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

South Cariboo politicians talk UBCM highlights

Fire Safety Act ‘a very heated topic’

TNG block roads, question gov’t on moose hunt

Chief Joe Alphonse confirmed Thursday they’ve deactivated the Raven Lake Road and the Mackin Creek Road just before the Island Lake turnoff

UPDATE: Chief explains TNG position on road blocks, moose hunt

Members of the Tsilhqot’in Nation are making good on their promise

100 Mile Community Hall at risk

Lack of membership, leaders may spell end of Community Club

Fashion Fridays: Rock some animal print

Kim XO, lets you in on the latest fall fashion trends on Fashion Fridays on the Black Press Media Network

Horvat leads Canucks to 4-3 shootout victory over Kings

Vancouver dumps L.A. in NHL pre-season contest

Update: Search called off for missing plane between Edmonton and Chilliwack

Search efforts were concentrated along the Highway 5 corridor between Valemount and Kamloops

Why Whistler for ski jumping in 2026? Calgary proposal gets pushback

Calgary 2026 proposes re-using the 2010 ski jumping venue Whistler for that sport and nordic

VIDEO: Hundreds line highway as family brings home body of B.C. teen

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

Despite progress, threat of 232 tariffs dominates NAFTA negotiations

Any deal is seen to require congressional approval before Dec. 1 to survive new Mexican government

B.C. MP Todd Doherty receives award for saving man who collapsed on a plane

Conservative MP was flying from Vancouver to Prince George, B.C., in June last year

Alleged border jumper from Oregon facing 2 charges after police chase in B.C.

Colin Patrick Wilson charged with dangerous operation of motor vehicle, flight from a peace officer

More than 35 B.C. mayors elected without contest

No other candidates for mayor in the upcoming local election in 22 per cent of B.C. cities

Most Read