[Digestion] biodigester construction in Bolivia (Video)

Wed Jan 16 09:27:48 CST 2008

Hi David.
There are now about 350 low cost biodigesters installed in Bolivia. But now the GTZ (finances Netherlands) have a big program for the next three years, we are thinking in 2000 or 3000 biodigesters for 2010, depends on the demand and answer from the rural families. We are making alliances with small scale farmers associations interested in biodigester.

the cost on material of a biodigester is 170 $us in atiplane; 140 $us in valley; and 120$us at tropical areas.

Thanks for the link http://www.ashdenawards.org/. i dint knew about this before. we will be looking to appaly for next year....thanks a lot1

Keep in contact
jaime

> Date: Wed, 16 Jan 2008 15:08:49 +0000
> To: tallerbiogas at hotmail.com; digestion at listserv.repp.org
> From: d.j.fulford at reading.ac.uk
> Subject: Re: [Digestion] biodigester construction in Bolivia (Video)
> 
> Jaime, Hi
> 
> How many of these units have been built? If this is an ongoing programme, 
> it might be worth putting it up for an Ashden Award (www.ashdenawards.org). 
> I was in La Paz, Bolivia 2 years ago (March 2006) looking at a micro-hydro 
> programme on behalf of the Ashden Awards (it unfortunately did not get a 
> prize - the systems were seen as too expensive). There are several 
> programmes on biogas in different parts of the world that are getting 
> prizes, if you look at the list of past winners
> 
> We do have a Spanish translator, so the forms called be written in Spanish. 
> Unfortunately, it is too late for this year's awards, but if the project is 
> working successfully, you can start the process next September for the 2009 
> awards.
> 
> The video looks very interesting.
> 
> Cheers,
> 
> David F
> 
> At 09:52 16/01/2008 -0400, Jaime Marti Herrero wrote:
> 
> >Hi. i will try to explain some things about these biodigesters (i am from 
> >Spain and my English is not as good as i would like, sorry)
> >
> >the raw material is fresh cow manure. some times the family mix it with 
> >sheep manure or pig.But The principal material is cow manure.
> >This biodigesters are design for to be load with 20kg of fresh cow manure 
> >and 60 liters of water. The retention time is about 75 days. And the 
> >biogas production is estimated on 700-750 liters of biogas. this amount of 
> >biogas is enough for 4-5 hour of cooking. Also they can use a gas for 
> >light with a gas lamp.
> >
> >The biodigesters deley producing goob biogas  about two months since its 
> >installation and first load.
> >
> >in some regions, there are two moths with no water. In this case they can 
> >use the liquid fertilizer to mix with new fresh cow manure anda load the 
> >biodigester. so in these months the liquid fertilizer replaced the water.
> >The biodigester must be inside a greenhouse. the walls of the green house 
> >must be made with pressed sand ('adobe' or 'tapial' in spanish) and this 
> >wall have to be 40cm width. this is to take adventage os the thermal mass 
> >of the walls for the colds nights.
> >the plastic is black color, but not to gain solar radiation, if not 
> >because we have seen that with black color the durability of the plastic 
> >is longer.
> >
> >I have write design Guide and manual installation about this technology. 
> >It is in Spanish, and i hope some one could translate it to English. It is 
> >free distribution document.
> >
> >Please, any question about the technology or the experience we are having 
> >for 7 year in Bolivia, don't doubt to ask. As well, in Peru is beginning 
> >to installation this kind of biodigester.
> >
> >We keep in contact
> >Jaime Marti Herrero
> >GTZ-Energía
> >
> > > From: list at sylva.icuklive.co.uk
> > > To: digestion at listserv.repp.org
> > > Date: Wed, 16 Jan 2008 11:39:09 +0000
> > > Subject: Re: [Digestion] biodigester construction in Bolivia (Video)
> > >
> > > On Mon, 14 Jan 2008 11:08:53 -0400, Jaime Marti Herrero wrote:
> > >
> > > >I just have upload a video to youtube about the construction of a 
> > biodigester for Altiplano region, Bolivia. This means 3500-4500 meter 
> > over the sea level, and minimum temperatures of -15Cº.
> > >
> > > It looks interesting, what is the raw material?
> > >
> > > Also as the gas pipe leaves the digester there is what looks like a
> > > broken bottle Teed off the line, what is it?
> > >
> > > AJH
> > >
> > >
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> *** Dr David Fulford, MSc Renewable Energy, Engineering Building ***
> ***     School of Construction Management and Engineering        ***
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