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

Vancouver Island wife brings husband back to life with CPR, thanks to 911 dispatcher

‘The only reason he was alive was that 10 minutes of CPR before paramedics got there’

Capitol Theatre in Port Alberni hopes to ‘raise the reds’

Lily Diotte of Swale Rock Cafe is fundraising to replace the theatre’s red curtains

Alberni’s development soccer program doubles in size

Development practice had hardly started, but there were already more than 30… Continue reading

Catalyst Paper to sell U.S. mills to Chinese company

Sale will allow company to focus on B.C. interests, says president Ned Dwyer

Alberni university zeroes in on disability and poverty

BY MIKE YOUDS SPECIAL TO THE NEWS The road to poverty can… Continue reading

Trans Mountain pipeline: How we got here

A look at the Kinder Morgan expansion, decades in the making

Giant beer tanks arrive in new B.C. home city

Molson Coors tanks finish river journey and move to overland trip in Chilliwack

VIDEO: Pipeline supporters rally across B.C.

Five simultaneous events organized by month-old Suits and Boots lobby group

VIDEO: B.C. woman praises burn fund after boat explosion in 1978

White Rock woman was 16 years old when she was left with second- and third-degree burns

B.C.’s Ryan Craig, Vegas Golden Knights chase history

Local product behind bench for expansion team’s incredible championship run

CP rail workers give strike notice

Employees could walk out as early as Tuesday at 7 p.m. PT

RCMP investigating after gunshots fired in Courtenay

Comox Valley RCMP officers are investigating after gunshots rang out in Courtenay… Continue reading

Suspected scammer attempts to use Black Press newspaper to dupe woman

Canadian Anti-Fraud Centre offers tips after Langley resident received suspicious call

Most Read