[Stoves] on ocean acidification

Fri Jul 5 17:54:03 CDT 2013

Nicely said Dean.
As some one who lives on a calcareous sand pile 6 feet high on a coral ridge in the middle of the Pacific Ocean,.
ocean acidification is a critical concern and its mention on the stove list is not totally out of scope. It is pertinent
and relates, however we might want to primarily focus on the stoves here and there by solve the problem any way.

Michael N Trevor
Majuro
Marshall Islands 

From: Dean Still 
Sent: Saturday, July 06, 2013 8:38 AM
To: Discussion of biomass cooking stoves 
Subject: Re: [Stoves] on ocean acidification

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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