What mining and smelting operations use catalysts? Kirk -----Original Message----- From: Greg and April [mailto:[EMAIL PROTECTED] Sent: Saturday, December 01, 2001 8:45 AM To: biofuel@yahoogroups.com Subject: Re: [biofuel] catalytic converter question
Do we know for sure, that these materials are from cat. conv. ? I guess what I'm asking is, with the increase use of these materials in everyday use, who is to say the cat. conv. are the source? Why not minning & smelting opreations, or for that matter many of these materials have been used to make dino. fuel for alot longer then for cat. conv. use. Greg H. ----- Original Message ----- From: "steve spence" <[EMAIL PROTECTED]> To: <biofuel@yahoogroups.com> Sent: Saturday, December 01, 2001 06:58 Subject: Re: [biofuel] catalytic converter question > Interesting..... > > Which is worse, platinum, palladium and rhodium, or hydrocarbons, carbon > monoxide > and nitrogen oxides? Biodiesel has greatly reduced levels of hydrocarbons, > carbon monoxide > and nitrogen oxides, so maybe we are chasing our own tails here? > > I'm going to rethink recommending cat converters on b100 vehicles. > > Steve Spence > Subscribe to the Renewable Energy Newsletter: > http://www.webconx.com/subscribe.htm > > Renewable Energy Pages - http://www.webconx.dns2go.com/ > Human powered devices, equipment, and transport - > http://24.190.106.81:8383/2000/humanpower.htm > [EMAIL PROTECTED] > ----- Original Message ----- > From: "Keith Addison" <[EMAIL PROTECTED]> > To: <biofuel@yahoogroups.com> > Sent: Saturday, December 01, 2001 5:48 AM > Subject: Re: [biofuel] catalytic converter question > > > > Hi Craig and all > > > > More on this, from the archives: > > > > http://www.planetark.org/dailynewsstory.cfm?newsid=9772 > > Planet Ark > > Catalytic convertors contribute to pollution-magazine > > > > UK: February 9, 2001 > > > > LONDON - Instead of helping to clean up the environment, catalytic > > converters used on car exhausts are adding to pollution, a science > > magazine said on Wednesday. > > > > Researchers have found metal from converters in remote areas of > > Greenland proving, they say, that it is a global problem. > > > > "It's not just close to the cities and highways," Carlo Barbante, a > > chemist at the University of Venice, Italy, told New Scientist > > magazine. > > > > Catalytic converters convert pollutant gases into less noxious > > products. The platinum, palladium and rhodium in the coverters fitted > > to cars catalyse reactions that convert hydrocarbons, carbon monoxide > > and nitrogen oxides. > > > > Barbante and his team measured concentrations of the metals in ice > > and snow cores from Greenland dating from 1969 to 1988 and from > > 1991-1995. > > > > After comparing the cores to samples dating back 7,500 years, they > > found that concentrations of the metals had been increasing since > > 1976. > > > > "Rhodium levels are already 120 times higher than in the > > 7,500-year-old ice. Palladium and platinum levels have increased 80 > > and 40-fold respectively," according to the magazine. > > > > Barbante said the ratios they uncovered were similar to car exhausts > > found in another study, which suggests the metals originated from > > catalytic converters. > > > > REUTERS NEWS SERVICE > > > > > > Biofuel at Journey to Forever: > > http://journeytoforever.org/biofuel.html > > Please do NOT send "unsubscribe" messages to the list address. > > To unsubscribe, send an email to: > > [EMAIL PROTECTED] > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > > > > > > > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > Please do NOT send "unsubscribe" messages to the list address. > To unsubscribe, send an email to: > [EMAIL PROTECTED] > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.292 / Virus Database: 157 - Release Date: 10/26/2001 ------------------------ Yahoo! Groups Sponsor ---------------------~--> See What You've Been Missing! Amazing Wireless Video Camera. Click here http://us.click.yahoo.com/75YKVC/7.PDAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
