Okanagan Branch is hosting a Lunch & Learn
Microbial Fuels Cells for Wastewater Treatment
Thurs. Apr. 9 @ noon (PST)
This will be a virtual presentation.
An introduction to Microbial Fuel Cells as a means to treating wastewater by Dr. Deborah Roberts of UBC-O.
Practice area: Water resource planning & management
Register online below (login to register). Go to this link https://bcia.adobeconnect.com/microbial/ to join the webinar on Thurs. Apr 9. (If you have not attended an Adobe Connect webinar previously, it is recommended that you test the link prior to the webinar. Uses )
(Description of Presentation:
Microbial fuel cell (MFC) technology shows promise as an alternative to conventional wastewater treatment systems due to renewable energy production and the potential to treat wastewater. The goal of this study was to solve challenges when applying MFC to winery wastewater treatment. A 100 mL air cathode MFC using carbonaceous material as the electrodes was designed and fabricated, inoculated with winery sludge and fed with synthetic winery wastewater.
The pH was found to be essential for the enrichment and maintenance of the MFC. An optimum pH of 6.5 maintained by phosphate buffer (PB) provided stable MFC performance for both power production and chemical oxygen demand (COD) removal. When the reactor was maintained at 1000 mg/L COD, the highest COD removal rate was reached within 4 hours (h) and overall removal reached ~80% within 60 h, the maximum output voltage was obtained within 0.5 h and lasted for 60±3 h. A COD:PB ratio (COD(mg/L):PB(mM)=100:1) was suggested to counter pH fluctuations during MFC operation. With sufficient buffer, the COD removal rate and energy recovery efficiency were linearly related to SWW strength until the system limit was reached. Dog food was an effective alternative feed to maintain an active microbial population during the off season. An external resistance set close to the internal resistance maximized the treatment efficiency, whereas a higher external resistance increased energy recovery. Allowing time for a mature biofilm to form reduced the internal resistance of the reactor and provided better output power density.