Major Advance in Generating Electricity From Wastewater

January 24, 2013 | By | 2 Replies More

Aaron Jackson, Guest Writer
Waking Times

Engineers at Oregon State University have made a breakthrough in the performance of microbial fuel cells that can produce electricity directly from wastewater, opening the door to a future in which waste treatment plants not only will power themselves, but will sell excess electricity.

The new technology developed at OSU uses new concepts — reduced anode-cathode spacing, evolved microbes and new separator materials — and can produce more than two kilowatts per cubic meter of liquid reactor volume — 10 to 50 more times the electrical per unit volume than most other approaches using microbial fuel cells, and 100 times more electricity than some.

This technology cleans sewage by a very different approach than the aerobic bacteria used in the past. Bacteria oxidize the organic matter and, in the process, produce electrons that run from the anode to the cathode within the fuel cell, creating an electrical current.

Almost any type of organic waste material can be used to produce electricity — not only wastewater, but also grass straw, animal waste, and byproducts from such operations as the wine, beer or dairy industries.

The researchers say this could eventually change the way that wastewater is treated all over the world, replacing the widely used “activated sludge” process that has been in use for almost a century. The new approach would produce significant amounts of electricity while effectively cleaning the wastewater, they suggest.

“If this technology works on a commercial scale, the way we believe it will, the treatment of wastewater could be a huge energy producer, not a huge energy cost,” said Hong Liu, an associate professor in the OSU Department of Biological and Ecological Engineering. “This could have an impact around the world, save a great deal of money, provide better water treatment and promote energy sustainability.”

Experts estimate that about 3 percent of the electrical energy consumed in the United States and other developed countries is used to treat wastewater, and a majority of that electricity is produced by fossil fuels.

The system also works better than an alternative approach to creating electricity from wastewater that is based on anaerobic digestion that produces methane. It treats the wastewater more effectively, and doesn’t have any of the environmental drawbacks of that technology, such as production of unwanted hydrogen sulfide or possible release of methane, a potent greenhouse gas, the researchers believe.

The OSU system has now been proven at a substantial scale in the laboratory, Liu said, and the next step would be a pilot study. A good candidate, she said, might initially be a food processing plant, which is a contained system that produces a steady supply of certain types of wastewater that would provide significant amounts of electricity.

Once advances are made to reduce high initial costs, researchers estimate that the capital construction costs of this new technology should be comparable to that of the activated sludge systems now in widespread use today — and even less expensive when future sales of excess electricity are factored in.

The approach may also have special value in developing nations, where access to electricity is limited and sewage treatment at remote sites is difficult or impossible as a result.

The ability of microbes to produce electricity has been known for decades, but only recently have technological advances made their production of electricity high enough to be of commercial use. OSU researchers reported several years ago on the promise of this technology, but at that time the systems in use produced far less electrical power.  Continued research should also find even more optimal use of necessary microbes, reduced material costs and improved function of the technology at commercial scales, OSU scientists said.

REFERENCES:

About the Author

Aaron Jackson is a writer for the excellent site, Exposing The TruthPlease visit them on Facebook, here.

This article is offered under Creative Commons license. It’s okay to republish it anywhere as long as attribution bio is included and all links remain intact.

~~ Help Waking Times to raise the vibration by sharing this article with the buttons below…

Tags: , , , , , ,

Category: All Original Articles, Business, Community, Contributors, Earth, Energy, Environment, Guest Writers, Science, Society, Technology, Time & Space, Uncategorized

Comments (2)

Trackback URL | Comments RSS Feed

  1. dimitri says:

    Boo! This is going to cost everybody big time. The ad at the end of the article suggests that Tesla’s electricity is free. Why not demand that system right now?

  2. noem says:

    Somebody put here link with “Tesla Secret”, which is a scam don’t buy that crap.

Leave a Reply

Must Watch Videos

Link Found Between Food Allergies and Farm Antibiotics

Link Found Between Food Allergies and Farm Antibiotics













Dr. Mercola
Waking Times

Food allergies affect an estimated 15 million Americans, including one in 13 children. Statistics indicate something strange is afoot, as food allergies in children rose by 50 percent between 1997 and 2011 alone.

Similarly, in Great Britain one in three people are allergic to something, be … More

September 18, 2014 | By | Reply More
Drop Out and Simplify Your Life

Drop Out and Simplify Your Life













Zen Gardner, Guest
Waking Times

I was thinking about this very subject and sat down to put some notes together when I stopped to moderate comments on the site. And here was this synchronistic and very wise comment from Soliel:

Despite all the fear-mongering out there, many have remained … More

September 17, 2014 | By | 2 Replies More
Coconut Water is One of the Greatest Nutritional from Nature

Coconut Water is One of the Greatest Nutritional from Nature













Karen Foster, Prevent Disease
Waking Times

The first documented use of coconut water dates back just a few centuries, however it’s safe to assume humans have been enjoying this supreme hydrator as long as we’ve been around coconut palms. Here’s why young coconut water has one of the highest sources … More

September 17, 2014 | By | 2 Replies More
How Monsanto and Big-Ag are Fighting Back Against Anti-GMO Activism

How Monsanto and Big-Ag are Fighting Back Against Anti-GMO Activism













Dr. Mercola
Waking Times

Between 2012 and mid-2014, Monsanto and the Grocery Manufacturers Association (GMA) successfully blocked GMO labeling legislation in over 30 states, at a price tag of more than $100 million.

These funds were received from the 300+ members of the GMA, which include chemical/pesticide, GE seed, and … More

September 16, 2014 | By | Reply More
A Letter To My Siblings

A Letter To My Siblings













Zen Gardner, Guest
Waking Times

A note from Zen: An answer to a question from awakening siblings about how have I kept up with world and American events being outside the US so many years. This is part of a discussion on world topics that we’ve been debating including More

September 13, 2014 | By | 5 Replies More

Activism Works

7 Ways Cannabis Legalization Has Already Benefited Colorado

7 Ways Cannabis Legalization Has Already Benefited Colorado













Jeff Roberts, Collective-Evolution
Waking Times

January 1st 2014 saw the opening of the very first cannabis shop in Colorado as the cultivation, manufacture and sale of the controversial plant became fully legalized. Since then, the state has seen a lot of promising results.

Laura Pegram of Drugpolicy.org wrote in her … More

September 16, 2014 | By | Reply More
Sweden Recycling 99 Percent Of Garbage, Edging Closer To Zero-Waste

Sweden Recycling 99 Percent Of Garbage, Edging Closer To Zero-Waste













April McCarthy, Prevent Disease
Waking Times

There’s a revolution happening in Sweden right now. Dubbed the “recycling revolution,” the Scandinavian country now recycles 99 percent of their garbage, edging closer to a zero-waste lifestyle, nationwide.

Wouldn’t it be great if no household waste was wasted? If each and every item … More

September 4, 2014 | By | 6 Replies More
Food as Medicine: How One Hospital Is Using Organic Produce to Help Heal Patients

Food as Medicine: How One Hospital Is Using Organic Produce to Help Heal Patients













Coach Mark Smallwood, EcoWatch
Waking Times

In 431 B.C. Hippocrates said, “Let food be thy medicine and medicine be thy food”

More than 2500 years later, we are inundated with advertisements boasting the latest, greatest cure-all super drug. From a young age, we learn that it doesn’t matter how or … More

August 23, 2014 | By | 4 Replies More
As Keystone XL Dominoes Fall, Time to Arrest Tar Sands Industry

As Keystone XL Dominoes Fall, Time to Arrest Tar Sands Industry













, EcoWatch
Waking Times

We’ve got this.

Thanks to the courageous and indefatigable efforts of pipeline fighters everywhere, the tide has finally turned on Keystone XL. As it becomes increasingly clear that Keystone XL’s northern leg is not going through, it is time to set our sights … More

August 4, 2014 | By | 2 Replies More
Seizing Control of Our Destinies

Seizing Control of Our Destinies













Julian Rose, Contributor
Waking Times

In 1381, at a time of great repression for the British agricultural work force, an extraordinary people’s revolutionary named Wat Tyler sprang to his feet and announced, “England should be a nation of self governing communities,” to which he added, “ No lord shall exercise … More

July 28, 2014 | By | 5 Replies More