0
$\begingroup$

Is Hydrogen gas present in biogas? As it is highly inflammable, may it ignite the other gases like methane?

$\endgroup$
3
  • $\begingroup$ What's your question here? Are you asking why biogas with hydrogen doesn't spontaneously ignite? $\endgroup$ Jul 10 '13 at 6:51
  • $\begingroup$ first question is whether Biogas constitutes Hydrogen and if yes why doesn't then the biogas spontaneously ignite? $\endgroup$
    – sk1
    Jul 10 '13 at 6:57
  • $\begingroup$ cf. biology.stackexchange.com/questions/7336/… $\endgroup$ Jul 10 '13 at 7:28
3
$\begingroup$

The constitution of the biogas depends greatly on its source and the fermenting microbe. But in general, it does contain hydrogen about 0-1%. Even if it did contain large amounts, the mixture would be inflammable, but it would not burst into flames without any external igniter, which could be any small fluctuation of heat if the mixture is too unstable. But in general, an inflammable gas doesn't start burning on its own.

$\endgroup$
1
$\begingroup$

The auto ignition temperature of a combustible mixture of hydrogen in air is 500 degrees C source - Wikipedia. It will not spontaneously ignite, some part of it must first reach that temperature through a spark, flame, or other heat source. Once it ignites, the methane of course will burn too.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.