[Stoves] The Combined Heat and Biochar Gasifier

[Ronal Larson]

Paul:, Stoves list and (added) biochar list

	These are wonderful numbers.  Congratulations.

	I add the biochar list, where we seldom hear of emissions.

	I know that some biochar production facilities have to pass EPA regulations in the US (and similar in other countries).  Can anyone report what regulations they have had to meet (and how hard) - similar to Paul”s for WHO?

RON


> On May 1, 2023, at 3:41 AM, Paul Olivier <paul.olivier at esrla.com> wrote:
> 
> The PM emissions from my gasifier averaged 9.1 micrograms per cubic meter over 24 hours. In its definition of a clean cook stove, the World Health Organization stipulates that PM emissions should not exceed 25 micrograms per cubic meter. No problem here with respect to particulate matter: 9.1 micrograms is well below 25 micrograms.
> 
> According to WHO guidelines, carbon monoxide emissions should not exceed 28.40 ppm over a one hour period. The Lotus Fire Gasifier emitted very little CO over a one hour period: only 3.925 ppm (well within the WHO guidelines). The average CO emissions over 24 hours according to the WHO guidelines should not exceed 5.68 ppm. The average CO emissions of the gasifier was 0.491 ppm (again well within WHO guidelines).
> 
> So my gasifier easily meets standards set by the World Health Organization in terms of particulate matter and carbon monoxide emissions. About 50% of Vietnamese households burn firewood. The health problems associated with this practice are truly horrendous. Burning firewood is one of the leading causes of mortality in Vietnam. If these households stopped burning firewood and used gasifiers, households would be protected from toxic levels of human carcinogens, and human health in Vietnam would improve dramatically.
> 
> -- 
> Paul A. Olivier PhD
> 104/43 Phu Dong Thien Vuong
> Dalat
> Vietnam
> 
> Louisiana telephone: 1-337-447-4124 (rings Vietnam)
> Mobile: 090-694-1573 (in Vietnam)
> Skype address: Xpolivier
> http://epwt.vn/en/home/
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