Cow Poop Could Power the Internet

Zelig

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"One cow poops more than 120 pounds of manure every day. A study from the EPA published in 1998 showed that U.S. dairy cows produced 54 billion pounds of manure annually. Normally the excrement is bulldozed into holding ponds, where it remains until it's used as fertilizer.

But instead of that poop going to waste (pun intended), cow manure is increasingly being looked at as a source of energy to power data centers.
For cow poop to power a server, it first has to become a type of biofuel called biogas. Planet Green produced a thorough explanation, but the process works like this: the poop is collected from the cows, and then subjected to an anaerobic digestion process that results in a whole bunch of methane gas. That methane gas can replace natural gas or diesel fuel in generators that produce electricity.

It's a type of energy that researchers say could one day account for three percent of the country's electricity usage. That's not much, since it takes 10,000 cows to produce enough manure to power a small computer center for a bank. It's also probably not enough of a reason to start raising cows, but for farmers, it's a good way to get some extra cash out of something that used to be worth nothing.

Most farmers that participate, sell their manure to a specialized biogas plant rather than build a system of their own. It would cost a dairy farmer about $5 million just for the equipment in a biogas system, plus $30,000 to run it each year.

Cow poop as electric energy doesn't just make sense economically, it's also better for the environment. Whether we want them to or not, cows are going to keep belching and pooping more than 26 gallons of methane each day into the atmosphere. What's worse, methane is 21 times more damaging to the environment than carbon dioxide.

Hewlett-Packard just released a study called "Design of Farm Waste-Driven Supply Side Infrastructure for Data Centers" that said a dairy farmer could rent out land and power to technology companies and get a return on the investment in less than two years. HP has not constructed any of its own manure-burning systems yet, but researchers say that may soon change."

http://news.discovery.com/tech/cow-poop-could-power-the-internet.html

Do you think using cow poop for electricity is a good idea?

Is there much potential for cow poop production in your area?

Is the smell of cow poop an acceptable trade-off for clean energy?

What about human poop?
 
Sounds a bit like BS science to me.

Seriously though - what are the emissions from burning methane? I'm guessing CO2 is released.
 
Sounds a bit like BS science to me.

Seriously though - what are the emissions from burning methane? I'm guessing CO2 is released.

Yeah I was wondering what is worse: the methane being allowed to collect in the atmosphere, or the release of CO2?


The main yeah for this is that it is a renewable energy supply, as long as the climate is friendly to growing the grass that the cows will eat.

Also this will probably require some infrastructure funding to get the biogas concentrated. Plus it's a chemical engineering problem, so there's a need to optimize the reaction.

Landfills already produce natural gas, I'm assuming this is similar right?

Assuming that it is caused by fermentation by bacteria in anaerobic pockets of the landfill, then yes.
 
Seriously though - what are the emissions from burning methane? I'm guessing CO2 is released.

Yes, but the cow got the carbon in the methane from the grass it ate. And that grass got the carbon from the CO2 it absorbed from the air during photosynthesis. So by burning cow produced methane you're not adding any CO2 that hasn't been in the air before. And if you would just let the manure rot, bacteria would release the CO2 anyway. So you could say it is carbon neutral. It is different with fossil methane: If you burn that, you're adding CO2 to the atmosphere that wouldn't have been added if you had let the methane stay underground.

But if you use cow manure as energy source, you cannot use it as fertilizer and you would have to resort to industrially produced fertilizers, which have their own bunch of environmental problems.

The one thing that I don't get is: Why use it for data centers? Apart from HP trying to make data centers appear green, this doesn't make any sense. Most renewable energy sources have the problem of energy storage. Solar and wind energy is generated when the sun is shining or the wind is blowing and that usually does not always coincide with when you need that energy. And storing electricity on a large scale is very hard. With methane you already have the energy in a high energy density, stable medium which can be easily stored. So on a grand scale it would make much more sense to save up the cow methane to supply energy during burst times, or when other sources don't produce much energy.
 
Sounds a bit like BS science to me.

Seriously though - what are the emissions from burning methane? I'm guessing CO2 is released.

That joke had to told. Another variant is that the whole internet is already being powered by BS.

This is interesting to see what possibilities we have for waste products. But I am thinking the best thing for Cow dung is what nature intended it for, manure, since that does help with farming by giving back nutrients to ground. I would rather that than using it for power. Also would it smell when it burns?
 
Sounds like a stupid plan.

If you want inefficient energy just grow biofuel. As opposed to feeding biofuel to animals to crap it out & then process it from there.

Will just give factory-farmers an excuse to call themselves "green".

Cow poop as electric energy doesn't just make sense economically, it's also better for the environment. Whether we want them to or not, cows are going to keep belching and pooping more than 26 gallons of methane each day into the atmosphere. What's worse, methane is 21 times more damaging to the environment than carbon dioxide.
Whether we want them to or not? :confused: It's entirely up to "us". Eat less meat & dairy & less cows will be bred, lets cows = less methane.

Cow electricity is inefficient & bad for the environment (since it encourages support of mass-animal-rearing). In short, it stinks.
 
But if you use cow manure as energy source, you cannot use it as fertilizer and you would have to resort to industrially produced fertilizers, which have their own bunch of environmental problems.

.

This. Manure does not 'go to waste' these days, and I think it is much more efficient to use it as fertilizer than to produce biogas.
 
Methane can be extracted from manure without changing the value of the manure as fertilizer.
 
Methane can be extracted from manure without changing the value of the manure as fertilizer.

Doesn't it reduce that all important organic matter? Or is that just likely to volatolize anyhow?

And yes, Perf, we all are contributing to the global stockpile of manue :lol:
 
As I understand it, if the manure is used for fertilizer, the methane goes into the air in any case. So why not capture it first?
 
As I understand it, if the manure is used for fertilizer, the methane goes into the air in any case. So why not capture it first?

I'd probably vote to grab the methane in a fermenter and store it as a strategic reserve.
 
As I understand it, if the manure is used for fertilizer, the methane goes into the air in any case. So why not capture it first?

Depends on how you encorporate it. After all, if it just sits on the surface, lots of the nitrogen (the most important fertilizer component) volatilizes (as NO2) or runs off (NH4)
 
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