[Stoves] on ocean acidification

Dean Still deankstill at gmail.com
Fri Jul 5 15:38:46 CDT 2013


Hi All,

In recent discussions making stoves that reduce climate change as well as
health problems has been a focus.  I'm not an expert but to me that means
investigating how stoves can burn as cleanly as possible. Making as close
to zero amounts of CO and PM while cooking food as effectively as possible:
making cooks happy as well. If the stove makes charcoal that will be buried
it should be super clean when burning/cooking.

We're getting closer. Stoves with chimneys can help a lot to protect health
as long as the outside air stays below WHO guidelines but adding climate
change means that we want to see only carbon neutral CO2 coming out of the
chimney.

I think that in the next few years biomass stoves that get close to this
degree of clean burning will be for sale, available in the millions and at
market prices. It's great that the Global Alliance is pushing this '
technological revolution'. And as a concerned Earthling, I want to
sincerely thank all of the inventors and all concerned who are helping the
plants and animals, the humans, on our planet.

Thanks to Jacob, Tom, N. Nurhuda, Ron, Fred, Peter, Ben, Paul, Tom, Larry,
Ranyee, Leslie, John, Crispin, and everyone.

THANK YOU!!!,

Dean

On Fri, Jul 5, 2013 at 10:29 AM, Frank Shields <frank at compostlab.com> wrote:

> This is a very good topic and related to Stoves to the point of noting the
> difference of a measure of Biochar pH value and alkalinity value. The pH is
> really not that important as many think it is. It's the alkalinity that is
> important. Having a water with a pH of 8.3 takes little acid to lower the
> pH
> but toss in a chunk of lime and the pH is still 8.3 but you will need to
> add
> acid until all the lime is dissolved before the pH goes down. So pH is just
> a reading. Alkalinity (or neutralizing value) is a measure of the amount of
> buffering holding that pH. We report this as CaCO3 equivalent units so it
> can be compared to adding limestone to a soil. We boil a Biochar sample in
> 100 mls of 0.5N HCl to dissolve all the carbonates and oxides in the sample
> then back titrate using NaOH to determine the amount buffering (or
> neutralizing value) the sample has.  Much more useful.
>
> Frank
>
>
> Thanks
>
> Frank Shields
>
> BioChar Division
> Control Laboratories, Inc.
> 42 Hangar Way
> Watsonville, CE  95076
>
> (831) 724-5422 tel
> (81) 724-3188 fax
> frank at biocharlab.com
> www.controllabs.com
>
>
>
>
>
> -----Original Message-----
> From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
> ajheggie at gmail.com
> Sent: Thursday, July 04, 2013 11:47 PM
> To: Discussion of biomass cooking stoves
> Subject: Re: [Stoves] on ocean acidification
>
> On Thu, 04 Jul 2013 23:21:20 -0600,Mark Bigland-Pritchard / Low Energy
> Design Ltd <mark at lowenergydesign.com> wrote:
>
> >I wouldn't normally want to post off-topic, but I think it is necessary
> >that an error be corrected before this thread is put to sleep.
>
> Mark I'm happy with your correction explaining pH. As we generally do use
> pH
> to denote acidity rather than hydrogen ions I think it is misleading to
> then
> say a 30% increase in hydrogen ion activity equates to a 30% change in
> acidity.
>
> I think change in ocean ecology due to this small change in pH is a very
> serious concern but please all of you take the discussion elsewhere and
> stick to stove issues.
>
> AJH
>
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