W microwave power, the optimum yield of 95.5 % lignin was achieved at 130 °C and 30 min. DES-extracted lignin exhibited unique structural characteristics including larger particle sizes (242.5 µm D50 size), structural diversity (410.4 µm D90-D10 size) and H/G sub-unit ratio (71.9 %) compared with commercial Kraft lignin (77.2 µm, 157.9 µm and 0.1 % respectively), indicating the potential of DES in the modification and upgrading of lignin for novel value-added products.</p>}}, author = {{Mao, Yujie and Gerrow, Alex and Ray, Ella and Perez, Nidia Diaz and Edler, Karen and Wolf, Bettina and Binner, Eleanor}}, issn = {{0960-8524}}, keywords = {{Deep eutectic solvents; Dielectric properties; Lignin; Microwave-assisted extraction; Waste valorisation}}, language = {{eng}}, publisher = {{Elsevier}}, series = {{Bioresource Technology}}, title = {{Lignin recovery from cocoa bean shell using microwave-assisted extraction and deep eutectic solvents}}, url = {{http://dx.doi.org/10.1016/j.biortech.2023.128680}}, doi = {{10.1016/j.biortech.2023.128680}}, volume = {{372}}, year = {{2023}}, }