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Re: Reducing hexavalent chromium to trivalent chromium



I would like to know the exact source of the chrome in the process.

Vaughn Cassidy
West TN Environmental Coordinator
Office of Environmental Assistance
Tn. Dept. of Environment and Conservation
Office: (731) 512-1343
Cell: (731) 267-8963
Fax: (731) 661-6283
www.tdec.net
  
>>> "Terry Foecke" <tfoecke@matprod.com> 06/05/08 12:00 PM >>>
David,

Is the slag from the glass melting process?  That process can be a source of air emissions of hexavalent chromium.  Knowing that would help think about options, although chrome reduction when the chrome is fixed in slag sounds like a non-starter.

Terry Foecke
  ----- Original Message ----- 
  From: David Carter 
  To: p2tech@great-lakes.net 
  Cc: Catharine Brennan 
  Sent: Thursday, June 05, 2008 10:26 AM
  Subject: Reducing hexavalent chromium to trivalent chromium


  Good morning!

  I have a client who makes fiberglass insulation and during their manufacturing process, they produce a slag contaminated with hexavalent chromium.  We're trying to find a way to reduce the chromium back down to trivalent.  Does anyone on the list have information on production applications and working conditions?  Feel free to reply directly if you wish.

  Thanks!

  David A. Carter
  Pollution Prevention Specialist
  Pollution Prevention Institute
  Kansas State University
  133 Ward Hall
  Manhattan, KS  66506-2508
  785-532-4998 (office)
  785-341-2804 (cell)
  785-532-6952 (fax)
  www.sbeap.org 
  Attend any or all of four air-quality focused "Lunch and Learns" during summer 2008 in person at Olathe, Kansas or via your computer.  Topics will be What Businesses Need to Know (Jun. 11), Lawn Care for Clean Air (Jul. 9), Idling Reduction (Aug. 13), and Energy Efficiency for Businesses (Sep. 10).  Learn more and register at http://www.sbeap.org/workshops.php?workshop=9. 



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