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Extremophiles: the organisms thriving in environments where most organisms do not exist

5/29/2019

 
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In wastewater and bioremediation, we usually deal with mesophilic environments. Mesophilic being defined as:
  • Temperature 10 - 40 Deg C
  • pH 6.0 - 8.5
  • Salinity 0 - 33,000 ppm
When we move outside the above environments, the bacteria begins to change. For example, as temperatures increase over 43 Deg C, the bacteria populations change toward higher temperature mesophilic and finally to thermophilic organisms. Just how extreme can bacteria go? In the case of archaeal organisms it can get very extreme.

A recent paper found a new type of archaea living in a rift zone volcano with temperatures between 90 - 109 Deg C and a pH of 0. I don't think we would see this organism in most wastewater facilities, but it is a good read on life at the extremes.

https://www.nature.com/articles/s41598-019-44440-8
myassignmenthelp link
5/29/2020 05:22:55 am

These are very harsh conditions. Normally animals cannot survive in these conditions. It is interesting to know that some organisms are still striving for their life in these circumstances. Researchers are doing a superb job in this regard.


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    Author

    Erik Rumbaugh has been involved in biological waste treatment for over 20 years. He has worked with industrial and municipal wastewater  facilities to ensure optimal performance of their treatment systems. He is a founder of Aster Bio (www.asterbio.com) specializing in biological waste treatment.

    View my profile on LinkedIn

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