A biofuel cell using wastewater and active sludge for...

H - Electricity – 01 – M

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H01M 8/16 (2006.01) C02F 3/00 (2006.01) C02F 3/30 (2006.01) C02F 1/461 (2006.01)

Patent

CA 2378558

The present invention provides a biofuel cell using wastewater as a fuel. Electrochemically active microorganisms present in wastewater and active sludge sued in the present invention oxidize organic substances present in wastewater. Electrons generated from the oxidation are discharged outside of the microorganism cell and transferred directly to the electrode, thereby allowing electric current to be generated while allowing wastewater to be purified. The biofuel cell using the electrochemically active bacteria according to the present invention allows an electric energy of up to 0.22 mA to be generated, and also enables COD of the wastewater used as a fuel to be decreased from 1900 ppm to 55 ppm. Moreover, an efficiency of the biofuel cell is varied depending on the king and concentration of wastewater.

La présente invention concerne une pile à biocombustible faisant intervenir des eaux usées comme combustible. Des micro-organismes à activité électrochimique présents dans les eaux usées et la boue active et utilisés dans la présente invention oxydent les substances organiques présentes dans les eaux usées. Les électrons produits par l'oxydation sont déchargés hors de la cellule de micro-organismes et transférés directement dans l'électrode, ce qui permet de produire du courant électrique tout en purifiant les eaux usées. La pile à biocombustible faisant intervenir des bactéries à activité électrochimique selon la présente invention permet de produire jusqu'à 0,22 mA d'énergie et de réduire la demande chimique en oxygène (COD) des eaux usées de manière à la faire passer de 1900 ppm à 55 ppm. En outre, l'efficacité de la pile à biocombustible varie en fonction du type et de la concentration des eaux usées.

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