Supercritical Carbon Dioxide Cleaning: Relevance to Particle Removal

Kohli, Rajiv

doi:10.1002/9781118831571.ch13

Cited by 2 publications

(1 citation statement)

References 93 publications

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“…The cost of SC-CO 2 equipment used in this study is around 120,000$ (1 L volume) in comparison with 500$ for autoclave (20 L volume), and the large capacity (30 L) might reach to several thousand depending on the complexity of the controls and others components as well as degree of the automation required [78]. However, the operating and disposal cost are usually low.…”

Section: Morphology Of Fungal Sporesmentioning

confidence: 95%

Inactivation of Aspergillus Spores in Clinical Wastes by Supercritical Carbon Dioxide

Efaq

Rahman²,

Nagao³

et al. 2016

Arab J Sci Eng

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The present work investigated the inactivation of Aspergillus spp. spores by supercritical carbon dioxide (SC-CO 2 ) based on the destruction of enzyme activity and the alteration of spore morphology as documented using a scanning electron microscope (SEM). Six Aspergillus spp. included A. niger, Aspergillus sp. in section Nigri, A. fumigatus, A. tubingensis, A. hortai and Aspergillus sp. strain no 145 were isolated from clinical waste samples and inactivated by using SC-CO 2 at optimal conditions (35 MPa, 75 • C and 90 min). The inactivation of spores was determined by the culturing method. Aspergillus sp. strain no 145 and Aspergillus hortai were further analysed to quantify enzyme activity, and the morphology of spores was determined by SEM to demonstrate the inactivation mechanism. The results revealed that growth and enzyme activity of the SC-CO 2 treated fungal spores were not detected. The SEM observation demonstrated complete destruction of spore morphology and exsorption of protoplasmic contents. The findings proved the high efficiency of SC-CO 2 for the destruction of fungal contaminants in clinical wastes. B A. N. Efaq

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Section: Morphology Of Fungal Sporesmentioning

confidence: 95%