Study On The Adaptation Of Photo-fermentative Biohydrogen And Proton Exchange Membrane Fuel Cell

With the gradual shortage of energy,photo-biohydrogen which uses bacteria to produce hydrogen,has become a hot green energy technology with unlimited prospects nowadays.Proton exchange membrane fuel cell can convert hydrogen energy into electrical energy efficiently and without pollution.combing them together and it will become a green and efficient way to generate power.Thispaper studied the effects of different conditions for biohydrogen,used gas with different hydrogen concentration(on the basis of the producted hydrogen)to drive the fuel-cell and analyse the output perfomance.The experiment used glucose as substrate,selected HAU-M1 bacteria,and used continuous photo-hydrogen production reactor with a volume of 1m3 to study the influence of different hydraulic retention time on hydrogen production rate and hydrogen concentration.Using the corresponding 40%-60%hydrogen-carbon dioxide mixed gas to drive a proton exchange membrane fuel cell which with the maximum power of 80W,and adapte the fuel cell to the continuous photosynthetic biological hydrogen production device according to experimental results.The result shows:1)The proton exchange membrane fuel cell driven by 40%-60%hydrogen can work well at a certain power.In this range,the corresponding output-power and time can be well fitted by the quadratic equation,the input-gas-flow and output-power can be well fitted with a one-time equation.2)The total hydrogen production rate became highest when the hydraulic retention time is set to 24 h in the continuous reactor with a volume of 1m3.The total hydrogen production rate is 1.16 m3/m3/d,and the average hydrogen concentration is 50.97%.The hydrogen which is continuously produced under this condition can drive the fuel cell to output the electric power of about 62.25W continuously.