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2024 Technical Program

Processing

Session: Enhancing Efficiency and Quality through Processing Optimization: Strategies and Applications II

2,3-Butanediol Production from Lignocellulosic Hydrolysates and Separation from Fermentation Broth as a Recoverable Platform Chemical for Sustainable Aviation Fuel Applications

Wednesday, May 1, 2024

11:15 AM – 11:35 AM EDT

Room: 518c

Presenting Author(s)

Ryan J. Stoklosa (he/him/his)

Research Chemical Engineer
USDA-ARS
Wyndmoor, Pennsylvania, United States

Co-Author(s)

RL

Renee J. Latona (she/her/hers)

Chemist
USDA-ARS
Wyndmoor, Pennsylvania, United States
VG

Valerie Garcia-Negron (she/her/hers)

Research Chemical Engineer
USDA-ARS
Wyndmoor, Pennsylvania, United States
CY

Chang Geun Yoo

Assistant Professor
State University of New York College of Environmental Science and Forestry, United States
SJ

Soyeon Jeong

Postdoctoral Research Associate
State University of New York College of Environmental Science and Forestry, United States

Abstract:

The production of an intermediate platform chemical by fermentation followed by catalytic upgrading is one proposed route for the generation of sustainable aviation fuel (SAF). This work builds upon ongoing research that is generating the high-value platform chemical 2,3-butanediol (2,3-BDO) from pretreated lignocellulose using a fermentation process with Paenibacillus polymyxa. Hydrolysates from pretreated lignocellulose were shown to be successfully fermented with P. polymyxa without detoxification and could produce up to 43 g/L of 2,3-BDO using batch processing. The resulting 2,3-BDO in the fermentation broth must then undergo separation and recovery for utilization in downstream SAF applications. This work took fermentation broths from different pretreated lignocellulosic hydrolysates that contained 2,3-BDO and subjected them to biphasic separation by combining different ratios of inorganic salts and organic solvents. Several inorganic salt/organic solvent systems were tested to determine separation parameters such as partition coefficients and 2,3-BDO yield in the organic solvent layer. One of the key findings for using this separation process is that higher inorganic salt content will reduce the total volume of organic solvent addition while maintaining greater than 90% recovery yields of 2,3-BDO.