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Updated: Jul 29, 2025
Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass
Published on: April 18, 2020
Improved production of adipic acid from a high loading of corn stover via an efficient and mild combination
Daozhu Xu1, Cuiluan Ma2, Mengjia Wu2
1School of Pharmacy, National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, PR China.
Abstract:
Adipic acid is one kind of important organic dibasic acid, which has crucial role in manufacturing plastics, lubricants, resins, fibers, etc. Using lignocellulose as feedstock for producing adipic acid can reduce production cost and improve bioresource utilization. After pretreated in the mixture of 7 wt% NaOH and 8 wt% ChCl-PEG10000 at 25 °C for 10 min, the surface of corn stover became loose and rough. The specific surface area was increased after the removal of lignin. A high loading of pretreated corn stover was enzymatically hydrolyzed by cellulase (20 FPU/g substrate) and xylanase (15 U/g substrate), and the yield of reducing sugars was as high as 75%. Biomass-hydrolysates obtained by enzymatic hydrolysis were efficiently fermented to produce adipic acid, and the yield was 0.48 g adipic acid per g reducing sugar. A sustainable approach for manufacturing adipic acid from lignocellulose via a room temperature pretreatment has great potential in future.
