CO2 Pellets Environment Concern is growing that CO2 is a green house warming gas. The snow cleaning process does not contribute new CO2 to the atmosphere. The CO2 gas used for cleaning is a byproduct of other industrial processes and it can be recycled. This process will not increase water use and will decrease water use if substituted for water intensive processes. The contaminant that has been removed must be collected and disposed of as appropriate. State Information | Glossary | Conversion Checklist | Comments Home | Process Advisor | Alternatives | Links | Search All SAGE material, Copyright© 1992, Research Triangle Institute Last Update: 18 March 1995 sage@rti.org http://clean.rti.org/alt.cfm?id=pe&cat=en