The efficiency of an air filtration system in the hospital ward

McLarnon, Nichola; Edwards, G.F.S.; Burrow, J Gordon; Maclaren, William M.; Aidoo, Kofi E.; Hepher, M.J.

doi:10.1080/09603120600641516

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…The complex inpatient cancer center environment demands special consideration to ensure a healthy indoor air quality to protect patients against hospital-acquired infections [19,20]. Sources of air pollution within the hospital include chemicals and microbial air pollutants from various sources [21]. Properly designed systems and optimal operations are essential to control and mitigate potential sources of pollutants such as air filtration, differential pressure control, directional airflow control, and ultraviolet germicidal irradiation disinfection, among others [22].…”

Section: Environmentalmentioning

confidence: 99%

The Inpatient Unit in a Cancer Center

Kharfan‐Dabaja

2021

The Comprehensive Cancer Center

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Despite emergence of effective novel cancer therapies that can be administered outside the hospital setting for various solid tumor and hematologic malignancies, a significant number of patients still require treatment in the inpatient setting, owing to the nature of the treatment, duration, and frequency, or to the level of supportive care required to administer such treatments, among others. Apart from specialized trained physicians and nurses, the number of inpatient team services has expanded significantly to meet the complex needs of patients and their families. We acknowledge that there is no universal model for how an inpatient unit should be built and developed; it depends on financial resources, population density, and societal factors, among others. Here, we describe the main components of an inpatient unit in a cancer center. The ultimate goal must be to provide a safe environment for cancer patients and to facilitate delivery of care in an efficient manner.

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Section: Environmentalmentioning

confidence: 99%

The Inpatient Unit in a Cancer Center

Kharfan‐Dabaja

2021

The Comprehensive Cancer Center

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“…Increase of airborne biological particles concentration in buildings could be due to microbial release from contaminated moist materials like walls, carpet or curtains but the main part of indoor bioaerosols come from outdoor. In consequence, the ventilation system is the major way to control indoor concentration because its filter retains the main part of microorganisms flow from the outside (Möritz et al, 2001;McLarnon et al, 2006) with an efficiency close to non-biological particle efficiency (Maus and Umhauer, 1997). Both biological and non-biological particles accumulate onto the filtering media.…”

Section: Introductionmentioning

confidence: 99%

SFGP 2007 - Microbial Growth onto Filter Media Used in Air Treatment Devices

Perrier¹,

Coq²,

Andrès³

et al. 2008

International Journal of Chemical Reactor Engineering

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This work deals with microbial growth onto filter media and focuses on the ability of microbial communities to proliferate onto filter media. Two microorganism types are studied: microorganisms from activated sludge of wastewater treatment plant (SM) and a toluene specific consortium (TSC). The filter media considered for this study contain activated carbon fibres (ACF), combined volatile organic compounds (VOC), particles treatment purposes, activated carbon fibres felt (ACFF) and activated carbon and cellulose fibres felt (AC2F2). Using a static growth procedure during 10 days under 100 % relative humidity, artificially contaminated filters are submitted to microbial colonisation. The final concentration of microorganisms per gram of filter have been assessed using a method developed in the lab, based on filter protein content assay. The average surface charge of inocula and filter's fibres are measured to assess the influence of microorganisms adhesion on contamination. The influence of soot particles on TSC proliferation onto AC2F2 filter is then studied. Zeta measures enable the assessment of the implication of soot in microorganisms adhesion onto filter fibres. Consequences of microbial contamination on filter permeability and downstream particles released have then been assessed in a filtration device. Results demonstrate a better resistance of AC2F2 to microbial colonisation. However, SM have more difficulties to proliferate on ACFF than TSC, whereas SM colonise easier AC2F2 than TSC. Charge surface assay has defined an optimal electrostatic compatibility for TSC and AC2F2 and a minimum for SM and ACFF. When soot is added to TSC solution before introduction in AC2F2, high contamination shapes were observed whereas only a slight one occur without soot addition. Zeta potential measures show favourable charge conditions for adhesion of soot on AC2F2 fibres and TSC on soot particles. The soot may thus have played an interface role in microbial adhesion onto media. This means that electrostatic compatibility between particles is a good approach for assessing microbial adhesion onto filters but could not explain the whole mechanism of microbial proliferation. Other parameters like nutrition preferences are certainly involved. The contamination have induced filter characteristics modification. Permeability have decreased until 20 % with microbial concentration. Colonised filters have released up to 450 microbial particles/cm3. Such a release was only observed when AC2F2 was contaminated with fungi using spore as the reproduction vector (inoculum containing TSC and soot).

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Self-supporting smart air filters based on PZT/PVDF electrospun nanofiber composite membrane

Guo

Zhao

et al. 2021

Chemical Engineering Journal

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The efficiency of an air filtration system in the hospital ward

Cited by 5 publications

References 16 publications

The Inpatient Unit in a Cancer Center

The Inpatient Unit in a Cancer Center

SFGP 2007 - Microbial Growth onto Filter Media Used in Air Treatment Devices

Self-supporting smart air filters based on PZT/PVDF electrospun nanofiber composite membrane

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