Treatment of agro-food industrial waste streams using osmotic microbial fuel cells: Performance and potential improvement measures
Issued Date
2022-08-01
Resource Type
eISSN
23521864
Scopus ID
2-s2.0-85133443569
Journal Title
Environmental Technology and Innovation
Volume
27
Rights Holder(s)
SCOPUS
Bibliographic Citation
Environmental Technology and Innovation Vol.27 (2022)
Suggested Citation
Xue W., Chanamarn W., Tabucanon A.S., Cruz S.G., Hu Y. Treatment of agro-food industrial waste streams using osmotic microbial fuel cells: Performance and potential improvement measures. Environmental Technology and Innovation Vol.27 (2022). doi:10.1016/j.eti.2022.102773 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/83177
Title
Treatment of agro-food industrial waste streams using osmotic microbial fuel cells: Performance and potential improvement measures
Author(s)
Other Contributor(s)
Abstract
Osmotic microbial fuel cell (OsMFC) is an emerging wastewater treatment technology which incorporates multiple functions such as bioelectricity generation, organic substrate removal, and wastewater reclamation. This study firstly reported the performance and potential improvement measures of OsMFCs in treating selected agro-food industrial waste streams, i.e., brewery wastewater (BW), sweetener process wastewater (ST), and swine wastewater (SW). BW and SW wastewaters with good biodegradability, showed high power density (11.1 and 9.3 W/m3) and soluble chemical oxidation demand (sCOD) removal (89.2 ± 4.1 and 70.9 ± 3.8%) in OsMFCs. In contrast, OsMFC showed low performance with ST wastewater despite its high sCOD load. Possibilities in improving the treatment performance through modifying the operational and process settings were further explored. Shortening anode hydraulic retention time (HRT) was able to improve the bioelectricity generation and water production, whereas slightly compensated the sCOD and nutrient removal efficiencies. However, this approach showed limited effect in enhancing the ST-OsMFC. A pre-fermentation process with a minimum HRT of approximately 20 h was recommended to enhance the treatability of ST wastewater by previously converting the complex organic substrates in the raw water into volatile fatty acid (VFA).