EUBCE 2024 - Jiyeon PARK - Feasibility of Electrochemical Hydrolysis of Lignocellulosic Biomass for Glucose Production

Feasibility of Electrochemical Hydrolysis of Lignocellulosic Biomass for Glucose Production

Short Introductive summary

Conventional saccharification methods involve enzyme hydrolysis to produce glucose from lignocellulosic biomasses. However, glucose production from lignocellulosic biomasses faces challenges, especially regarding high enzyme cost. Therefore, this study investigated the possibility of hydrolyzing lignocellulosic biomasses by electrochemical decomposition method. This study focused on evaluating the electrochemical activity involved in breaking the ß-1,4 glycosidic bonds in cellulose during saccharification. Optimal conditions for efficient saccharification were determined by varying parameters such as electrodes(copper and iridium electrodes) and electrolytes(alkaline and acidic electrolytes). The electrochemical hydrolysis was performed in the conditions of electrolysis potential vs. SEC –1.5V~1.5V and electrolysis reaction with a constant current of 100mA (LSV conditions). The produced glucose quantity was measured using HPLC and glucose reflectometer. The results showed higher glucose productions in acidic electrolyte and Ir electrode than alkaline electrolyte and Cu electrode. This study presents the feasibility of electrochemical saccharifiication of lignocellulosic biomasses.

J.Y. Park, Korea Institute of ceramic engineering&technology, Cheongju-si, REPUBLIC OF KOREA
B.I. Sang, Chemical Engineering Department, Hanyang University, Cheongju-si, REPUBLIC OF KOREA
J.H. Lee, Korea Institute of ceramic engineering&technology, Cheongju-si, REPUBLIC OF KOREA