Gaps in SCCO2
SCCO2 cleaning is still not an "off-the-shelf" technology that is well
defined and understood by a large portion of manufacturers. The following
are some areas in need of research:
Case studies from successful industry implementation of SCCO2 cleaning.
There is a lack of documentation on industry implementation of SCCO2
cleaning. While an earlier analysis of aqueous cleaning revealed a large
number of successful industry applications, it was difficult to identify
published material on SCCO2 cleaning that was more applied than laboratory
or pilot-scale testing. The lessons learned from true, long-term
implementation of a technology are always the most valuable to others
considering applying the technology themselves.
A better understanding of the ideal pressure and temperatures that can be
used for specific contaminants. Information in the currently available
literature indicates that for each contaminant-substrate combination of
interest, there may be an ideal range of pressures and temperatures at which
to operate a SCCO2 cleaning system to maximize cleaning efficiency while
minimizing operational costs. If feasible to complete, development of a
database of suggested pressure and temperature settings to use for various
typical contaminant-substrate combinations would be very useful to
manufacturers trying to implement SCCO2 cleaning.
Further investigation of SCCO2 cleaning for applications that have a
combination of contaminants. Many industry applications require
multiple contaminants to be removed simultaneously from a part. Results
from testing of these types of applications will be useful to manufacturers
that have applications with multiple contaminants.
Continue on to the summary page of the SCCO2 Cleaning Technology Review.
Return to the introduction of the SCCO2 Cleaning Technology Review
© 1999, Pacific Northwest Pollution Prevention Resource Center
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