title: Utilization of hydrolysate from lignocellulosic biomass pretreatment to generate electricity by enzymatic fuel cell system.
abstract: The waste hydrolysate after dilute acid pretreatment (DAP) of lignocellulosic biomass was utilized to generate electricity using an enzymatic fuel cell (EFC) system. During DAP, the components of biomass containing hemicellulose and other compounds are hydrolyzed, and glucose is solubilized into the dilute acid solution, called as the hydrolysate liquid. Glucose oxidase (GOD) and laccase (Lac) were assembled on the electrode of the anode and cathode, respectively. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were measured, and the maximum power density was found to be 1.254×10(3) μW/cm(2). The results indicate that the hydrolysate from DAP is a reliable electrolyte containing the fuel of EFC. Moreover, the impurities in the hydrolysate such as phenols and furans slightly affected the charge transfer on the surface of the electrode, but did not affect the power generation of the EFC system in principal.
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, Seongbuk-Gu, Seoul 02855, Republic of Korea. Electronic address: seanlearns@gmail.com.
authors.forename: Sung Bong
authors.initials: SB
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, Seongbuk-Gu, Seoul 02855, Republic of Korea. Electronic address: wavekds@naver.com.
authors.forename: Dong Sup
authors.initials: DS
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, Seongbuk-Gu, Seoul 02855, Republic of Korea. Electronic address: jihyun_y@naver.com.
authors.forename: Ji Hyun
authors.initials: JH
authors.lastname: Yang
authors.affiliation: Department of Plant and Food Science, Sangmyung University, Dongnam-Gu, Cheonan, Chungnam 31066, Republic of Korea. Electronic address: dorgly@smu.ac.kr.
authors.forename: Junyoung
authors.initials: J
authors.lastname: Lee
authors.affiliation: Department of Chemical and Biological Engineering, Korea University, Seongbuk-Gu, Seoul 02855, Republic of Korea. Electronic address: kimsw@korea.ac.kr.
authors.forename: Seung Wook
authors.initials: SW
authors.lastname: Kim
mesh_terms: D001674:Bioelectric Energy Sources; D018533:Biomass; D004560:Electricity; D004800:Enzymes, Immobilized / Q000378:metabolism; D005947:Glucose / Q000378:metabolism; D005949:Glucose Oxidase / Q000378:metabolism; D006868:Hydrolysis; D042845:Laccase / Q000378:metabolism; D008031:Lignin / Q000378:metabolism*; D010084:Oxidation-Reduction
chemical_list: D004800:Enzymes, Immobilized; C036909:lignocellulose; D008031:Lignin; D005949:Glucose Oxidase; D042845:Laccase; D005947:Glucose
keywords: Biosensor; Cyclic voltammetry; Dilute acid pretreatment; Enzymatic fuel cell; Power density