Hospital laundries and their role in medical textiles

Beringer, Jan; Kurz, Johannes L.

doi:10.1533/9780857093691.3.360

Cited by 3 publications

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“…[1][2][3] Among them, mechanical action is normally controlled by the washer through washing time, wash spin speed, and reversing rhythm. When the washer changes the mechanical actions, the fabric movement in the washer also changes, and the changed movements affect washing efficiency.…”

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confidence: 99%

“…Mechanical action, chemical action, time, and temperature are four factors in the washing process that constitute the so-called as Sinner's Circle, which was utilized to explain the basic principles of cleaning by Sinner. [1][2][3] Among them, mechanical action is normally controlled by the washer through washing time, wash spin speed, and reversing rhythm. When the washer changes the mechanical actions, the fabric movement in the washer also changes, and the changed movements affect washing efficiency.…”

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The effect of fabric movement on washing performance in a front-loading washer III: Focus on the optimized movement algorithm

Yun

Park

2015

Textile Research Journal

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The objectives of this study were to investigate the correlation between fabric movement and washing efficiency in a front-loading washer and to make an algorithm for improving washing efficiency by optimizing fabric movements. A regression model between fabric movement and washing efficiency was made using 14 movement indexes. The angle change of the fabric gravity center, the speed difference between the drum and the fabric, and the shape factor were found to be determining factors for washing efficiency. Various kinds of wash spin speed were employed for making a complex movement algorithm, since it was found that turbulent or complex movement improves the washing efficiency. The optimal algorithm saved energy (25%) and time (27%), as well as achieving higher washing efficiency (4.8%).

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The effect of fabric movement on washing performance in a front-loading washer III: Focus on the optimized movement algorithm

Yun

Park

2015

Textile Research Journal

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“…Among the various sectors, laundry is classified as the sector that demands the highest volumes of water that generates a proportional amount of complex effluents with high toxicity and recalcitrance. 7,22,[36][37][38][39][40] Due to the diversity of chemicals added to the washing processes, hospital laundry effluents may contain soap, 29,41 detergents, [41][42][43][44] surfactants, 41,45,46 sodium hypochlorite, 47,48 hydrogen peroxide, 7,49,50 peracetic acid, [49][50][51] softeners, 52,53 neutralizing additives, 54 chlorine, 43,44,48 adsorbable organic halogens (AOX), 44,55 nitrogen, phosphorus, 7,37,56 and heavy metals [57][58][59][60] that give these residues the power to exercise less biodegradable characteristics to the effluent generated by the hospital units. 9 However, tissues from different areas such as the operating room, intensive care unit, hospitalization, hemodialysis, imaging, emergency room, among others, are sources of dirt such as blood, pus, medication residues, secretions and excretions, [61][62]…”

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Use of Natural Coagulants/Flocculants in the Treatment of Hospital Laundry Effluents

Abreu¹,

Montel²,

Scapin³

2020

Preprint

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<p>Water is a fundamental substance for the existence of life on earth. However, globally there is a freshwater crisis. Hospitals generate exorbitant volumes of effluents (5 to 15 times more toxic than urban ones). Hospital laundry is known for demanding the highest volumes of water, generating a proportional amount of complex effluents with high toxicity and recalcitrance. Adequate treatment for hospital wastewater is always an essential solution. Among all treatment methods, coagulation/flocculation emerges as one of the best alternatives. However, the use of traditional compounds such as aluminium sulfate has caused secondary pollution; its residues are harmful to public and environmental health. In this sense, the present study used natural compounds that do not cause adverse effects, such as chitosan/hydroxyapatite, to clarify the laundry effluents of the largest hospital from the Tocantins. The results showed that the hydroxyapatite associated with chitosan, at pH 6 and dosage of 50 mg/L, reduced the turbidity and apparent colour of these wastewaters by up to 67 and 55%, respectively. With lower performance and higher dosage (60 mg/L), the chitosan gel used (pH 6) promoted a maximum reduction of 35% of the apparent colour and 40% of turbidity.<br></p>

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Impact Determination Exercise in Cyber Security Assessments of Industrial Automation and Control Systems

Dénes,

Semperger

2024

2024 IEEE 11th International Conference on Computational Cybernetics and Cyber-Medical Systems (ICCC)

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Hospital laundries and their role in medical textiles

Cited by 3 publications

References 0 publications

The effect of fabric movement on washing performance in a front-loading washer III: Focus on the optimized movement algorithm

The effect of fabric movement on washing performance in a front-loading washer III: Focus on the optimized movement algorithm

Use of Natural Coagulants/Flocculants in the Treatment of Hospital Laundry Effluents

Impact Determination Exercise in Cyber Security Assessments of Industrial Automation and Control Systems

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