Farm manure could be viable renewable energy source, Canadian researchers say

A chemical reaction in the converter would produce methane from carbon dioxide in the biogas

Researchers at an Ontario university say farm manure could be a viable source of renewable energy to heat homes.

University of Waterloo scientists say they are developing technology to produce natural gas from manure so it can be added to the existing energy supply system for heating homes and powering industries.

The proposal would eliminate harmful gases released by naturally decomposing manure when it is spread on farm fields as fertilizer.

They say it would also partially replace fossil natural gas, a significant contributor to global warming.

Chemical engineering professor David Simakov says the technology could be viable with several kinds of manure, particularly cow and pig manure, as well as at landfill sites.

In addition to being used by industries and in homes, the researchers say renewable natural gas could replace diesel fuel for trucks, another major source of greenhouse gas emissions.

“There are multiple ways we can benefit from this single approach,” Simakov said Thursday in a statement. “The potential is huge.”

To test the concept, researchers built a computer model of an actual 2,000-head dairy farm in Ontario that collects manure and converts it into biogas in anaerobic digesters.

Some of that biogas is already used to produce electricity by burning it in generators, reducing the environmental impact of manure while also yielding about 30 to 40 per cent of its energy potential.

Researchers want to take those benefits a significant step further by upgrading, or converting, biogas from manure into renewable natural gas.

That would involve mixing it with hydrogen, then running it through a catalytic converter. A chemical reaction in the converter would produce methane from carbon dioxide in the biogas.

Known as methanation, the process would require electricity to produce hydrogen, but that power could be generated on-site by renewable wind or solar systems, or taken from the electrical grid at times of low demand.

The net result would be renewable natural gas that yields almost all of manure’s energy potential and also efficiently stores electricity, but has only a fraction of the greenhouse gas impact of manure used as fertilizer, the Waterloo researchers said.

“This is how we can make the transition from fossil-based energy to renewable energy using existing infrastructure, which is a tremendous advantage,” said Simakov, who collaborates with fellow chemical engineering professor Michael Fowler.

The modelling study showed that a $5-million investment in a methanation system at the Ontario farm would, with government price subsidies for renewable natural gas, pay for itself in about five years, the researchers said.

Peter Cameron, The Canadian Press

Like us on Facebook and follow us on Twitter.

Just Posted

Cherry Creek Shootout is a family affair

Alberni Men’s Club opens on Sunday

Kinder Morgan protest planned for Port Alberni

Protest is part of a nationwide movement on Friday, March 23

Get emergency prepared with workshop at Capitol Theatre

Emergency preparedness workshop will take place on Friday, Mar. 23

Beaver Creek home destroyed in early morning fire

A house on Beaver Creek Road and Wadena Road caught fire early Wednesday morning

BIZ BEAT: The Power of friendship leads to the Power of Three

Holistic health services available at the Studio on Third

Alberni Valley Curling Club hosts Mixed Bonspiel

Bonspiel is more than just a sporting event

B.C. Scientists witness first-ever documented killer whale infanticide

“It’s horrifying and fascinating at the same time.”

Charges formally laid against Nanaimo city manager

City of Nanaimo CAO Tracy Renee Samra charged with fear of injury/damage by another person

Okanagan Falls winery showing international photo project

Liquidity Wines will be sole Canadian show of National Geographic’s Photo Ark

Lawyer for one suspect in beating of man with autism says he’s not guilty

Ronjot Singh Dhami will turn himself in, lawyer said

Liberals awarded $100,000 contract to man at centre of Facebook data controversy

Christopher Wylie says his voter-profiling company collected private information from 50 million Facebook users

Facebook’s Zuckerberg admits mistakes in privacy scandal

Zuckerberg admits to privacy scandal involving a Trump-connected data-mining firm, but no apology

UPDATE: Former B.C. city councillor sentenced nine months for sexual assault

Dave Murray, convicted this past fall, hired a private investigator to intrude on the victim’s life.

Online threat to U.S. high school traced to Canadian teen

A 14-year-old girl has been charged in connection with an online threat against a high school

Most Read