I think Cheech & Chong did movie on combusting vehicles---
maybe that should be researched too---

todays humor
Mtrevor

> All
>
> There is a considerable volume of literature in the combustion science
> journals on filtration combustion.  It is due to chemisorption of O2
> in the carbon lattice and catalytic oxidation around mineral matter.
>
> This process has been extensively studied.
>
> Stephen Joseph
>
> On Mon, Oct 15, 2012 at 7:26 AM, Robert Lerner <[email protected]> wrote:
>> Hi Frank,
>>
>> I cannot answer to the "why" of spontaneous combustion of char, 
>> except to say that yours is not a unique experience. On two separate 
>> occasions in Costa Rica we experienced spontaneous combustion of 
>> bagged biochar, once with moderate damage to a transport vehicle 
>> (fortunately, smoke signals were detected before total disaster 
>> reigned).
>>
>> I searched the literature and found (apart from apocryphal tales of 
>> "human spontaneous combustion") mostly denials of char's 
>> auto-combustability. I also learned that US interstate transport 
>> regulations require fireproof containment of char.
>>
>> Point is, it will likely happen again (whether or not we can divine 
>> the "why"). Appropriate precaution advised.
>>
>> Rob Lerner
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>
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