CAJ | 학술논문

研究了反应器顶部在CO_2,N_2,Ar和空气条件下对光合细菌生长和产氢量的影响.试验结果表明,光合细菌在Ar条件下具有最佳的生长和产氢能力,而N_2、空气和CO_2条件下的产氢量比Ar条件下分别减少了66.97%,11.64%,4.57%.当反应器顶部空气量由反应器容积的1/20增加至1/2时,其容积产氢率则由3.034 L·L~(-1)下降到2.57 L·L~(-1),分别是Ar条件下的92.16%和76.07%.反应器初始状态下少量空气的存在并没有对光合细菌产氢产生完全抑制作用,因此连续制氢反应器设计中可以忽略少量空气的影响.
연구료반응기정부재CO_2,N_2,Ar화공기조건하대광합세균생장화산경량적영향.시험결과표명,광합세균재Ar조건하구유최가적생장화산경능력,이N_2、공기화CO_2조건하적산경량비Ar조건하분별감소료66.97%,11.64%,4.57%.당반응기정부공기량유반응기용적적1/20증가지1/2시,기용적산경솔칙유3.034 L·L~(-1)하강도2.57 L·L~(-1),분별시Ar조건하적92.16%화76.07%.반응기초시상태하소량공기적존재병몰유대광합세균산경산생완전억제작용,인차련속제경반응기설계중가이홀략소량공기적영향.
The effects of different gas (CO_2 ,N_2 ,Ar and air) on the growth and hydrogen production of PSB (Photosynthetic Bacteria) were introduced in the paper.The test results showed Ar was the best gas for PSB's growth and hydrogen production in the chosen gases,and N_2 was disadvantage for PSB's growth and hydrogen production due to its inhibition on the activity of nitrogenase,and made the lag phase extend for 24 h and hydrogen yield reduced by 66.97% compared to that in the Ar atmosphere.Furthurmone,the air and CO_2 made the hydrogen yield reduce by 11.64% and 4.57% respectively.The hydrogen production rate changed from 3.034 L·L~(-1) to 2.57 L·L~(-1) with air amount in the headspace of reactor ranging from 1/20 to 1/2 of the volume of reactor,which means a little air in the headspace of reactor cannot inhibit PSB's growth and hydrogen production completely.The effect of a little amount of air in the headspaee can be ignored in designing the reactor.