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<div>Hello Rolf,</div><div>Are you asking about microbial methanogenesis or chemical synthesis? Microbes reduce reaction energies with an assortment of enzymes; catalysts do the same in syntheses. But either way, there must be a source of free energy to not violate the Second Law of thermodynamics.</div><div>Best, Mark</div><div><br></div><div><br></div><div><br></div><div id="composer_signature"><div style="font-size:85%;color:#575757">Sent via the Samsung Galaxy Note® 3, an AT&T 4G LTE smartphone</div></div><br><br>-------- Original message --------<br>From: "Energies Naturals C.B." <energiesnaturals@gmx.de> <br>Date: 04/19/2016 05:30 (GMT-08:00) <br>To: gasification@lists.bioenergylists.org <br>Subject: Re: [Gasification] conversion of CO2 into methane (Off Topic) <br><br><br>I do,<br><br>it surprises me, though to see that there is a way to build a higher energetical product from an energetically " lower" one.<br>Where doest the energy come from? Can anybody help me?<br><br>Thanks <br>Rolf<br><br><br>On Mon, 18 Apr 2016 17:57:13 -0500<br>Greg Manning <a31ford@gmail.com> wrote:<br><br>> Doug... I for one, find it very interesting if you kept this conversation<br>> ON LIST even though it is, as you said. Off topic. I do indeed find it of<br>> interest.<br>> <br>> Does anyone else find it interesting ???<br>> <br>> Greg Manning<br>> On Feb 2, 2016 8:36 PM, "Doug Williams" <doug.williams.nz@gmail.com> wrote:<br>> <br>> <br>> Hi Dr Karve,<br>> <br>> Not sure you are directing your question to the right forum, but as it's<br>> CO2 and methane, guess it qualifies, but never thought my own interest in<br>> this humble cell form would be useful to anyone(:-)<br>> <br>> Archaea having been around for 3-4 billion years are the ultimate colonist<br>> of any environment, survival being that they arrive at their destination<br>> from where ever they come from. Even if there was not the chemistry present<br>> to feed directly, they can also take in energy from Sunlight and convert<br>> this to feed. Mutation is rapid, given the environmental chemistry would<br>> also changing around them over a few million years or so. Time doesn't seem<br>> to matter and they keep multiplying to suit their environment. They can now<br>> be found in just about every thing on this planet,so I'm sure carbonic acid<br>> was considered ideal nutrient.<br>> <br>> Given that your interest is of their participation in digestive processes<br>> and the evolution of methane, one can only guess that the building blocks<br>> allowing their evolution branching into bacteria one way, and eucaryota the<br>> other, they had plenty of places to turn host nutrient into methane. My own<br>> interest is their function within the human gut, evidenced by their methane<br>> production and distinctive smell, and how they might be involved with the<br>> matrix of peptides on which warm blooded cells of life forms build.<br>> <br>> It may be better to discuss this privately rather than be off topic.<br>> <br>> Regards,<br>> Doug Williams,<br>> Fluidyne.<br>> <br>> On Mon, 1 Feb 2016 09:23:11 +0530<br>> Anand Karve <adkarve@gmail.com> wrote:<br>> <br>> > When the archaea arrived on the earth, the earth's atmosphere had mainly<br>> > nitrogen and carbon dioxide. How did they survivet? I have been thinking<br>> > on it. CO2 forms H2CO3 when it combines with water. Did they use this<br>> > carbonic acid as food? (2H2CO3=CH4 + CO2)<br>> > Yours<br>> > A.D.Karve<br>> > ***<br>> > Dr. A.D. Karve<br>> ><br>> > Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)<br>> ><br>> > Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)<br>> <br>> <br>> --<br>> Doug Williams <Doug.Williams.nz@gmail.com><br>> <br>> _______________________________________________<br>> Gasification mailing list<br>> <br>> to Send a Message to the list, use the email address<br>> Gasification@bioenergylists.org<br>> <br>> to UNSUBSCRIBE or Change your List Settings use the web page<br>> http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org<br>> <br>> for more Gasifiers, News and Information see our web site:<br>> http://gasifiers.bioenergylists.org/<br><br><br>-- <br>Energies Naturals C.B. <energiesnaturals@gmx.de><br><br>_______________________________________________<br>Gasification mailing list<br><br>to Send a Message to the list, use the email address<br>Gasification@bioenergylists.org<br><br>to UNSUBSCRIBE or Change your List Settings use the web page<br>http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org<br><br>for more Gasifiers, News and Information see our web site:<br>http://gasifiers.bioenergylists.org/<br><br></body></html>