Direct Extraction of Uniform Lignin Microspheres from Bamboo Using a Polyol-Based Deep Eutectic Solvent

Cheng, Jinyuan; Huang, Chen; Liu, Xuze; Zhou, Xuelian; Zhan, Yunni; Chen, Tingjun; Huang, Caoxing; Meng, Xianzhi; Fang, Guigan; Ragauskas, Arthur J.

doi:10.1021/acssuschemeng.3c02344

Direct Extraction of Uniform Lignin Microspheres from Bamboo Using a Polyol-Based Deep Eutectic Solvent

Journal Article · Wed Jun 28 00:00:00 EDT 2023 · ACS Sustainable Chemistry & Engineering

DOI:https://doi.org/10.1021/acssuschemeng.3c02344· OSTI ID:1997722

Cheng, Jinyuan ^[1]; Huang, Chen ^[1]; Liu, Xuze ^[1]; Zhou, Xuelian ^[1]; Zhan, Yunni ^[1]; Chen, Tingjun ^[1]; Huang, Caoxing ^[2]; ^[3]; Fang, Guigan ^[1]; ^[4]

Chinese Academy of Forestry (CAF), Nanjing (China)
Nanjing Forestry University (China)
University of Tennessee, Knoxville, TN (United States)
University of Tennessee, Knoxville, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Conventional preparation of lignin micro-/nano-particles (LMNPs) often needs multiple steps accompanied by high cost, low efficiency, and low yield. Herein, this study established a polyhydric alcohol-based deep eutectic solvent (PA-DES) fractionation for direct LMNP assembly from raw lignocellulose. The results indicated that lignin was significantly extracted by 41.55–70.33% depending on the PA-DES varieties. With lignin removal, the substrate showed high glucan enzymatic saccharification from 70.44 to 100%. Specially, over 90% lignin could be recovered in each PA-DES, and the obtained LMNPs showed quite uniform spherical morphology with a tunable size of 550–3254 nm and narrow polydispersity index (PDI) of 0.295–0.398. The proposed DES showed a near theoretical recovery yield, which still featured excellent fractionation performance even after three cycles of reuse. In conclusion, the findings highlight the simultaneous utilization of cellulose and lignin in a one-pot biomass fractionation under mild conditions with sugars and LMNPs as the coproducts.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: Jiangsu Province Key Laboratory of Biomass Energy and Materials (JSBEM); National Natural Science Foundation of China (NSFC); USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1997722

Journal Information:: ACS Sustainable Chemistry & Engineering, Journal Name: ACS Sustainable Chemistry & Engineering Journal Issue: 27 Vol. 11; ISSN 2168-0485

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
Biopolymers
Cellulose
Fractionation
Organic polymers
Polyhydric alcohol
Pretreatment
deep eutectic solvent
lignin micro-/nano-particles

Direct Extraction of Uniform Lignin Microspheres from Bamboo Using a Polyol-Based Deep Eutectic Solvent

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