Comments on: Biogas Construction and Production from Farm and Animal Wastes

By: G e r r y

G e r r y — Sun, 06 Sep 2009 01:05:56 +0000

Many believe that with a biogas digester — facilities like poultry dressing plants, slaugther houses & abattoirs do not need Waste Water Treatment (WWT) systems as digesters replace WWTs. They are wrong but not completely wrong.

Simple lagoons used as WWTs produce biogas that escape into the atmosphere. As biogas is a potent greenhouse gas (GHG) that contribute to the worsening Climate Change & Global Warming problem, that is like releasing poison into the air.

Complex & compact WWTs produce less biogas because they are aerated. Biogas production needs an anaerobic or “no-air” environment.

In the past, installing a biogas digester was done to collect biogas for use as fuel. That has changed.

Now biogas digesters are used to capture biogas & keep it from escaping into the atmosphere. Doing so still provides a fuel that can replace expensive petroleum fuels. But even if the biogas is just “flared”, the project qualifies as a Clean Development Mechanism (CDM) of the United Nations Framework Convention on Climate Change (UNFCCC) & can receive substantial carbon credits (in monetary form as an incentive, subsidy or reward) — for doing something good for the world.

I apologize for the long reply. You have a good question & it deserved a good answer. Finally, I suggest you ADD a biogas digester to your WWT. Your WWT will operate more efficiently as it will have less work to do, you will get biogas for use as a fuel & you could be “rewarded handsomely for doing something good.”

Email me at: biofuelswork@gmail.com or browse: http://www.biofuelswork.com that has been the source of information presented above.

By: G e r r y

G e r r y — Sun, 06 Sep 2009 00:27:45 +0000

Simple biogas digesters are best fed with plant (high carbohydrate & starchy) wastes or by-products like vegetable scraps, grass cuttings & leaves; food wastes like rice & bread; and, manures from animals fed with grass & grains.

We recommend pig, carabao, cow & poultry manure as they are abundant & do not need to be chopped or shredded like plant & food wastes.

Digesters fed with high protein stuff as what you have (20-25% cp) reportedly produce more biogas but they require more complex digesters as pH is usually high & fluctuating that it has to be monitored & managed.

All digesters work best at neutral or pH=7 & ambient temperatures as they are in the Philippines. In temperate countries digesters have to be warmed when it is cold.

I hope this information helps. Please also check our website that has been the source of the information described above.

By: teodorico b. olito

teodorico b. olito — Fri, 28 Aug 2009 13:22:07 +0000

we are consultants for poultry dressing plants. feathers, mixed with manure and some innards are wastes we generate. we plan to dissolve it into a slurry using some enzymes. resulting product is more or less 20-25% cp with ph 10+/-. can we feed it to the digester to get biogas? pls send reply to my email address: dexter_olito@yahoo.com. thanks

By: robert kho

robert kho — Mon, 03 Aug 2009 12:34:07 +0000

I am just wondering how much chicken dung is needed to produce bio-gas. I am working in a poultry dressing plant as its plant manager, although we do have quite a sizable quantity of chicken dung aside from other organic waste, e.g. feathers, blood and innards. We either truck it to near by rendering plant for rendering processes and for them to dispose what they can not render.
Given, that we are using diesel fired boiler to produce hot water from steam for scalding, we are faced with the stiff cost considering the high cost of diesel fuel, while we manage to convert to firewood/coconut shell fed boiler, we still look at the possibility of producing bio-gas from chicken dung and other wastes that we have. Our neighboring dressing plant manage to operate a bio-generator however,they have to truck in additional animal waste to produce these bio-gas adding to the increasing BOD and very poor quality of their waste water?
I would like to know your opinion on this?
Thank you and there be more Pinoy Inventors herein!
Mabuhay!

robertkho

By: mikhaela

mikhaela — Sun, 26 Jul 2009 13:42:31 +0000

Salamat, nakatulong to sa research namen. :P \m/

By: FAGORALA MUYIWA

FAGORALA MUYIWA — Tue, 14 Jul 2009 18:07:26 +0000

Your write up was very informative but will want to know if there is a means of extracting liquid Ammonia from poultry litters.

By: nelson

nelson — Tue, 14 Jul 2009 15:34:46 +0000

sir, what are some modification to make the plastic drums as a digester? is the rice straw is as effective as the manure?

more power,
nelson

By: Leo

Leo — Tue, 07 Jul 2009 02:04:44 +0000

@jim and jun, click page 2 for diagrams and drawings.

By: jun

jun — Mon, 06 Jul 2009 03:24:57 +0000

I have an existing piggery and I would like to know the complete details on how to construct from digester to methane storage container. Maybe complete drawings and materials details to make me build it safe and effective way. Since I’m still working overseas and I need it during my vacation time before this year ends.

Thanks a lot

By: jim

jim — Sun, 05 Jul 2009 14:54:19 +0000

sir,

good day! please ako rin, kailangan ko ng diagram at klase ng materials.

maraming salamat po.

By: Leo

Leo — Wed, 01 Jul 2009 03:37:22 +0000

@jamaki, noel, JOTac, randy just follow all the links in Page 2 for additional info. (drawings, diagram, bill of materials, etc.)

By: Noel Orejo

Noel Orejo — Mon, 29 Jun 2009 07:33:49 +0000

pls send me a simple diagram of HBS

By: JOTac

JOTac — Sun, 28 Jun 2009 12:15:03 +0000

can you pls. send me a design diagram on how to construct this simple biogas,may maliit na piggery po kasi ako gusto ko lang masubokan. tanks.

By: jamaki

jamaki — Sun, 28 Jun 2009 07:48:40 +0000

pls have a copy of module…aim jamaki c sangcap..public teacher in high school
i teach tle and mapeh…i think this will help my student…

By: Randy

Randy — Sun, 28 Jun 2009 06:16:57 +0000

Its a very good idea. There is a conversion of waste into energy which we need in our daily living. Im preparing myself to put up a backyard hog raising. I want to minimize odor so as not to disturb my neighbor. And i want this idea to apply on my site. Can you give me the details how to contruct this Home Biogas System. Thank you for a valuable information.

More Power,

Randy