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Updated: Jul 12, 2026
Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass
Published on: April 18, 2020
A green degumming approach for lignocellulosic kenaf bast using ethanolamine deep eutectic solvent.
Yan Song1, Kai Nie2, Pingping Ji3
1College of Textile and Clothing, Dezhou University, Dezhou 253026, Shandong, China; Shandong Engineering Research Center for New Functional Bio-based Fibers and Textiles, Dezhou University, Dezhou 253026, Shandong, China; College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266000, Shandong, China.
A novel green degumming method using choline chloride-ethanolamine (ChCl-ETA) deep eutectic solvent (DES) efficiently removes gum from kenaf bast fibers. This eco-friendly process is effective for multiple cycles, showing industrial application potential.
Area of Science:
- Materials Science
- Green Chemistry
- Biomass Processing
Background:
- Traditional chemical degumming of lignocellulosic bast fibers, like kenaf, faces challenges due to high lignin content, leading to pollution and inefficiency.
- Kenaf bast fibers are valuable but require efficient processing to overcome limitations of conventional methods.
Purpose of the Study:
- To develop a novel, green, and efficient degumming method for lignocellulosic kenaf bast fibers.
- To validate the efficacy of a choline chloride-ethanolamine (ChCl-ETA) alkaline deep eutectic solvent (DES) for kenaf bast degumming.
- To determine optimal degumming conditions and assess the recyclability of the DES.
Main Methods:
- Utilized choline chloride-ethanolamine (ChCl-ETA) alkaline deep eutectic solvent (DES) for degumming kenaf bast.
- Employed chemical composition analysis, SEM, FT-IR, XRD, TG, and 2D NMR spectroscopy for validation.
- Determined optimal conditions (ChCl:ETA ratio 1:6, 120°C) based on residual gum content.
Main Results:
- The ChCl-ETA DES method demonstrated effective degumming of kenaf bast fibers.
- Optimal degumming was achieved at a 1:6 ChCl:ETA ratio and 120°C.
- Recycled ChCl-ETA DES maintained comparable degumming capacity for at least five cycles without purification.
Conclusions:
- The developed ChCl-ETA DES method offers a green and efficient alternative for kenaf bast fiber degumming.
- The process shows significant potential for industrial-scale applications due to its low pollution and high efficiency.
- The recyclability of the DES enhances its economic and environmental viability for biomass processing.
