产乙酸菌

一种产氢产乙酸菌互营共培养体的筛选及其群落结构解析

Selection and Community Structure Analysis of Two New Syntrophic Acetogen Cocultures

PCP对厌氧颗粒污泥中不同微生物活性有不同的抑制作用，对利用乙酸的甲烷菌和利用丙酸和丁酸的产氢产乙酸菌都有强烈的抑制作用；

Acetate-utilizing methanogens and hydrogen-producing acetogenic bacteria that use propionate and butyrate suffer much higher inhibition from PCP .

当温度从20℃下降至15℃时，产氢产乙酸菌和产甲烷菌等受到较大影响，在13d的时间内COD去除率下降了近一半，降至40%~60%。

However , the activities of hydrogen-producing acetogenic bacteria and methanogens were affected severely when the temperature decreased to 15 ℃ . The COD removal efficiency decreased by half in 13 d.

因此强化产氢产乙酸菌群的功能作用，将会有效地提高厌氧生物处理系统的效能。

The efficiency of anaerobic organic wastewater treatment system would be improved by enhancing the hydrogen-producing acetogens .

放置三个月以上的厌氧颗粒污泥，产氢产乙酸菌活性几乎丧失，利用甲酸和氢的甲烷菌受到的影响相对较小。

In sludges deposited for 3 months , little activity of hydrogen producing acetogens was determined , whereas the activities of formate utilizing and hydrogen utilizing methanogens were less affected by storage .

随后，产氢产乙酸菌成为优势菌，它们利用发酵细菌代谢产物产生乙酸和氢，两者之间具有食物链关系。

Syntrophic acetogenic bacteria become dominate bacteria followed by fermentation bacteria . They use the metabolites from fermentation bacteria to produce acetate and H , which shows the food chain relationship with fermentation bacteria .

产甲烷菌群、产氢产乙酸菌群、硫酸盐还原菌群和丝状菌群是厌氧颗粒污泥中重要的功能菌群。

Methanogens , syntrophic acetogenic bacteria , sulfate reducing bacteria and filamentous bacteria are considered to be important functional microbial population in anaerobic granular sludge .

试验结果表明：在硫酸盐还原过程中，分子氢的产生者是产酸菌（AB）、产氢产乙酸菌（HPA）和利用脂肪酸的硫酸盐还原菌（FSRB）；

Experimental results showed that acid-producing bacteria ( AB ), hydrogen-producing acetogens and fatty acids-utilizing sulfate reducing bacteria ( FSRB ) were main hydrogen producer in the reactor .

然而，在产甲烷的作用下，通过产氢产乙酸菌和产甲烷菌间的种间氢转移，体系中的氢分压大为降低，使整个消化过程得以顺利进行。

However , in the presence of methanogenesis the hydrogen interspecies transfer between the hydrogenic and acetogenic bacteria and methanogenic bacteria makes partial hydrogen pressure decrease greatly , and then the whole process of anaerobic digestion can carry out favorably .