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The Power of Sewage

Eridanis writes ""The waste you flush down the toilet could one day power the lights in your home. So say researchers at Pennsylvania State University who last week revealed they have developed an electricity generator fuelled by sewage." Hey, it seems that EA will have to create a new building for Simcity!"

29 of 305 comments (clear)

  1. Just doin' my part.. by grub · · Score: 5, Funny


    Let me at it after a night of Fort Garry Dark Ale and I'll power a city of 50,000 for 2 full days.

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    1. Re:Just doin' my part.. by Marc+Desrochers · · Score: 4, Funny

      So, are they going to wire the toilets to the power meter and reduce your rate accordingly?

    2. Re:Just doin' my part.. by RLW · · Score: 5, Funny

      The FDA needs to get with the Energy Department and add labeling that indicates the average Kw out put per serving on your favorite foods.

      Eventually 'Power Diets' (copyrighted by me here and now :-) will arrive; these will be geared toward symbiotic foods stuffs that eaten (and crapped) together produce the best power for you home. Yeah!

      Electric Bran Flakes! - the cereal that makes you regular and powers your day!

  2. America.. by msimm · · Score: 5, Funny

    The most powerful country ever!

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    1. Re:America.. by Anonymous Coward · · Score: 4, Funny
      "My opinion is subject to change without warning."

      Sen. Kerry? Is that you??

    2. Re:America.. by inteller · · Score: 5, Funny

      yes, but big fat americans can crap out bigger turds faster, so 1 american is equal to about 4 chinese.

  3. Well THAT explains... by goldspider · · Score: 4, Funny
    ...why the campus always smelled like shit!

    Seriously, I went to school there. I thought it was all of the surrounding farmland that contributed to the odor, but this is indeed news to me!

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  4. What if.. by Trystansr · · Score: 5, Funny

    you go on vacation or something? Would you have to pay someone to come over and use your bathroom to keep the fridge running?

    1. Re:What if.. by drooling-dog · · Score: 4, Funny

      I just want something I can shove up my ass to keep my laptop running...

  5. EA, eh? by Apostata · · Score: 4, Funny

    Quote: "Hey, it seems that EA will have to create a new building for Simcity!"

    Or at least have the raw materials for another of their games...

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  6. So much for... by Anonymous Coward · · Score: 5, Funny

    ..."clean" energy sources.

  7. slightly different approach.... by tanveer1979 · · Score: 4, Informative

    I am aware of Bio-Gas plants which are used in villages in India. The Animal waste is dumped into the "pit" Methane is released and it is used for cooking. But I guess this method is more efficent.
    Good for farms where lot of animal waste is there

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    1. Re:slightly different approach.... by qtp · · Score: 4, Informative

      Locate the plant where the waste is being treated, like they do already in Lithuania Germany and Oregon.

      You are already moving the sewage around as it is, so that expense is already there. The waste output of the biogas fermener is much safer than the sludge that existing sewage plants produce, and it can be further composted to produce safe, high quality, organic fertilizer.

      There are also existing farm waste facilities (as was previously discussed here on /.) and existing technology to tap land fills in the same manner. It's energy that can be easily converted to a usable, transportable form (electricity) that wopuld otherwise go to waste. The gasses that are being converted are greenhouse gasses (mostly methane) that are not readily sinkable, and the waste products from the fuel cell are only (easily sinkable) CO2 and water.

      The other implication of this technology that is less spoken about is that it decentralizes the source of energy away from the fossil fuel companies and spreads the profits closer to the community where the energy is being produced, either through lower costs for waste treatment, or through direct profit from the sale of the electricity if the facility is privately owned. This means lower costs for energy and lower trade deficit.

      It's a winning situation for those who live in communities that take advantage of this, and the only people who lose out are the energy companies.

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  8. Yes but... by paul_pick1 · · Score: 5, Funny
    The waste you flush down the toilet could one day power the lights in your home.

    Well, yes, but it would be pretty shitty lighting, wouldn't it?

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  9. It seems Tom Lehrer was right... by Rexz · · Score: 5, Funny

    Life is like a sewer: what you get out of it depends on what you put into it.

  10. Electricity from Waste by eples · · Score: 5, Informative

    Something similar has been around since the 50's called "digesters" that use natural waste and the methane byproduct to power generators. It may have been invented at Penn State as well, but they are expensive so there are only about 20 of them around the country.

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    1. Re:Electricity from Waste by ross.w · · Score: 5, Informative

      IAAWWE (I am a wastewater Engineer)

      Actually most sewage plants have a digester in them (or several).

      Most Sewage Treatment Plants that have anaerobic digesters (the kind that produce methane) simply flare the gas off, because the quantity of gas produced doesn't warrant the expense of setting up to re-use it.

      Seafield Sewage Works in Edinburgh, Scotland does though. It was completed in 2000. If you fly into Edinburgh airport over the Firth of Forth, you can see a row of six large pink tanks near the docks. These are the digesters at Seafield. (The reasons why they are pink are complex and architectural, not functional).

      Bondi STP in Sydney used to re-use methane for generating power the 1960s, but the the technology was primitive, and the sulphides in the gas made the engines expensive to maintain and they were abandoned.

      Now in Australia, with green energy credits on offer, many water authorities are having another look at making use of their methane.

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    2. Re:Electricity from Waste by ross.w · · Score: 4, Funny

      You have no idea how descriptions of my work can kill dinnertime conversation.

      I have often found myself having business lunches and having to change the subject, having realised what we were loudly discussing in a crowded restaurant.

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    3. Re:Electricity from Waste by kfg · · Score: 4, Informative

      Digesters have been around for about 100 years. During WWII with gas rationing they became quite common, one version even coming on a trailer you could pull behind your car while collecting manure, and then run your car from.

      During the gas crunch of the 70s digesters popped up all over the place and there was hardly an issue of Mother Earth News that didn't have some new design/application of a digester featured in it showing how you could power your farm/homestead on shitty methane.

      There are still thousands, perhaps tens of thousands, of digesters scattered across Americas rural areas. Virtually all of them are built by the owners out of scrap materials for nearly nothing.

      Perhaps there are only 20 of this expensive commercial variety. A lot of companies like to make money by taking old ideas that people in general have forgotten about, plate them in chrome, and sell them as the latest technology for a premium price.

      Go to the library. See if they've got back issues of Mother Earth News from the 70s and 80s. Lots of good digesters ideas in there, although often a bit crudely implimented.

      The mere idea of excrement for fuel energy goes back to God only knows how long. It's certainly prehistoric. The Plains Indian relied on Buffalo Chips for fuel, and the Indian Indian still does today.

      Latrine Officer was one of the most important posts in Napoleon's army. His job? To retrieve human excrement. It was too valuable an energy source to waste. They used it to be able to make their own gunpowder as they traveled, which is one of the reasons that Napoleon's armies seemed to be able to pull off almost magical feats of translating themselves from one location to another and arrive ready to fight.

      Shit is energy. We know that. We've always known that. We've known that that energy can be extracted as natural gases and used to run combustion engines and turn electric generators for over a century. It's news so old it's boring.

      It's even a reasonably viable way to go about making energy, if you live on a small farm with lots and lots of animals producing lots and lots of shit you need to do something with.

      For city dwelling humans, well, it will never be anything more than a suppliment to other forms of energy. Something you can use because it's there, but nothing to be relied upon.

      Why? Well, how much did you shit today? Does that amount of shit convert into the electricity you used?

      Not even close.

      You'll need a lot of other animals who don't watch TV shitting for you as well. Like on a farm, say.

      And nevermind the fact that most of the shit (including human) is more valuable as a fertilizer (which is where much of the treated sewage is going right now) than it is as a fuel, so you're invoking the whole food for fuel argument. It may be better to burn that fuel we can't eat, or use for food production, and eat the fuel we can.

      KFG

  11. Not with my excrement... by dj245 · · Score: 5, Funny

    If they try this with my excrement without a proper licence, I'll sue! Licences for my intellectual property can be bought for just $699. Sure, its shit, but its my shit. I thought about it, and my efforts went into creating it. Bofh Link

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  12. Eat your bean! by RDosage · · Score: 5, Funny

    "Dear, break out the refried beans, the lights are flickering again!"

  13. Reminds me of an article in Discover by MrPoopyPants · · Score: 5, Informative
    This article got me pretty excited about the future of waste/energy. I'd love to see those piles and piles of junk and biowaste turned into useful energy.

    The conspiracy theorist within me fears that these types of technologies will not take off because oil companies have so much power.

  14. Old News for those in rural areas by backtick · · Score: 4, Informative

    http://www.energy.state.or.us/biomass/digester/dig estech.htm

    Lots of places have these; I see someone say "There are only a few in production" fairly often, but this is incorrect; there are more and more every year. Dairy farms are using them in large numbers, but the city of portland has a fairly large one (see http://www.energy.state.or.us/biomass/fuelcell.htm )
    that processes the residue from 82 million gallons of wastewater a day.

    As an example of the economics, see:
    http://www.eco-farm.org/sa/sa_dairy_synopsis _diges ter.html#eco

    Payback in 6 years. Not bad, considering lots of places give grants, as these help cut down on groundwater pollution. You can have payback in 3 years, and then start making money on the juice you sell.

  15. Another Version of This Concept by G4from128k · · Score: 4, Interesting

    We discussed a similar high temperature conversion in the past. This alternative process uses high temperature/high pressure water to crack a wide range of complex molecules into simpler stuff. It can convert sewage, toxic waste, and animal byproducts into a mix of combustible hydrocarbons, salts, and water.

    The new Microbial Fuel Cell method sounds interesting, but I bet it fails in the field. I'd bet that nasty substances (the odd pulse of heavy metals, detergents, or drain cleaner) would poison the microbial catalysts in this new fuel cell.

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  16. Master Blaster Run Barter Town! by enrico_suave · · Score: 4, Funny

    heh... Mad Max 7 Way Beyond Thunderdome

    e,.

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  17. Uh. by bad+enema · · Score: 5, Funny

    That idea sounds pretty shitty if you ask me.

  18. Reality check by Spamalamadingdong · · Score: 4, Insightful
    51 KW from 100,000 people = 0.51 W/capita.

    You're not going to run even one room light from this. You could use it to keep your cell phone and PDA charged, but you could probably do that just as well with generators in the soles of your shoes and gain mobility in the bargain.

    (Yeah, I know everyone's playing this for yucks. You can see me as a wet blanket or a straight man, your choice.)

  19. OT question: Why not dual flush toilets in USA? by tetranz · · Score: 4, Informative

    In my former part of the world, nearly all toilets in homes are dual flush to save water. They have two buttons, one gives a half flush, the other a full flush. Its not rocket science to figure out when you need which. An american visitor had not seen this before.

    Now that I live in the US, I wonder why such technology doesn't exist here. It seems like a much better way to save water than the problematic 'low flush' toilets common the US.

  20. Not a completely new idea by Stonent1 · · Score: 4, Interesting

    When I was a kid, my dad worked as a mechanic at a sewage treatment plant. After the sewage comes in, it passes through a system called a digester where it sat. The fumes which were collected were mostly methane gas, that was pumped into giant diesel engines that ran generators that ran the digestion system that ran the engines that ran the... Oh dear I've gone cross-eyed. There was still some solid waste left behind however. It was loaded into large spreaders and spread out on large fields and then flattened out to dry. Though about 90% of the stink had gone local residents still complained. So they came up with an industrial perfume called Roto-ban that was sprayed on top to cover up the smell. Shortly after more people complained about the smell from the perfume than the waste, so they stopped using it. What was left over was collected and sold as industrial fertilizer. You could not legally (in the US) use it to fertilize vegitation used for human consumption, but you could use it to fertilize food used for animal consumption (and then they could legally sell the animals as food). So basically HAHAHA (pointing) You eat turds!