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

The 21st annual Japanese Cultural Fair streams online Oct. 24 from noon to 3 p.m. (Facebook/Victoria Nikkei Cultural Society)
Esquimalt’s Japanese Cultural Fair takes tastes, experiences and cultures online

21st annual free event streams Saturday, Oct. 24 starting at noon

Kwick’kanum (Eric Pelkey), a hereditary chief of the Tsawout Nation, addressed the crowd that gathered at Mount Newton Cross Road and Highway 17 on Oct. 23. (Devon Bidal/News Staff)
UPDATED: Pat Bay Highway reopens after rally supporting Mi’kmaq fishing rights

Supporters call on government to recognize Indigenous treaty rights

The Baynes Sound Connector cable ferry. Black Press file photo
Baynes Sound Connector delayed due to emergency call

Paddleboarder was in distress near Union Bay Thursday

Premier John Horgan and Rob Douglas, BC NDP candidate for Cowichan Valley, meet with Cowichan First Nation elders, as they demonstrate spearfishing along the river. (Submitted)
Horgan acknowledges A&E sector hit hard by COVID-19, but showing signs of recovery

Hollywood North doing better than Hollywood South, Horgan says

B.C. provincial health officer Dr. Bonnie Henry gives a daily briefing on COVID-19 cases at an almost empty B.C. Legislature press theatre in Victoria, B.C., on March 25, 2020. (Don Craig/B.C. government)
B.C. sees 223 new COVID-19 cases, now 2,009 active

Two new care home outbreaks in Surrey, Burnaby

100 Mile Conservation officer Joel Kline gingerly holds an injured but very much alive bald eagle after extracting him from a motorist’s minivan. (Photo submitted)
B.C. driver thought he retrieved a dead bald eagle – until it came to life in his backseat

The driver believed the bird to be dead and not unconscious as it turned out to be

Chastity Davis-Alphonse took the time to vote on Oct. 21. B.C’s general Election Day is Saturday, Oct. 24. (Chastity Davis-Alphonse Facebook photo)
B.C. reconciliation advocate encourages Indigenous women to vote in provincial election

Through the power of voice and education Chastity Davis-Alphonse is hopeful for change

A Le Chateau retail store is shown in Montreal on Wednesday July 13, 2016. Le Chateau Inc. says it is seeking court protection from creditors under the Companies’ Creditors Arrangement Act to allow it to liquidate its assets and wind down its operations.THE CANADIAN PRESS/Ryan Remiorz
Clothing retailer Le Chateau plans to close its doors, files for CCAA protection

Le Chateau said it intends to remain fully operational as it liquidates its 123 stores

Green party Leader Sonia Furstenau arrives to announce her party’s election platform in New Westminster, B.C., on October 14, 2020. THE CANADIAN PRESS/Jonathan Hayward
B.C. Green party says it’s raised nearly $835,000 in 38 days

NDP Leader John Horgan is holding his final virtual campaign event

U.S. border officers at the Peace Arch crossing arrested two men on California warrants this week. (File photo)
Ottawa predicts system delays, backlogs unless court extends life of refugee pact

Canada and the United States recognize each other as safe places to seek protection

BC Liberal leader Andrew Wilkinson,  BC NDP leader John Horgan and BC Green leader Sonia Furstenau. (File)
B.C. VOTES 2020: Climate change and sustainability promises from the parties

Snap election has led to a short campaign; here’s the lowdown on the platforms

Conservative member of Parliament Michelle Rempel Garner, left to right, Conservative Leader Erin O’Toole and Conservative Deputy Leader Candice Bergen arrive to hold a press conference in Ottawa on Thursday, Oct. 22, 2020. THE CANADIAN PRESS/Sean Kilpatrick
No-confidence showdown over sweeping Tory motion on government handling of pandemic

The Conservative motion is to be put to a vote Monday and has the support of both the Bloc Québécois and NDP

Most Read