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TDI (Diesel) Emissions This is a discussion about emissions from TDI's. Pro's cons of Diesels (including biodiesel) effects on the environment and how they compare to Gasoline and other fuel sources for Internal combustion engines.

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Old December 31st, 2010, 06:17   #1
Blonde Guy
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Default Diesel and Black Carbon

http://pubs.acs.org/cen/science/88/8851scic7.html

A study of the pollutant black carbon shows that stricter pollutant emission regulations in California over the past 20 years have led to a 50% reduction in concentrations of the substance. The reduction correlates directly with a reduction in emissions from burning diesel fuel, V. Ramanathan, a climate and atmospheric science professor at Scripps Institution of Oceanography, said at the American Geophysical Union meeting in San Francisco on Dec. 14. The study is being published in the journal Atmospheric Environment and was funded by the California Air Resources Board. Black carbon, a sooty particulate material produced from burning heavy hydrocarbons and solid biofuels, has recently been recognized as a major pollutant and global-warming agent in its own right, alongside nitrogen oxides, sulfur, and CO2. For example, scientists have found that black carbon deposited on snowpacks can cause increased warming and melting in areas such as the Sierra Mountains. Ramanathan said he was surprised and delighted that the California regulations resulted in such a strong and swift reduction in the levels of black carbon. “It’s what a [climate change] mitigation person’s dream would be,” he said at the meeting.
Chemical & Engineering NewsISSN 0009-2347Copyright © 2010 American Chemical Society
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Old December 31st, 2010, 06:22   #2
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So, you're happy you have a DPF?

"has recently been recognized" - Where?
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Old January 1st, 2011, 10:30   #3
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Nice paragraph, but where is the rest of the info? I clicked the link and it was the same paragraph. A summarized paragraph doesn't hold a whole lot of weight.
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Old January 1st, 2011, 16:05   #4
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My BS meter is going off...........big time.
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Old January 4th, 2011, 22:05   #5
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This is a link to the article hosted by Science Direct.

http://www.sciencedirect.com/science...2&searchtype=a
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Old January 4th, 2011, 22:17   #6
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Quote:
Originally Posted by Blonde Guy View Post
http://pubs.acs.org/cen/science/88/8851scic7.html

A study of the pollutant black carbon shows that stricter pollutant emission regulations in California over the past 20 years have led to a 50% reduction in concentrations of the substance. The reduction correlates directly with a reduction in emissions from burning diesel fuel, V. Ramanathan, a climate and atmospheric science professor at Scripps Institution of Oceanography, said at the American Geophysical Union meeting in San Francisco on Dec. 14. The study is being published in the journal Atmospheric Environment and was funded by the California Air Resources Board. Black carbon, a sooty particulate material produced from burning heavy hydrocarbons and solid biofuels, has recently been recognized as a major pollutant and global-warming agent in its own right, alongside nitrogen oxides, sulfur, and CO2. For example, scientists have found that black carbon deposited on snowpacks can cause increased warming and melting in areas such as the Sierra Mountains. Ramanathan said he was surprised and delighted that the California regulations resulted in such a strong and swift reduction in the levels of black carbon. “It’s what a [climate change] mitigation person’s dream would be,” he said at the meeting.
Chemical & Engineering NewsISSN 0009-2347Copyright © 2010 American Chemical Society
Really, recognized? major pollutant? Has EPA done this? Where are the health studies?

I think California In N Out burgers are major health risks? What is the state doing about that?
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Old January 5th, 2011, 20:58   #7
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While I am by no means validating the two brief and EXTREMELY abstract paragraphs that have been provided to us previously. I did find this from a more reliable source.

http://www.pewclimate.org/global-war...rbon-factsheet

I would suggest for future reference when posting articles of an "anti-diesel" nature on a clearly diesel friendly website, post more than a paragraph and then afterwards explain what you're trying to get at.

For instance:

We all know that burning fossil fuels isn't the greatest thing for the environment, thats why most of us here choose to drive the most efficient vehicles we can get our hands on(hint: TDIs). As for me, I'm sticking with diesel until the automakers can give me something as efficient and enjoyable to drive as my TDI.
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Old January 6th, 2011, 08:59   #8
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As an air quality forecaster, I have real-time access to PM monitoring data over the entire CONUS. These monitors have the capability of speciating the PM, e.g. EC (i.e., black carbon), OC, sulfate, nitrate, etc.

I have NEVER seen EC (black carbon) make up more that 10% - 15% of the total PM2.5 mass at ANY monitoring site.

I have no fundamental problem with "cleaning up" diesel emissions. However, there are a myriad of other sources of PM2.5, including BC. When are the regulators going to wake up and start addressing the other sources of PM2.5 in general or BC in particular?


"Soot is produced by spark-ignition vehicles…and lots of other sources! (from the tailpipe of relatively new Toyota Prius at NREL)"



http://www.nrel.gov/vehiclesandfuels...obj_lawson.pdf (slide #7)
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Old January 6th, 2011, 09:09   #9
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Why not make a list of "soot" emitting sources? I'll start...assuming all fired by hydrocarbons.....

Your home furnace,
Any commercial/business enterprise that has a heating furnace,
Refineries, chemical plants,
McDonald's, Burger King, White Tower,
Government buildings,
School buildings,
people who burn trash outdoors,
Autos,
Trucks,
Trains,
Buses,
Airplanes,
Motorcycles,
Lawn mowers,
chainsaws,
Marine vessels, boats,
etc,

and the list goes on..........
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Old January 6th, 2011, 20:52   #10
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I am pretty sure science can back up that CO2, CO, NO and many other byproducts of combustion make up a larger overall percentage of global, climate change emissions than "black carbon," and overall these "invisible" pollutants have tons greater impact on climate change than does black carbon, which also comes from burning wood in a fireplace.
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