| 摘要 |
PURPOSE: An electrochemical preparation method of formic acid using carbon dioxide is provided, thereby simultaneously carrying out reduction of carbon dioxide and conversion of carbon dioxide into useful organic matters. CONSTITUTION: An electrochemical preparation method of formic acid using carbon dioxide comprises electrochemical reduction of carbon dioxide using formic acid dehydrogenase or formic acid dehydrogenase-producing anaerobic bacteria and an electron carrier in which reversible oxidation/reduction is occurred at electric potential of -400 to -600 mV, wherein the concentration of the electron carrier is 5 to 15 mM; the anaerobic bacteria are selected from Clostridium thermoaceticum, Clostridium thermoorthotrophicum, Acetobacterium woodii, Acetogenium kivui, Clostridium aceticum, Clostridium ljungdahlii, Eubacterium limosum or a mixture thereof; the electron carrier is selected from methylviologen, N,N,-diethyl-4,4-bipyridyl, N,N-diisopropylyl-4,4-bipyridyl, 4,4-bipyridyl or a mixture thereof; the reduction temperature is 20 to 70 deg. C; and the reduction pH is 6.0 to 7.0.
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