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

Jessica comes home

Northern B.C. showed their support by lining Hwy 16 as Jessica Patrick’s body returned to Smithers.

Non-certified teachers help fill shortage in Hazelton

Six non-certified teachers hired to help fill 50 full-time equivalent slots in Hazelton and Kitwanga

Mobile complaint team coming to B.C.’s northwest

Ombudsperson’s office wants to hear from wronged residents.

Family invites community to gather by Hwy 16 to honour Jessica Patrick

Smithers teen Jessica Patrick’s family say they are bringing her body home.

Convicted animal abuser Catherine Adams faces breach of probation charge in Quesnel

Adams is scheduled to consult counsel in Quesnel Oct. 9, after breaching ban from owning animals

VIDEO: Neighbours fear impact of B.C. tent city residents

Greater Victoria residents opposed to campers voice concerns at provincial campground

Browns beat streak, win first NFL game in 635 days

Baker Mayfield erased any doubts about why the Browns selected him with the No. 1 overall pick

New silver collector coin features Indigenous dancer

New silver collectors coin captures fast-paced energy of an Indigenous powwow

VIDEO: Replica Haida totem pole raised at B.C. park

‘Reconciliation ceremony’ will include SFN leaders, provincial politicians

Several more days before salvage of barge can begin on Haida Gwaii

The barge and lodge broke away from their moorings in high winds on Sept. 8 and ran aground.

B.C. woman with autism has scooter stolen from SkyTrain station

Kayla Polege purchased scooter after ‘shutdowns’ on transit

Off Nova Scotia, a bid to ‘unravel the mystery’ of great white sharks

The question: Is Nova Scotia the second mating site for Atlantic white sharks, something scientists say could be key to protecting the endangered species.

Man arrested after carjacking, collision, pepper spray attacks in Vancouver

Vancouver police say one man is in custody after a chaotic scene of events in the downtown core

Canadian investigator says World Anti-Doping Agency got a bad deal from Russia

A Canadian lawyer says the World Anti-Doping Agency rushed into accepting a bad deal by reinstating the country’s drug-testing program.

Most Read