Next Article in Journal
Energy Consumption, Economic Growth, and CO2 Emissions in G20 Countries: Application of Adaptive Neuro-Fuzzy Inference System
Next Article in Special Issue
Improved Microbial Electrolysis Cell Hydrogen Production by Hybridization with a TiO2 Nanotube Array Photoanode
Previous Article in Journal
On the Potential of Power Generation from Thermoelectric Generators in Gas Turbine Combustors
Previous Article in Special Issue
Bioelectrochemical Enhancement of Biogenic Methane Conversion of Coal
Article

Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System

School of Chemical and Biomolecular Engineering, Pusan National University, 63 Busandeahak-ro, Geumjeong-Gu, Busan 46241, Korea
*
Author to whom correspondence should be addressed.
Energies 2018, 11(10), 2770; https://doi.org/10.3390/en11102770
Received: 1 September 2018 / Revised: 3 October 2018 / Accepted: 7 October 2018 / Published: 16 October 2018
(This article belongs to the Special Issue Microbial Fuel Cells 2018)
The conversion of C1 gas feedstock, such as carbon monoxide (CO), to useful platform chemicals has attracted considerable interest in industrial biotechnology. One conversion method is electrode-based electron transfer to microorganisms using bioelectrochemical systems (BESs). In this BES system, acetate is the predominant component of various volatile fatty acids (VFAs). To appropriately separate and concentrate the acetate produced, a BES-type electrodialysis cell with an anion exchange membrane was constructed and evaluated under various operational conditions, such as applied external current, acetate concentration, and pH. A high acetate flux of 23.9 mmol/m2∙h was observed under a −15 mA current in an electrodialysis-based bioelectrochemical system. In addition, the initial acetate concentration affected the separation efficiency and transportation rate. The maximum flux appeared at 48.6 mmol/m2∙h when the acetate concentration was 100 mM, whereas the effects of the initial pH of the anolyte were negligible. The acetate flux was 14.9 mmol/m2∙h when actual fermentation broth from BES-based CO fermentation was used as a catholyte. A comparison of the synthetic broth with the actual fermentation broth suggests that unknown substances and metabolites produced from the previous bioconversion process interfere with electrodialysis. These results provide information on the optimal conditions for the separation of VFAs produced by C1 gas fermentation through electrodialysis and a combination of a BES and electrodialysis. View Full-Text
Keywords: electrodialysis; bioelectrochemical system; microbial fuel cell; C1 gas; carbon monoxide; acetate electrodialysis; bioelectrochemical system; microbial fuel cell; C1 gas; carbon monoxide; acetate
Show Figures

Figure 1

MDPI and ACS Style

Baek, J.; Kim, C.; Song, Y.E.; Im, H.S.; Sakuntala, M.; Kim, J.R. Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System. Energies 2018, 11, 2770. https://doi.org/10.3390/en11102770

AMA Style

Baek J, Kim C, Song YE, Im HS, Sakuntala M, Kim JR. Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System. Energies. 2018; 11(10):2770. https://doi.org/10.3390/en11102770

Chicago/Turabian Style

Baek, Jiyun, Changman Kim, Young E. Song, Hyeon S. Im, Mutyala Sakuntala, and Jung R. Kim 2018. "Separation of Acetate Produced from C1 Gas Fermentation Using an Electrodialysis-Based Bioelectrochemical System" Energies 11, no. 10: 2770. https://doi.org/10.3390/en11102770

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop