Thank you very much Balaji We have lot of cocunut husk hsk here all wasted . we suerly need you help for this project development Can you give us some details about the low cost brick or ceramic gasificatio units for rural areas . What about any new news from IIsc gasifaction adopted to rural areas.
Thanking you yours sincerly P.V.Pannirselvam On 5/11/05, Balaji <[EMAIL PROTECTED]> wrote: > Hello Pannir, Mike, Thomas and Steve, > > The open top down draught reburn gasification process developed by Indian > Institute of Science and > used in our power and thermal systems generates about 5% of the biomass feed > as charcoal, having ~ > 80% fixed carbon and Iodine Value of 450 -550. ( This IV is a measure of the > mg of Iodine adsorbed > per gm of charcoal and is different from the IV used to determine > unsaturation in organic compounds > such as fattty acids. Mehtylene Blue and CCl4 Carbon Tetra Chloride are other > chemicals used to > index the adsorptivity of carbon). We have developed a simple thermal > activation process, where the > dry charcoal as above is held at 800 Deg C for a period of 2 - 3 hours and > then cooled enhancing > the Iodine Value to 800. > > Most municipalities in the country are mandated to use Activated Carbon of IV > 500 to remove colour, > odour and possibly some microbes. The online tap water filters in India use a > variety of finely > divided silver doped Activated Carbon which has higher IV. > > As you rightly point out, the inorganics (and some of the organics as well) > are eluted with dilute > mineral acid, the cheapest being dilute HCl, when more of the surface gets > opened up, increasing the > IV. > > This has particular relevance to rural areas, where power can be generated at > the "pit head", so to > speak and the charcoal used as an "organic" filter to provide clean drinking > water from contaminated > ground water. We are implementing a UNDP funded grid connected rural > electirfication project in > Karnataka where we hope to realise some of these ideas. > > I shall highly appreciate any leads to the study of ethanol's effect on the > IV/surface area of > charcoal. > > Regards. > > balaji > > ----- Original Message ----- > From: "Pannir P.V" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Sunday, May 08, 2005 4:01 AM > Subject: Re: [Biofuel] uses for charcoal -- (was) simple cook stoves > > Helo Mike , Dean Thomas and Steve > > The process of making or activating carbon can be simple > chemical treatments to remove the inorganic metal using acids , > steam oxidation of organic materials or ethanol solvent removal > of oganic materials. > By using appropriate filter media and support the Lye formation > can eliminated and hence no need to bother as Steve thinking , as > solvent can form lye surely. > > Steve , the poor really drink lye, water with impurities in > several part of the rural areas of the world and what we want to > do is to filter the lye using activated carbon > > I am not able to find the results about ethanol solvent activation > as this is novel and new process. > Here Keith can come out with the recent work in this fields > from the data banks , even though I have tried to do so with out > success. > For rural area this simple process is more favourable l than > industrial conventional methods . > > sd > Pannirselvam > Brasil > > <snip> > > > _______________________________________________ > Biofuel mailing list > [EMAIL PROTECTED] > http://wwia.org/mailman/listinfo/biofuel > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Biofuel archives at Infoarchive.net (searchable): > http://infoarchive.net/sgroup/biofuel/ > -- Pagandai V Pannirselvam Universidade Federal do Rio Grande do Norte - UFRN Departamento de Engenharia Qu’mica - DEQ Centro de Tecnologia - CT Programa de P—s Gradua¨‹o em Engenharia Qu’mica - PPGEQ Grupo de Pesquisa em Engenharia de Custos - GPEC Av. Senador Salgado Filho, Campus Universit‡rio CEP 59.072-970 , Natal/RN - Brasil Residence : Av Odilon gome de lima, 2951, Q6/Bl.G/Apt 102 Capim Macio EP 59.078-400 , Natal/RN - Brasil Telefone(fax) ( 84 ) 215-3770 Ramal20 2171557 Telefone(fax) ( 84 ) 215-3770 Ramal20 2171557 _______________________________________________ Biofuel mailing list [EMAIL PROTECTED] http://wwia.org/mailman/listinfo/biofuel Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuel archives at Infoarchive.net (searchable): http://infoarchive.net/sgroup/biofuel/
