This entry was posted by Sunday, 13 October, 2013
Read the rest of this entry »
Cartoon about turning sewage into hydrogen fuel



Wastewater contains lots of energy. It’s a shame. We could use that energy.

Here’s the thing.

Someone – Yat Li, a professor at  the University of California – came up with a way to get the energy back from wastewater and, at the same time, clean up the water. His team’s energy reaping device takes in sunlight and wastewater and puts out hydrogen gas.

Very “Spaceship Earth”, right?

Does it work?

It seems to. The prototype worked. It was more or less a glorified lab experiment but the developers feel confident that it can be scaled up for commercial use.

But your car won’t run on hydrogen. The main use of hydrogen fuel is in fuel cells which convert it to electricity. Me? I would love a fuel cell standby generator. If the power goes down, I stay up. But my wife would k-i-l-l me if I blew $25,000 on a clean, quiet fuel cell generator just in case the lights ever flicker. So, although we know how to do this stuff, we have to solve some practical problems, lower manufacturing costs, and design a distribution system before fuel cells become common.

I think Dr, Yat Li is on to something. If it is priced right,  his energy reaper could be great – at least in areas with abundant sunshine. But it’s just a piece of the puzzle of a hydrogen economy.

Li’s study is published in ACS Nano and, by the way, for a nice overview of what’s up with hydrogen, have a look at Hydrogen Fuel News

– – – –

The drawing is mine.



  1. Forecasting is even more flexible, and companies may prepare forecasting in any manner,
    using any standards they like. Image matters, and not
    because people should ‘be pretty’, but because ‘people should project pretty’;
    however you look on the outside will affect the way you are perceived;
    who knows, maybe you’ll loose perfect opportunities to make friends or meet someone
    special just because your clothes make you look dirty, sloppy or slutty.
    This particular process involves the affected person to use chin wrap around the affected area for
    a particular time period on a regular process.
    The best way to blast through this stall point, is to increase
    your cardio performance a bit. Complex multi-joint excercises are essential for bodybuilding, because they recruit
    blood flow and hormone production in a way that single joint exercises cannot.

  2. You can save time, effort as well as expenses if you are going to buy these subscribers.
    And so, how to find these feedback along with what usually
    are all of these looks Human spoken communication is not thoughts.
    Utilizing this kind of message for your mobile marketing campaign is beneficial because all cell
    phones can receive it. It makes this a lot easier to keep
    your videos prepared and keep track of their views. The overall
    size of the i – Phone’s HD 720p videos would be quite large and would use a fair amount of the data allowance,
    which may cause a backlash from i – Phone users.

  3. ?i to all, how is all, I think every one is getting more from this
    web site,and yoj? view? are pleasant in support of new users.

  4. Great delivery. Solid arguments. Keep up the good

  5. For wine lovers, this restaurant in Mimosa Clark Freeport Pampanga is a treat with its
    award winning 3000-line wine lists that contain not only the famous
    labels but also connoisseurs’ choice of fine vintage wines.
    All dishes were artfully plated and wonderfully executed.
    Express your rebellious selves and hip sense of fashion through us.

  6. I think this is among the most important information for me.

    And i am glad reading your article. But should remark on some general things, The website style is great, the articles
    is really nice : D. Good job, cheers

  7. Very great post. I simply stumbled upon your blog and wished to say that
    I’ve really enjoyed surfing around your weblog posts. In any case I’ll be subscribing in your feed and I am hoping you write once
    more soon!


  1. personal trainers chandler arizona

Leave a Reply