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Title
Extending Sulfuric Acid Anodizing Bath Life (2007, May) [TN07-089]
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- Extending Sulfuric Acid Anodizing Bath Life (20070522183610_tn07-089.pdf)
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The OCLC Open WorldCat number for the electronic document record is '191675809'.
Description
The Waste Management and Research Center (WMRC) worked with All-Brite Anodizing, a small job shop anodizer located in Northlake, IL to achieve two goals. The first was to test the effectiveness of acid bath extender. The second was to determine if sulfuric acid used in the anodizing process could be cleansed sufficiently to continue using it without decanting portions to the wastewater pre-treatment system.
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.Extending Sulfuric Acid Anodizing Bath Life WMRC Fact Sheet TN07-089May 2007 Background It has often been theorized that by keeping an acid bath clean, the acid can be re-used continuously without dumping the bath. However, the bath would need to be spiked with fresh acid to maintain its effectiveness. Numerous facilities have tried to extend the life of their acid baths using filtration but have been unsuccessful. U.S. companies treated over million pounds of spent acid off-site in 2004. They treated another 1.9 billion pounds on-site.1 If it were possible to economically use acid over and over, companies would not need to treat thousand of tons of spent acid and would save millions of dollars in transportation and disposal costs, as well as help protect the environment. study by Ellis, Deluhery and Rajagopalan demonstrated that spent acid etch rates can be improved by using sodium silicate filtration, ultrafiltration or carbon filtration.2 During the same research project, they als
Issuing Agency
Illinois
Waste Management and Research Center
Program: Illinois Waste Management and Research Center Pollution Prevention Program
Contact
Organization: Illinois Waste Management and Research Center
One East Hazelwood Dr.
Champaign, IL 61820
Network Address: library@wmrc.uiuc.edu
Phone: 217-333-8957
Fax: 217-333-8944
Document Descriptive Information
File Data
- MIME Type: application/pdf
- Language(s): EN-English
- Creation Date (from issuing agency): 05 22 2007
- File Modification Date On Web Server: Tue, 22 May 2007 14:48:22 GMT
- Document Modification Date (from issuing agency): 05 22 2007
- Date Accepted Into Depository: Mon, 11 Jun 2007 15:56:58 GMT
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- Web Address On Date Of Deposition: http://www.wmrc.uiuc.edu/main_sections/info_services/library_docs/TN/tn07-089.pdf
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