The Lignite Coal-Based Carbon Advantage
FOR IMMEDIATE RELEASE |
Contact
NORIT Americas Inc.
800-641-9245
|
December 9, 2004 - The Cost Savings Advantage
Lignite coal-based activated carbon has 20% more total pore volume that bituminous coal-based activated carbons. The higher pore volume of lignite based carbon translates into a lower bulk density. For a fixed volume, less lignite based granular activated carbon (GAC) has to be purchased, which is an immediate 20% savings. In some instances the carbon bed is backwashed before it is put into service. Because of its unique physical properties, lignite based GAC requires substantially less water for backwashing than does bituminous based GAC. Compare the Bed Expansion Curves found on our datasheets to those of the competition for a similar mesh size and you will immediately see that lignite based GAC's could significantly reduce your usage of backwash water.
The Performance Advantage
The lignite based carbon adsorptive advantage is evident in several industries, two of which are the petrochemical industry and the potable water industry. Lignite based activated carbon is macroporous. It has 20% more total pore volume than bituminous based coal carbon. This larger mean pore radius allows for more of the internal pore sturcture to be accessible to larger size impurities. In the petrochemical industry lignite based carbon has a greater capacity to remove the larger molecules that make up emulsions of oil and grease. For more information, please refer to our brochure, "Five Ways Why PETRODARCO Activated Carbon is Better for Purifying your Amine & Glycol Gas Treating Solution."
Approximately 90% of the potable water produced in the U.S. originates from surface water sources. Because lignite based activated carbon has a more open pore structure than bituminous based carbon, it will usually perform better at removing taste and odor in water streams containing these large molecular compounds. Please see the case studies for Lowell, MA, as well as Edmond, OK and Wilmington, NC. They are former users of bituminous based GAC and who have now converted to lignite based GAC because of its superior taste and odor reduction capabilities on their surface waters. Improved adsorptive performance means savings due to less frequent GAC change-outs.
We trust this information has been beneficial to you. However, if you need further assistance regarding these products and related services, please do not hesitate to contact us.
|
