Functional collaboration of biofilm-cathode electrode and microbial fuel cell for biodegradation of methyl orange and simultaneous bioelectricity generation
- 22 Downloads
A distinctive process (BCE-MFC) was developed to explore the methyl orange (MO) degradation and simultaneous bioelectricity generation based on the functional collaboration of biofilm, electrolysis, constructed wetland, and microbial fuel cell. The biofilm-cathode electrode–microbial fuel cell (BCE-MFC) was capable of sustaining an excellent MO removal (100%) and bioelectricity production (0.63 V). BCE significantly enhanced MO biodegradability, thus resulting in a 56.3% improvement of COD removal in subsequent MFC. Bacillus was dominant in biofilm on cathode in BCE. In MFC, Proteobacteria phylum (64.84%) and Exiguobacterium genus (13.30%) were predominated in the anode region, probably basically responsible for electricity generation. Interestingly, relatively high content of Heliothrix sp. (9.94%) was found in the MFC designed here, which was likely to participate in electricity production as well. The proposed functional collaboration may be an effective strategy in refractory wastewater treatment and power production.
KeywordsBiofilm Electrolysis Constructed wetland Microbial fuel cell High-throughput sequencing Methyl orange
This research was supported by the Research Items from the Department of Science and Technology of Anhui Province, China (1604f0704047), and the Special Foundation for Young Scientists of Anhui province, China (gxyqZD2016212).
- APHA (2005) Standard methods for the examination of water and wastewater, 20th edn. American Public Health Association, American Water Works Association and Water Environment Federation, WashingtonGoogle Scholar
- Hamad H, Bassyouni D, El-Ashtoukhy ES, Amin N, Abd El-Latif M (2018) Electrocatalytic degradation and minimization of specific energy consumption of synthetic azo dye from wastewater by anodic oxidation process with an emphasis on enhancing economic efficiency and reaction mechanism. Ecotoxicol Environ Saf 148:501–512CrossRefGoogle Scholar
- Zou HM, Lu XW, Abualhail S, Shi J, Gu Q (2014) Enrichment of PAO and DPAO responsible for phosphorus removal at low temperature. Environ Prot Eng 40:67–82Google Scholar