Posts Tagged ‘Pollution’

Biodiesel can result in no GHG emissions

Posted Wednesday, June 3rd, 2009 by admin

img_0263crop2By: Jordana Levine

Biodiesel can produce 100 percent fewer greenhouse gas emissions than petroleum diesel, depending on the components used to create it.[1]  The non-toxic diesel is a new way to decrease emissions from vehicles, without having to eliminate the concept of putting fuel in a car.

Biodiesel is an alternative fuel that is usually made from vegetable oil, reused cooking oil, animal fat.  It is most often created through a process called transesterification, meaning the oil is combined with alcohol and a catalyst.  This results in the production of biodiesel.[2]  The biodisel can be used in any diesel engine and blended with regular diesel in any intensity. While pure biodiesel can emit 60 to 100 percent fewer greenhouse gases than petroleum, a 20 percent blend, called B-20, which is more commonly used, still produces 12 to 18 percent fewer emissions. In fact, even a two percent blend (B-2) has a small impact.[3]

Biodiesel is kinder to the environment than regular petroleum diesel.  Not only is it a biodegradable fuel, it reduces greenhouse gas emissions, as well as particulate matter from tailpipes, hydrocarbon and carbon monoxide in many engines. Although lower concentrations of biodiesel are often used, pure biodiesel can eliminate 67 percent of unburned hydrocarbons and 48 percent of carbon monoxide compared to petroleum diesel.  The numbers change when using different concentrations of biodiesel, but they are still significant.[4]

It also helps fight against global warming because it has a closed carbon cycle, meaning that the CO2 released when biodiesel is burned is absorbed fully by plants that are growing.  The plants are then processed and used to create clean fuel again.  With fossil fuels, it does not work the same way and the CO2 is left to linger in the air.  Unfortunately, it still takes some fossil fuel use to create biodiesel, so the carbon footprint is not completely eliminated.[5]  Also, the crops that are grown to create biodiesel release emissions and take up land.

biobus-cote

Montreal Biobus

Although it is not yet widely available, biodiesel has been tested and mandates have been proposed for increased use of the diesel. In Canada, biodiesel has been tested on buses in Montreal, Saskatoon, Halifax and Toronto: Toronto Hydro fleet vehicles are using B-5 (five percent concentrations) and B-20;[6] Saskatoon Transit Services is comparing two buses with B-5 with two non-biodiesel buses; downtown Montreal has 155 buses fueled with B-5 and B-20 to examine how biodiesel reacts in cold weather, and also to look at economic and environmental effects of biodiesel.[7]

The Canadian government also helped fund the construction of a demonstration plant in Oakville, Ontario that could produce one million litres of biodiesel.[8]  Other plants have been created as well.  Rothsay Biodiesel is one example of a company that has built biodiesel plants.  The company, which is a division of Maple Leaf Foods, recycles 6.7 million kilograms of food by-products from meat processing plants daily.[9]

rothsayplant_l

Rothsay Bodiesel Plant in Montreal

The US is also jumping into biodiesel.  In early May of 2009, President Barack Obama instructed the US Department of Agriculture (USDA), Department of Energy and Environmental Protection Agency (EPA) to form a group supporting the development of biodiesel.  The EPA has already started the implementation of the 2007 Energy Independence and Security Act (EISA), which says there should be 36 billion gallons of renewable fuel by 2022 – enough to cut petroleum consumption by 11 percent.  Some states, such as Illinois and Iowa and Minnesota have passed biodiesel mandates.[10]

1  Natural Resources Canada, Office of Energy Efficiency (OEE).  http://oee.nrcan.gc.ca/transportation/fuels/biodiesel/biodiesel-benefits.cfm?attr=16
2  Canadian Renewable Fuels Association (CRFA). http://www.greenfuels.org/biofaq.php?id=db0fb154-4132-102b-b3dc-0030488d2a96
3  OEE.  http://oee.nrcan.gc.ca/transportation/fuels/biodiesel/biodiesel-benefits.cfm?attr=16
4  CRFA.  http://www.greenfuels.org/biofaq.php?id=c1fa7953-4285-102b-b3dc-0030488d2a96
5  CRFA. http://www.greenfuels.org/biofaq.php?id=f1397af8-4285-102b-b3dc-0030488d2a96
6  OEE. http://oee.nrcan.gc.ca/transportation/fuels/biodiesel/biodiesel-availability.cfm?attr=16
7  OEE. http://oee.nrcan.gc.ca/transportation/fuels/biodiesel/biodiesel-research.cfm?attr=16
8  Ibid.
9  Rothsay Biodiesel.  http://www.rothsaybiodiesel.com/about/
10  Delta Farm Press. http://deltafarmpress.com/biofuels/biodiesel-epa-calculations-0520/

“Locavores” shorten the gap between farmer and plate

Posted Tuesday, May 26th, 2009 by admin

Jordana LevineBy: Jordana Levine

In North America, food travels an average of 1,500 to 3,000 miles before it reaches your plate.[1]  This means high levels of greenhouse gases are emitted from the vehicles that get it there.

“Locavores” are some of the latest environmentalists, eating only foods that are produced within a 100-mile radius.  Although these people may feel that they are eating locally for the environment, the truth is that their best contribution is to their own communities.  Locally grown food is great for the local economy, providing distinction for small businesses and promoting unity within the community.

“On the other hand,” says Mike Schreiner, co-founder of Local Food Plus (LFP), a national organization in Canada that certifies farmers and food processors committed to sustainable food, and links them to local buyers, “There’s a whole host of other environmental ramifications from production.”

Animal waste from an industrial farm is disposed of

Animal waste from an industrial farm

“One issue,” Schreiner says, “Is just the scale of production.”  He mentions that large-scale farms limit biodiversity and use more fertilizers, heavier equipment, and lead to more greenhouse gas emissions than on smaller farms.  He adds, “There are some studies out there suggesting that methane gas emissions from cattle [contribute] more to greenhouse gases than any other part of a food system.”

“Those are issues… that are of equal concern to the transporting of food and/or of greater concern,” says Schreiner.

Eating locally grown food will not be the ultimate solution for eating to support the environment.  Although “locavores” make choices that involve less transportation, and therefore less greenhouse gas emissions, in reality, delivering food to the consumer only contributes to 4 percent, on average, of emissions in a household’s food-related carbon footprint.  Actually, 83 percent of the footprint comes from the food’s origins, which include raising cows and manufacturing dairy products.[2]

Even if locally grown foods produce less greenhouse gases than those that have to be shipped, it may still create more emissions to grow plants in local heated greenhouses rather than to ship them from warmer climates.  A study by Lincoln University in New Zealand found that, if the use of fuel, electricity, pesticides, animal feed, transportation, storage, and others were factored in, a ton of New Zealand apples emitted the equivalent of 407lbs of carbon dioxide compared to nearly 600lbs in the U.K.; this means that it is still significantly less harmful for the U.K. to import the apples than grow them locally.[3]   More important than eating locally is to know what you’re eating and how the food has been grown and manufactured.

LFP’s goal is “to narrow the distance between farmer and shopper,” says Schreiner.  He says it provides people, especially those in developed countries who eat highly processed, unhealthy foods that lead to obesity, with healthier, fresher products.  Also, “Local foods help stabilize markets.”

The perks of eating local food are not to be ignored.  There is a lot to be said for knowing where your food comes from.  Community Supported Agriculture (CSA) has become a popular way for people to buy local, seasonal food right from the farmer.  This enables the farmer to receive money before the crops are ready and lets consumers interact with the farmer, visit the farm, learn about how their food is being grown and find out exactly what’s in it.  Tens of thousands of Americans have joined CSAs and, although the government does not keep track of how many there are, approximately 2500 have signed up with LocalHarvest, which has the most extensive list of American CSAs.[4]

THe Fifth Town Artisan Cheese team

The Fifth Town Artisan Cheese team

Ideally, foods would be grown locally, but also sustainably, to support the community and keep the environment healthy.  A good example of a farm that does both of these things is Fifth Town Artisan Cheese Company, which is LFP-certified and recently won the Premier’s Award of $100,000 at the Premier’s Agri-Food Innovation Awards in Ontario.  It won the award for their use of solar, wind and geothermal energy, green cleaning agents, biodegradable packaging and environmentally friendly waste treatment.[5]

1  MacKinnon, J.B. and Aliza Smith.  The 100-Mile Diet.  Toronto: Vintage Canada, 2007.
2  Liaw, Jane.  “Food miles are less important to environment than food choices, study concludes.”  2 Jun 2008. http://news.mongabay.com/2008/0602-ucsc_liaw_food_miles.html
3  Woods, Richard.  “Why long-haul foods may be greener than local food with low air-miles.”  3 Feb 2008. http://www.timesonline.co.uk/tol/news/environment/article3294448.ece
4  LocalHarvest. “Community Supported Agriculture.” http://www.localharvest.org/csa/
5  Local Food Plus.  “LFP Certified Farmer Wins Premier’s Innovation Award.”  http://www.localfoodplus.ca/Fifth_Town.htm

Greenhouse gases a ‘health threat’, declares EPA

Posted Wednesday, May 20th, 2009 by admin

By: Jordana Levine

Climate change poses a threat to society – the U.S. government made its first admission ever concerning this issue. On April 17, the Environmental Protection Agency (EPA) said that greenhouse gases are a danger to the public’s health and well-being, both now and for future generations.

The EPA recognized the dangers of carbon dioxide, methane, hydrofluorocarbons, and three other greenhouse gases, which lead to climate change. Climate change has been found to lead to a higher concentration of ozone at ground level, which is harmful to our health.  Although ozone is a useful greenhouse gas that protects humans from UV rays when it is found in the Earth’s stratosphere,[1]  it can have a damaging, and even fatal impact on human and animal respiratory systems when it is at ground level.[2]

Climate change can lead to increased drought, flooding, wildfires, intense storms, and damage water resources, agriculture, and all kinds of animals and the ecosystems they live in. These issues, among others, can have a significant impact on the health of various groups of people, including the poor, those in poor health, infants, the elderly, and indigenous groups.[3]

This new direction will support Obama administration’s efforts to focus on green jobs, clean energy, and new technologies, notes EPA’s Administrator Lisa Jackson – and says that these findings have encouraged the agency to search for the best ways to combat climate change’s negative impacts.[4]

The recent findings on the dangers of climate change have entered a public comment period, which lasts for 60 days. Still, both President Barack Obama and Jackson have made it clear that they support a legislation to tackle the issue and eventually lead to an economy based on clean, emission-free energy.[5]

Although Canada may not be actively combating climate change and its potential to affect society at the present time, Health Canada did write a report in 2000 acknowledging its dangers.  Health Canada noted both the short- and long-term effects of greenhouse gases on human health, and noted improving air quality would lead to noticeable improvements in health.

Health Canada also mentioned that, assuming the country could decrease emissions by 50 percent, the health improvements would be 40 times as effective if the U.S. became a participant in attempts to lower greenhouse gases.[6]   With the U.S. poised and willing to become a clean energy economy, Canada could join forces and contribute to a vast improvement in air quality and the health of the population as a whole.

1  WHO/Europe.  “Stratospheric ozone depletion.”  26 Mar 2007. http://www.euro.who.int/globalchange/Topics/20020627_1
2  WHO/Europe.  “7th meeting: modelling and assessment of health impacts of particulate matter and ozone from LRTAP.”  20 Dec 2005. http://www.euro.who.int/air/activities/20050418_6
3  Climate and Capitalism. “EPA: Greenhouse Gases Threaten Health.” 18 Apr 2009. http://climateandcapitalism.com/?p=664
4  EPA. “Administrator Jackson’s Message about the Greenhouse Gas Endangerment Finding.” 8 May 2009. http://www.epa.gov/administrator/greenhouse.htm
5  Climate and Capitalism. “EPA: Greenhouse Gases”
6  Health Canada. “Climate Change and Health Economic Advisory Panel - Final Report on Health Impacts of the Greenhouse Gases (Ghg) Mitigation Measures - January 2000.”  3 Aug 2005. http://www.hc-sc.gc.ca/ewh-semt/pubs/climat/greenhouse_gases-gaz_effet/outcomes-resultats-eng.php

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