Carbon Dioxide Snow Cleaning

Sherman, Robert

doi:10.1080/02726350601146424

Cited by 71 publications

(36 citation statements)

References 5 publications

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“…Simultaneously, the heat of vaporization leads to the cooling of the surrounding air and is responsible for the formation of solid CO 2 . The expansion process is a constant enthalpy process, and the yield of solid CO 2 depends on the feed phase (gaseous or liquid) and its pressure and temperature [8].…”

Section: Removal Of Particulate and Adhered Impurities By Dry-ice Clementioning

confidence: 99%

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Physical Methods for Cleaning and Disinfection of Surfaces

et al. 2011

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Cleaning and disinfection are important operations in food processing because of the significant contributions to product hygiene and food safety. The transfer of residues from surfaces into a product and the contamination with adhering microorganisms must therefore be avoided with sufficient certainty. Traditional methods for the removal of adherents and inactivation of microorganisms are based on thermal, mechanical, or chemical principles and are known to be time-and energy-consuming. This has resulted in a search for alternative methods that show prospective potential for their use in food-processing plants. This review gives an overview on such methods, which are based on physical principles. In dry-ice cleaning, for example, carbon dioxide snow pellets are blasted onto a surface to remove adherents through a combined action of thermal and mechanical effects, followed by dissolution of these adherents. Ice-pigging is a procedure where an ice/ water mixture is forced through pipes, heat exchangers, or other equipment to carry off adhered substances. Another method for physical cleaning, mainly described in context with membrane filtration, is to use vibration in the ultrasonic frequency domain to reduce fouling and to stabilize permeate flux. Radiation from various sources (UV lamps, radionuclides, X-ray tubes) differs in its applicability and disinfection efficiency because of differences in energy and penetration depth. Cold plasma treatment is another promising technology that is currently under investigation for cleaning and disinfection of surfaces of inorganic and organic materials.

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Section: Removal Of Particulate and Adhered Impurities By Dry-ice Clementioning

confidence: 99%

“…The most important factor that determines the capacity of this removal is the ability of the contaminants to dissolve in liquid CO 2 . Hydrocarbons with functional groups that show a lower solubility are less easily removed as compared to compounds that dissolve more excellently [8,9,15,16].…”

Section: Removal Of Particulate and Adhered Impurities By Dry-ice Clementioning

confidence: 99%

Physical Methods for Cleaning and Disinfection of Surfaces

et al. 2011

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“…It is particularly sensitive to water (Y. Shashoua, National Museum of Denmark, personal communication). I chose instead to try ablating the white surface haze with carbon dioxide (CO 2 ) snow (Hill, 1994;Sherman et al, 1999;Cano, 2001;Sherman, 2007). In this technique a high-velocity stream of dry ice microcrystals is blown onto the sculpture and lifts away small loose particles (Figure 9).…”

Section: Model: Minimum Interventionmentioning

confidence: 99%

The Age of Plastic: Ingenuity and Responsibility, Proceeding of the 2012 MCI Symposium

2017

Smithsonian Contributions to Museum Conservation

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“…Electrical fields, laser irradiation, and ultrasound techniques are limited to relatively small areas for cleaning (Meyer, 2003). Micro-jets based on drag forces are not effective to remove micron-sized bacteria (Sherman, 2007). The CO 2 aerosol cleaning technique has none of these disadvantages.…”

Section: Introductionmentioning

confidence: 99%

“…In the CO 2 aerosol cleaning technique, supersonic expansion is used to generate tiny CO 2 particles and project them toward contaminated surfaces at high velocity (Sherman, 2007). A high-pressure CO 2 gas expands as it passes through a small nozzle.…”

Section: Introductionmentioning

confidence: 99%