Posts Tagged ‘sewage’

Hydrogen From Urine

Tuesday, March 15th, 2011

A hydrogen economy would be great.  We could potentially have a limitless supply of energy because it is one of the most abundant elements on the planet while the only by product of its combustion would be water.

Currently a huge detractor is that hydrogen is expensive to produce.  Water is very stable, and it takes a lot of energy to break apart water molecules into hydrogen and oxygen.  Gerardine Botte of Ohio University has created a new catalyst that can extract the hydrogen from urine. read more »

Hooray Sewage!

Friday, October 10th, 2008

Sewage seems to be in the news quite a bit in the last few weeks. This time scientists have figured out a way to produce cheap hydrogen using the stuff we flush down the toilet. Oregon State University researchers have figured out a way to produce hydrogen at a lower cost than conventional electrolysis.

The technology works by putting microorganisms from sewage to an anode’s surface and then degrading the waste in the swage using a battery. The waste decomposes and leaves protons that move to the cathode and combine with electrons producing hydrogen. It is predicted that this technology will drive the cost of hydrogen down to read more »

Sewage + Landfill = Green

Tuesday, October 7th, 2008

According to a new study done by Viridis Waste Control LLC, dumping sewage into a landfill can accelerate the biodegradation of the trash. Faster biodegradation of garbage means that landfills will have a longer lifetime and more land will not have to be used for a landfill.

Both sewage and the organic matter in garbage decompose and produce methane on their own, resources that are both already tapped for their energy potential at many waste facilities. This occurs because anaerobic microorganisms in the waste process the organic matter and produce methane as a by-product. The greater the amount of bacteria and organic matter, the faster the decomposition.

Landfill garbage breaks down relatively slowly due to the small amounts of bacteria and the separation of the organic matter by plastic bags and other non-degradable materials. While landfills do promote decomposition and the production of methane, this process is quite slow. With the Septage Bioreactor Landfill technology, septage is blended with ground garbage, allowing the organic matter to decompose much faster than it otherwise would. This creates large quantities of methane in a short period of time, which can be tapped for fuel. The other advantage of this technology as a fuel source, is it produces methane constantly as long as there is organic material fed into it. We have no shortage of garbage or sewage, so this will create a very plentiful and reliable source of energy.

The accelerated decomposition also results in less space being used in the landfill, extending its lifespan, as well as reducing groundwater leaching or runoff. On a similar note, separating septage from the rest of the sewage flow would allow for much smaller, decentralized wastewater treatment facilities since only greywater would be left; a substance that can be easily and quite effectively treated with natural systems.

via greengeek