Record Display for the EPA National Library Catalog


Main Title Machine Coolant Waste Reduction by Optimizing Coolant Life.
Author Pallansch, J. ;
CORP Author Minnesota Univ.-Duluth. ;Minnesota Waste Management Board, St. Paul. ;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher Jul 89
Year Published 1989
Report Number EPA/600/2-90/033;
Stock Number PB90-257783
Additional Subjects Machine tools ; Coolants ; Machine shops ; Service life ; Minnesota ; Anaerobic processes ; Bacteria ; Maintenance ; Performance evaluation ; Centrifuging ; Skimmers ; Sampling ; Source reductions ; Waste management ; Waste utilization
Library Call Number Additional Info Location Last
NTIS  PB90-257783 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 56p
Machine shops use coolants to improve the life and function of machine tools. These coolants become contaminated with oils with use, and this contamination can lead to growth of anaerobic bacteria and shortened coolant life. The project investigated methods to extend coolant life through improved coolant maintenance, with the goal of reduced volumes of coolant waste. Skimmers to remove oil from the surface of coolants were found to be cost-effective. Use of a centrifuge was also tested. Coolant change practices were documented, and modified for improved coolant life. A specific coolant with wide applicability and tolerance was tested and found to have a life of at least seven months using the documented procedures. The work was performed between October 1, 1986, and April 30, 1988, through the Minnesota Technical Assistance Program and the Minnesota Waste Management Board.