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Microbial Colonization, Biofilm Formation, and Malodour of Washing Machine Surfaces and Fabrics and the Evolution of Detergents in Response to Consumer Demands and Environmental Concerns.
Antibiotics (Basel)
December 2024
Microbiology at Interfaces, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK.
Bacterial attachment and biofilm formation are associated with the contamination and fouling at several locations in a washing machine, which is a particularly complex environment made from a range of metal, polymer, and rubber components. Microorganisms also adhere to different types of clothing fibres during the laundering process as well as a range of sweat, skin particles, and other components. This can result in fouling of both washing machine surfaces and clothes and the production of malodours.
View Article and Find Full Text PDFOptimization of iron electrocoagulation parameters for enhanced turbidity and chemical oxygen demand removal from laundry greywater.
Sci Rep
July 2024
Interdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum & Minerals, 31261, Dhahran, Saudi Arabia.
This study explores the optimization of iron electrocoagulation for treating laundry greywater, which accounts for up to 38% of domestic greywater. Characterized by high concentrations of surfactants, detergents, and suspended solids, laundry greywater presents complex challenges for treatment processes, posing significant environmental and health risks. Utilizing response surface methodology (RSM), this research developed a second-order polynomial regression model focused on key operational parameters such as the area-to-volume ratio (A/V), current density, electrolysis time, and settling time.
View Article and Find Full Text PDFSkilled nursing facility staffing shortages: Sources, strategies, and impacts on staff who stayed.
Health Serv Res
December 2024
Geriatrics Research Education and Clinical Center, Greater Los Angeles Veterans Administration, Los Angeles, California, USA.
Objective: To examine skilled nursing facility (SNF) staffing shortages across job roles during the COVID-19 pandemic. We aimed to capture the perspectives of leaders on the breadth of staffing shortages and their implications on staff that stayed throughout the pandemic in order to provide recommendations for policies and practices used to strengthen the SNF workforce moving forward.
Study Setting And Design: For this qualitative study, we engaged a purposive national sample of SNF leaders (n = 94) in one-on-one interviews between January 2021 and December 2022.
Integration of Full-Size Graywater Membrane-Aerated Biological Reactor with Reverse Osmosis System for Space-Based Wastewater Treatment.
Membranes (Basel)
May 2024
Department of Civil, Environmental, and Construction Engineering, Texas Tech University, 911 Boston Avenue, Lubbock, TX 79409, USA.
To date, life support systems on the International Space Center (ISS) or those planned for upcoming moon/Mars missions have not included biological reactors for wastewater treatment, despite their ubiquitous use for the treatment of terrestrial wastewaters. However, the new focus on partial gravity habitats reduces the required complexity of treatment systems compared with those operating in micro-gravity, and the likely addition of large-volume wastewaters with surfactant loads (e.g.
View Article and Find Full Text PDFIsolation and characterization of a cold-active, detergent-stable protease from Serratia sp. TGS1.
J Basic Microbiol
October 2023
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China.
Psychrophiles are cold-adapted microorganisms living in cold regions and are known to generate cold-active enzymes such as proteases, lipases, and peptidases. These types of enzymes are a major part of the market of the food and textile sector. This study aimed to isolate and characterize the cold-active and detergent-stable, extracellular protease from psychotrophic bacteria Serratia sp.
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