1. Toxicity of the effluent to methanogen was analyzed.

2. The article summarizes methanogenesis under low-temperature conditions, including methanogenesis in natural cold environments and in artificial anaerobic digesters by psychrophilic methanogen.

3. This dissertation study about the methane yield method, methanogen active in history and methanogen type by synthesize using isotopes analysis method and compare coalbed gas with pyrolysis gas.

4. Cellulose-decomposed bacteria and methanogen counting decreased, but the effect of alfalfa saponin on methanogen counting was more than on cellulose-decomposed bacteria counting.

5. Because methanogen is strict with its environment, especially with the occurrence of oxygen, trivial change should disturb the bacterial collects and make the number different from the reality.

6. No dietary factors have been shown to affect colonisation of the large intestine with methanogens.

7. When sulphate availability is increased sulphate reducing bacteria proliferate and eventually may outcompete methanogens when the sulphate supply is sufficient.

8. So scientists did some digging, literally, to investigate. They found a particularly hearty methanogen called named Methanosarcina barkeri, or just M. barkeri, that can survive at low pH levels.

9. Hydrogen sulfide has been recognized to be toxic to anaerobic microorganism, especially methanogen.

10. Methanogen is the core of the methane fermentation. And methanogen is the last member of the anaerobe chain in nature carbon cycle.

11. Otherwise,[sentencedict.com/methanogen.html] emulsion can form a kind of oil film on suffice of coal. It can provide a nice anaerobic environment for methanogen consortia.

12. According to the literature, sarcina is one of the methanogen that can produce methane in high performance. The remaining of sarcina will apparently improve methane production.