[Digestion] Digestion Digest, Vol 26, Issue 6

[Paul Harris]

G'day Edward,

Welcome to the list!

When asking for "best" you need to know how "best" is defined. When 
people ask me about engines and biogas I reply that you need to consider 
the FULL cost of cleaning the biogas (Capital, operating, consumables, 
maintenance and disposal of by-products) if the quality is OK compared 
to the slightly reduced engine life by doing nothing (along with all the 
savings in worry).

Similarly with digesters, you can have high tech (high rate) digesters 
or you can have much simpler (and cheaper?) systems doing the same thing.

All the best,
HOOROO

Mr Paul Harris BEng (Ag) (Melbourne)
Visitor at The University of Adelaide

On 16/10/2012 12:10 PM, Edward Silalahi (PKU) wrote:
> Dear All,
> I'm a beginner in bio gas, I'm Indonesian country (south asia region),
> in my country we are new for bio gas, so need more learn about this with
> all aspects, I would like to know further about the:
> 1. As I read the CH4 (methane gas) make 23 times worse compare to CO2
> due to  GHG, could I get the technical explaination about this? How the
> process in the atmosphere for GHG effect by CH4 and CO2?
> 2. In bio gas installation what is the best parameters of bio gas for
> gas engine?
> 3. What is the best technology for bio gas project for palm oil mill
> effluent? Raw material of palm oil mill effluent COD: 55000 ppm, pH: 4
> to 5, Oil and grease below 1%
>
> Hoping some body would not mind to give me the explaination.
>
>
> Best Regards++
>
> Edward Silalahi
> Engineering Dept
> "Doubt isn't the opposite of  faith, it is an element of  faith"
>
> -----Original Message-----
> From: Digestion [mailto:digestion-bounces at lists.bioenergylists.org] On
> Behalf Of digestion-request at lists.bioenergylists.org
> Sent: Tuesday, October 16, 2012 2:01 AM
> To: digestion at lists.bioenergylists.org
> Subject: Digestion Digest, Vol 26, Issue 6
>
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> Today's Topics:
>
>     1. Re: Biogas from Begonia, Chrysanthemum and Poinsettia
>        (Anand Karve)
>     2. Re: Biogas from Begonia, Chrysanthemum and Poinsettia
>        (Vianney tumwesige)
>     3. Larger Messages (Paul Harris)
>     4. Re: Biogas from Begonia, Chrysanthemum and Poinsettia
>        (Anand Karve)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 15 Oct 2012 06:25:18 +0530
> From: Anand Karve <adkarve at gmail.com>
> To: For Discussion of Anaerobic Digestion
> 	<digestion at lists.bioenergylists.org>
> Subject: Re: [Digestion] Biogas from Begonia, Chrysanthemum and
> 	Poinsettia
> Message-ID:
> 	
> <CACPy7SfTWTjAOzSbR6Yz=cOErhL76q0q81RVEZGwZi8KUATPgw at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Dear Mr. Tumwesige,
>
> just chop up the material and feed it into the biogas plant. Everything
> except the lignin would be turned into biogas. We regularly use green
> leaves as feedstock. The midribs and veins accumulated in the biogas
> plant
> as undigested debris are removed by opening a drain valve at the bottom
> of
> the biogas plant.
> Yours
> A.D.Karve
>
> On Sun, Oct 14, 2012 at 1:43 AM, Vianney tumwesige
> <trustvianney at gmail.com>wrote:
>
>> Dear All,
>>
>> I recently visited a floriculture farm which produces about ten
> different
>> crops on the farm, however, there are three main crops i.e.poinsettia,
>> begonia and chrysanthemum.
>> These 3 crops generate about 2 tons of waste per week, though other
> crops
>> have a small waste content. I have attached pictures of the generated
>> waste. The idea is to produce
>> biogas from this waste. I have not dealt with floriculture waste, I
> will
>> be glad to get your advise.
>>
>> Thanks
>>
>> --
>> Vianney Tumwesige
>> Director - Green Heat (U) Ltd
>> P.O. Box 10235
>> Kampala-Uganda
>> 256 (0) 71 237 9889
>> www.greenheatinternational.com
>>
>> "The more people are self sufficient in cooking fuel, the more
> personal
>> and financial freedom they have." - Emma Casson
>>
>>
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>> for more information about digestion, see
>> Beginner's Guide to Biogas
>> http://www.adelaide.edu.au/biogas/
>> and the Biogas Wiki http://biogas.wikispaces.com/
>>
>>
>>
>