Tag: carbon

Zoo Poo for Energy

The Toronto Zoo is looking into using all that dung that they have and turning into electricity to help make the zoo carbon neutral.

Zoo board members heard that a digester big enough to produce 4 megawatts could power the zoo plus 15,000 homes in Scarborough.

The technology isn’t new. It’s used extensively in Germany, for instance. Staff told the board the process doesn’t involve incineration, and there’s no combustion.

It could be running soon and would reduce the zoo’s carbon footprint by 40 per cent, staff said.

The zoo keeps a large pile of animal waste on site, some of which is used as fertilizer. One by-product of a biogas facility could be a higher-grade fertilizer, which De Baeremaeker suggested could be sold.

Microwave CO2

Something that I’ve never thought about is happening in New Zealand and that’s using microwaves to store carbon in charcoal.

“The application of microwaves to charcoal making is new,” says Tim Flannery of Macquarie University in Sydney, Australia, an expert on climate change and not associated with Carbonscape. “If it increases efficiency in the charcoal-making process it could prove to be a real winner.”

The plant is months away from running at full capacity, and is currently being used to produce charcoal that can be used to fertilise soil and for academic research.

The use of charcoal as a fertiliser, or “biochar”, is well known. Nearly 500 years ago, tribes in the Amazon used to smoulder their domestic waste, and the resultant charcoal was mixed into the soil. In places in the Amazon, this terra preta, or black earth, is nearly half a metre thick.

Charcoal makes the soil more fertile by binding nutrients to itself and making them available for plants, and is extremely resistant to breakdown. “You do quite often get a very significant boost in soil fertility and water holding capacity,” says Michael Bird at the University of St Andrews, UK.

“The unknowns that remain are exactly how long [the charcoal] stays in the soil. In some circumstances it can be millions of years, or decades, depending on how it is made, and soil conditions.”

Canadian Scientist Create CO2 Scrubber

A researcher from the University of Calgary has create a machine that essentially scrubs carbon dioxide from the atmosphere. The Tech Herald explains:

The team now believes it is close to achieving that goal with the development of a relatively simple machine that can capture, or “scrub” the trace amount of CO2 present in the air at any place on the planet.
“The climate problem is too big to solve easily with the tools we have,” explained Keith, director of the Institute for Sustainable Energy, Environment and Economy’s (ISEEE) Energy and Environmental Systems Group and a professor of chemical and petroleum engineering.
“While it’s important to get started doing things we know how to do, like wind power nuclear power and ‘regular’ carbon capture and storage, it’s also vital to start thinking about radical new ideas and approaches to solving this problem.”

Save the Planet: Plant More Trees

Simple stuff really: forests are good for the environment and we ought to have more of them.

The researchers’ calculations suggest that carbon storage in Midwestern forests could offset the greenhouse gas emissions of almost two-thirds of nearby populations, and that proper management of forests could sustain or increase their storage capacity for future generations.

Based on measurements taken between 1999 and 2005 at a forest study site in northern Michigan, the scientists have determined that similar upper Midwest forests covering an estimated 40,000 square miles store an average of 1,300 pounds of carbon per acre per year.

Factoring in effects of climate, history and tree type, the researchers developed an equation suggesting that a heavily forested region in northern Michigan could store more than 350,000 tons of carbon per year. With the area population emitting about 573,000 tons of carbon annually, the forests would sequester approximately 62 percent of the region’s human-caused carbon emissions – the equivalent of yearly emissions from about 225,000 cars.

New Company Tracks Carbon Footprints for You

OpenTrace is a brand new company that is looking for funding so they can create a website to help you figure out the carbon footprint of certain goods. The math behind the footprints will be open to anyone and the information can be used for anything.

In the video below they demo the website, just skip to about a minute in as the video starts with them setting up their equipment and gossiping about people at the conference.