Category: Environment

“Nom nom nom” Says the Cement

Our good friend algae is at it again and is cleaning smokestacks!

A mixture of hot gas rises out of a flue stack at the St. Marys Cement plant about 50 kilometres west of Waterloo. But not all the CO2-rich exhaust is vented to the open air.

Some is redirected through a 15-centimetre thick pipe connected to the side of the stack. The pipe carries the gas into a high-tech facility where a species of algae from the neighbouring Thames River uses photosynthesis to absorb the carbon dioxide and release oxygen in return.

“It’s a small model of what a big full-scale facility could be,” says Martin Vroegh, environment manager with St. Marys Cement Inc., headquartered in Toronto. The algae project, which went live last fall, is believed to be the first in the world to demonstrate the capture of CO2 from a cement plant.

The idea, Vroegh explained, is to turn CO2 into a commodity rather than treat it as a liability. The CO2-consuming algae will be continually harvested, dried using waste heat from the plant, and then burned as a fuel inside the plant’s cement kilns. Alternatively, the green goop can be processed into biofuels for the company’s truck fleet.

Keep reading at The Star.

Thanks Mike!

C’est What? Vegetable Oil!

A restaurant in downtown Toronto has converted their deep fryer into a more efficient model and use the waste oil from the fryer to fuel a car. Neat!

Since installing the new deep fryer in late January, Broughton says his vegetable oil use has been cut in half and the amount of gas to run the fryer has been drastically reduced.

“The fryer is supposed to use 40 per cent less gas, but we’re still assessing exactly how much we’re saving. Just from the lower vegetable oil use, I’m saving $80 a week, about $4,000 a year. My waste used to be about 100, 110 litres a week. Now it’s about 50 litres a week. Angelo now takes pretty much all of our used oil for his car.”

Rigitano says the only problem he has had so far with the car is when he took it to be serviced.

“My mechanic started laughing. He said, ‘I’m getting hungry.’ ”

Fact: According to Natural Resources Canada, North Americans produce 5 to 6 kg per person of trap grease removed from commercial cooking operations each year and another 3 to 5 kg of cleaner used cooking oils. Converting this could produce almost 2.5 billion litres of clean diesel a year, worth about $2 billion.

Read the full article at The Star.

Thanks Kathryn!

Truly Green Beer This St. Patrick’s Day

Many breweries have stepped up their efforts to limit the negative environmental effects of brewing beer. Steam Whistle Pilsner has earned praise from many an environmentalist for their progressive steps toward becoming a green brewery.

The Toronto-based brewery gets its electricity from Bullfrog Power, which uses wind and low-impact hydroelectric sources. Its cooling is by Enwave, which uses cold water from deep in Lake Ontario, and new brewing equipment that captures steam cuts their wastewater by a third. Its trucks run on biofuels and, thanks to improved route planning, they cut the amount of fuel they used last year by more than 7,000 litres – while increasing sales.

Of course, Steam Whistle isn’t the only brewery improving their environmental standards: Brasserie McAuslan in Montreal and Molson Coors have both reduced their water use in recent years.

You can read the whole article at The Globe and Mail.

Google Adds Bike Directions to Google Maps

The League of American Bicyclists has announced that Google has added bicycling directions to their US maps! Unveiled at the National Bike Summit, the bike feature will have cycling directions (in addition to driving, walking, and in some cities, public transit) as an option to plan a route between point A and point B.

This new feature includes: step-by-step bicycling directions; bike trails outlined directly on the map; and a new “Bicycling” layer that indicates bike trails, bike lanes, and bike-friendly roads. The directions feature provides step-by-step, bike-specific routing suggestions – similar to the directions provided by our driving, walking, or public transit modes. Simply enter a start point and destination and select “Bicycling” from the drop-down menu. You will receive a route that is optimized for cycling, taking advantage of bike trails, bike lanes, and bike-friendly streets and avoiding hilly terrain whenever possible.

Google has said that the inclusion of cycling directions has been the most requested addition to Google maps. Here’s hoping that additional pressure from cities around the world will soon lead to cycling directions becoming available in your city!

Read more at the League of American Bicyclists blog.

EDIT (March 12)

It appears at least one Canadian city won’t have to wait long for something similar! Ride the City has gone live with Toronto bike directions! Ride the City Toronto is based on the open source maps system, OpenStreetMap.org and offers much the same functionality as the Google map version in the States. Check it out here and start planning your route by bike!

Powering Tomorrow With Ancient Plant Technology

Photosynthesis is how plants convert energy from the ball of fire in the sky into useful plant-growing energy. The USA’s Department of Energy is actually looking into how photosynthesis can be used to power our homes and even turn homes into miniature power stations using the power of nature.

According to Nocera, his new system can work at ambient temperatures and pressures, without corrosion in a simple glass of water, even polluted water. “If you need pure water for energy storage, they’ll drink it,” Nocera said. “Use puddle water instead.” In fact, Nocera has been running his prototype on untreated water from the Charles River in Boston. And it’s cheap, not $12,000 per kilowatt like commercial electrolyzers that do the same thing. “That’s not going to help the energy situation for the U.S. or poor people of the world.”

Using the electricity generated by a photovoltaic array five meters by six meters, Nocera claims he can split enough water in less than four hours “to store enough energy for the average American home” for a day, a little more than 30 kilowatt-hours. “We need to stop making big energy systems one a time to service lots of people. We need to do it the old American way of making one small one and then manufacturing that system to give it to the masses.”

Read more at Scientific American