<br> Dear A.D.Karve <div><br></div><div> Thank you for your open source information, Thanks for sharing very innovative problem solving practical work and the excellent results you obtained .The energy demand is increasing every where , thus centralised power production is not sustainable for developing country .The combined , solar, bio gas and pyro gas from biomass can be ideal solution and need to be practical too , but not yet made possible. </div>
<div> Josuhua Bogart observation is indeed very important in this context that , as charcoal has has structure similar to sponge.Thus the internal pore of charcoal make possible more increased surface areas.This make possible physical adsorption , much compression, more gas adsorbed , less acids .The acids are known to inhibit the methane bacterias .Thus two stage recirculation reactor was found to reduce this problems , but we faced start up problems , as acids in the fist reactor .Even though the technology can work in very large scale , developed in Europe , was found to be problem to be operated in rural areas this two stage bio digestions, not simple one your biodigestor.</div>
<div><br></div><div> In this regard making Co2 balance is an imporatant aspects .How much c02 reduction is possible compared to conventional methane .as this c02 biochar is already proven soil conditioner and c02 fertiliser. There are several published work about enhancements of biogas production, but not this much 3 times . Thus making patent , after your detailed study of c02 integration of solar and biomass can be practical approach for reduced carbon small power production from biomass and solar.The catalyst not only can reduce temperatures , can make possible steam reforming , more hydrogen , less c02 , more c0 .This co shift to hydrogen the later in digestions , can make more methane , along with charcoal co2 fertiliser , natural gas Quality bio gas.Thus integrated pyrolysis and biogas can be made possible for community power production.Simple one stage biodigestor can play key role for this small power production.</div>
<div><br></div><div>Your truely<br>Pannirselvam P.V</div><div><br></div><div> </div><div><br><div class="gmail_quote">On Thu, Oct 6, 2011 at 2:16 AM, Anand Karve <span dir="ltr"><<a href="mailto:adkarve@gmail.com">adkarve@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">The lumps were about 2 to 4 cm across.<br>
Yours<br>
A.D.Karve<br>
<div><div></div><div class="h5"><br>
On Thu, Oct 6, 2011 at 11:20 AM, Joshua Bogart <<a href="mailto:joshua.bogart@gmail.com">joshua.bogart@gmail.com</a>> wrote:<br>
> So in essence you are multiplying your surface area by using the internal<br>
> surfaces of the Charcoal which is a structure similar to a sponge. What size<br>
> charcoal are you using?<br>
><br>
> On Wed, Oct 5, 2011 at 9:01 PM, Anand Karve <<a href="mailto:adkarve@gmail.com">adkarve@gmail.com</a>> wrote:<br>
>><br>
>> Dear Wishwanathan,<br>
>> we are still working on the idea. It works. We have been able to<br>
>> reduce the size of the digester to 1/3. Charcoal has to be enclosed in<br>
>> a net bag. It does float in the initial stages, but later it absorbs<br>
>> water and becomes heavy and sinks.<br>
>> Yours<br>
>> A.D.Karve<br>
>><br>
>> On Thu, Oct 6, 2011 at 10:30 AM, Viswanathan KS <<a href="mailto:viswanathanks@gmail.com">viswanathanks@gmail.com</a>><br>
>> wrote:<br>
>> > Dear Dr Karveji<br>
>> > Your designed digestor for kitchen waste has been popular. Can this<br>
>> > digestor<br>
>> > be made smaller and therefore cheaper and more affordable for<br>
>> > households, if<br>
>> > it is filled with charcoal?<br>
>> > Charcoal of which size is used and the quantity to be used?<br>
>> > Will charcoal not tend to float in the digestor?<br>
>> ><br>
>> ><br>
>> > On Wed, Oct 5, 2011 at 9:22 AM, Anand Karve <<a href="mailto:adkarve@gmail.com">adkarve@gmail.com</a>> wrote:<br>
>> >><br>
>> >> Dear Henry,<br>
>> >> There are a lot of very simple ideas that need to be tested. I am<br>
>> >> currently working on increasing the efficiency of biogas digesters and<br>
>> >> feel that it might be possible to reduce the size and the capital<br>
>> >> expense of a biogas system. For instance, when I filled the digester<br>
>> >> with charcoal, my system accepted three times the normal daily input<br>
>> >> and produced three times as much gas.<br>
>> >> How much electrical energy would be required by the electric arc to<br>
>> >> produce producer gas? One can perhaps achieve the same temperature<br>
>> >> with paraboloid mirrors and sunlight.<br>
>> >> Yours<br>
>> >> A.D.Karve<br>
>> >><br>
>> >> On Mon, Sep 12, 2011 at 5:52 AM, Energy7 <<a href="mailto:Energy7@telusplanet.net">Energy7@telusplanet.net</a>><br>
>> >> wrote:<br>
>> >> > Hi All<br>
>> >> > I Hope this is not a double post ( I posted this from my I phone<br>
>> >> > earlier<br>
>> >> > this morning and it has yet to show up )...<br>
>> >> ><br>
>> >> > Dear A.D. Karve<br>
>> >> > My exact thought a while ago was to achieve this temperature with an<br>
>> >> > internal electric arc furnace. The resulting gas can be put thru a<br>
>> >> > catalyst.<br>
>> >> > Just lately was reminded by a colleague of the efficiency of electro<br>
>> >> > static<br>
>> >> > precipitators and am presently researching their compatibility with<br>
>> >> > producer<br>
>> >> > gas.<br>
>> >> > So : air tight electric arc furnace fed with co2 and preheated feed<br>
>> >> > stock><br>
>> >> > catalyst>98%cyclone cleaning>precip> final water filter cooling<br>
>> >> > >dryer ><br>
>> >> > co2<br>
>> >> > removal > o2 injection >ice>recycle hot co2 exhaust to preheat feed<br>
>> >> > stock.<br>
>> >> > Just an idea.. maybe too complicated? Please send me your ideas.<br>
>> >> > HN<br>
>> >> > ----- Original Message ----- From: "Anand Karve" <<a href="mailto:adkarve@gmail.com">adkarve@gmail.com</a>><br>
>> >> > To: "Discussion of biomass pyrolysis and gasification"<br>
>> >> > <<a href="mailto:gasification@lists.bioenergylists.org">gasification@lists.bioenergylists.org</a>><br>
>> >> > Sent: Saturday, September 10, 2011 11:41 PM<br>
>> >> > Subject: [Gasification] reducing temp. of gasification<br>
>> >> ><br>
>> >> ><br>
>> >> >> Dear All,<br>
>> >> >> one requires about 700C temperature for making producer gas. This is<br>
>> >> >> generally achieved by burning the feedstock itself, for which one<br>
>> >> >> introduces external air into the reactor. As a result, the producer<br>
>> >> >> gas gets diluted by the nitrogen in the air. If the process can be<br>
>> >> >> conducted in a closed vessel, which is heated from the outside, one<br>
>> >> >> can get combustible gas without all the nitrogen, but heating the<br>
>> >> >> feedstock inside a container cannot achieve the temperature that is<br>
>> >> >> required for producing producer gas, so that what one gets is<br>
>> >> >> primarily tar vapour. Has anyone thought of using a catalyst for<br>
>> >> >> getting pyrolysis gas at say 300 C? It would help me greatly, if<br>
>> >> >> such<br>
>> >> >> a catalyst were available.<br>
>> >> >> Yours<br>
>> >> >> A.D.Karve<br>
>> >> >><br>
>> >> >> _______________________________________________<br>
>> >> >> Gasification mailing list<br>
>> >> >><br>
>> >> >> to Send a Message to the list, use the email address<br>
>> >> >> <a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
>> >> >><br>
>> >> >> to UNSUBSCRIBE or Change your List Settings use the web page<br>
>> >> >><br>
>> >> >><br>
>> >> >><br>
>> >> >> <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br>
>> >> >><br>
>> >> >> for more Gasifiers, News and Information see our web site:<br>
>> >> >> <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br>
>> >> ><br>
>> >> ><br>
>> >> > _______________________________________________<br>
>> >> > Gasification mailing list<br>
>> >> ><br>
>> >> > to Send a Message to the list, use the email address<br>
>> >> > <a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
>> >> ><br>
>> >> > to UNSUBSCRIBE or Change your List Settings use the web page<br>
>> >> ><br>
>> >> ><br>
>> >> > <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br>
>> >> ><br>
>> >> > for more Gasifiers, News and Information see our web site:<br>
>> >> > <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br>
>> >> ><br>
>> >><br>
>> >><br>
>> >><br>
>> >> --<br>
>> >> ***<br>
>> >> Dr. A.D. Karve<br>
>> >> Trustee & Founder President, Appropriate Rural Technology Institute<br>
>> >> (ARTI)<br>
>> >><br>
>> >> _______________________________________________<br>
>> >> Gasification mailing list<br>
>> >><br>
>> >> to Send a Message to the list, use the email address<br>
>> >> <a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
>> >><br>
>> >> to UNSUBSCRIBE or Change your List Settings use the web page<br>
>> >><br>
>> >><br>
>> >> <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br>
>> >><br>
>> >> for more Gasifiers, News and Information see our web site:<br>
>> >> <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br>
>> ><br>
>> ><br>
>> > _______________________________________________<br>
>> > Gasification mailing list<br>
>> ><br>
>> > to Send a Message to the list, use the email address<br>
>> > <a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
>> ><br>
>> > to UNSUBSCRIBE or Change your List Settings use the web page<br>
>> ><br>
>> > <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br>
>> ><br>
>> > for more Gasifiers, News and Information see our web site:<br>
>> > <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br>
>> ><br>
>> ><br>
>><br>
>><br>
>><br>
>> --<br>
>> ***<br>
>> Dr. A.D. Karve<br>
>> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)<br>
>><br>
>> _______________________________________________<br>
>> Gasification mailing list<br>
>><br>
>> to Send a Message to the list, use the email address<br>
>> <a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
>><br>
>> to UNSUBSCRIBE or Change your List Settings use the web page<br>
>><br>
>> <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br>
>><br>
>> for more Gasifiers, News and Information see our web site:<br>
>> <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br>
><br>
><br>
><br>
> --<br>
> "A liberal is someone who feels a great debt to his fellow man, which debt<br>
> he proposes to repay with your money."<br>
> Skype: Joshua.bogart<br>
> Emial: <a href="mailto:Joshua.bogart@gmail.com">Joshua.bogart@gmail.com</a><br>
><br>
> _______________________________________________<br>
> Gasification mailing list<br>
><br>
> to Send a Message to the list, use the email address<br>
> <a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
><br>
> to UNSUBSCRIBE or Change your List Settings use the web page<br>
> <a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br>
><br>
> for more Gasifiers, News and Information see our web site:<br>
> <a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br>
><br>
><br>
<br>
<br>
<br>
--<br>
***<br>
Dr. A.D. Karve<br>
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)<br>
<br>
_______________________________________________<br>
Gasification mailing list<br>
<br>
to Send a Message to the list, use the email address<br>
<a href="mailto:Gasification@bioenergylists.org">Gasification@bioenergylists.org</a><br>
<br>
to UNSUBSCRIBE or Change your List Settings use the web page<br>
<a href="http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org" target="_blank">http://lists.bioenergylists.org/mailman/listinfo/gasification_lists.bioenergylists.org</a><br>
<br>
for more Gasifiers, News and Information see our web site:<br>
<a href="http://gasifiers.bioenergylists.org/" target="_blank">http://gasifiers.bioenergylists.org/</a><br>
</div></div></blockquote></div><br><br clear="all"><div><br></div>-<br>
</div>