No-Touch Automated Disinfection System Based on Hydrogen Peroxide and Ethyl Alcohol Aerosols for Use in Healthcare Environments

Abstract

Healthcare-related infections are sustained by various bacteria and fungi. In recent years, various technologies have emerged for the sanitation of healthcare-related environments. This study evaluated the effectiveness of a no-touch disinfection system that aerosolizes 5% hydrogen peroxide and 10% ethyl alcohol. After selecting an environment, the Total Bacterial Count and the Total Fungal Count in the air and on a surface of the room were determined to evaluate the effectiveness of the aerosolization system. In addition, sterile stainless-steel plates inoculated with S. aureus, P. aeruginosa, and Aspergillus spp. isolated from hospitalized patients and reference strains were used to evaluate the effectiveness of the system. For each organism, three plates were used: A (cleaned), B (not cleaned), and C (control). The A plates were treated with non-ionic surfactant and the aerosolization system, the B plates were subjected to the aerosolization system, and the plates C were positioned outside the room that was sanitized. Following sanitization, air and surface sampling was conducted, after which, swabs were processed for bacterial and fungal enumeration. The results showed that the air sanitization system had good efficacy for both bacteria and fungi in the air and on stainless-steel plates, particularly for the A plates.

Electrostatic Spray Disinfection Using Nano-Engineered Solution on Frequently Touched Surfaces in Indoor and Outdoor Environments

“…There are several limitations to the use of chemical-based disinfectants, such as harmfulness, its corrosive nature and bacterial resistance [ 46 ]. Advanced disinfection technologies, such as self disinfecting materials [ 85 ], anti-viral coatings [ 57 ], automated procedures [ 57 , 86 ], nanoparticle-based disinfectants [ 46 ] and electrostatic spraying methods [ 26 , 87 ], are becoming famous strategies due to their long-lasting and high-precision disinfection. Although such studies highlight new technologies that can enhance the effectiveness of existing methods, they lack comprehensive data that can help in a practical directive solution to the rapidly growing need for disinfection of highly touched fomites.…”

Mathematical Model of Propagation of an Aerosol Created by an Impulse Method in Space

“…Aerosols are created by nebulizers, including ultrasonic ones [ 6 ]. Conventional automated spray devices, called no-touch automated disinfection systems, are used to decontaminate large rooms [ 7 ].…”

Assessment of the Effect of Aerosol Disinfection of Nanosilver and Hydroperoxide Ag+ at Can Tho University of Medicine and Pharmacy

“…Another advantage of nanosilver is that it is a broad-spectrum antibacterial agent that is non-toxic to humans and animals at 100 ppm or less [6]. Hydrogen peroxide Ag + (H2O2), a solution composed of two hydrogen atoms, two oxygen atoms, and Ag + , is usually used at the Can Tho University of Medicine and Pharmacy because it eliminates bacteria for a long time [7]. However, studies on the sterilizing quality of nanosilver in the air of Vietnam hospitals are very limited.…”