Seafood Processing Chitin Waste for Electricity Generation in a Microbial Fuel Cell Using Halotolerant Catalyst Oceanisphaera arctica YHY1

Sustainability

Sang-Hyun Kim¹  Yung-Hun Yang¹  Ranjit Gurav¹  Min-Ju Suh¹  Hyun-Joong Kim¹  Tae-Rim Choi¹  Hong-Ju Lee¹  Jang-Yeon Cho¹  Shashi Kant Bhatia¹  Sion Ham¹  Sun-Ki Kim²  Dong-Won Yoo³ 

[1] Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Korea;Department of Food Science and Technology, Chung-Ang University, Anseong 17546, Korea;School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Korea;

关键词: chitin;    electricity generation;    halotolerant;    microbial fuel cell;    seafood processing;   

DOI  :  10.3390/su13158508

来源: DOAJ

【 摘 要 】

In this study, a newly isolated halotolerant strain Oceanisphaera arctica YHY1, capable of hydrolyzing seafood processing waste chitin biomass, is reported. Microbial fuel cells fed with 1% chitin and 40 g L⁻¹ as the optimum salt concentration demonstrated stable electricity generation until 216 h (0.228 mA/cm²). N-acetyl-D-glucosamine (GlcNAc) was the main by-product in the chitin degradation, reaching a maximum concentration of 192.01 mg g⁻¹ chitin at 120 h, whereas lactate, acetate, propionate, and butyrate were the major metabolites detected in the chitin degradation. O. arctica YHY1 utilized the produced GlcNAc, lactate, acetate, and propionate as the electron donors to generate the electric current. Cyclic voltammetry (CV) investigation revealed the participation of outer membrane-bound cytochromes, with extracellular redox mediators partly involved in the electron transfer mechanism. Furthermore, the changes in structural and functional groups in chitin after degradation were analyzed using FTIR and XRD. Therefore, the ability of O. arctica YHY1 to utilize waste chitin biomass under high salinities can be explored to treat seafood processing brine or high salt wastewater containing chitin with concurrent electricity generation.

【 授权许可】

Unknown