Sim, Kyoung Mi Kim, Kyung Hwan Hwang, Gi Byoung Seo, SungChul Bae, Gwi-Nam Jung, Jae Hee 2024-01-20T09:01:13Z 2024-01-20T09:01:13Z 2021-09-02 2014-09-15 0048-9697 https://pubs.kist.re.kr/handle/201004/126347 Activated carbon fiber (ACF) filters have a wide range of applications, including air purification, dehumidification, and water purification, due to their large specific surface area, high adsorption capacity and rate, and specific surface reactivity. However, when airborne microorganisms such as bacteria and fungi adhere to the carbon substrate, ACF filters can become a source of microbial contamination, and their filter efficacy declines. Antimicrobial treatments are a promising means of preventing ACF bio-contamination. In this study, we demonstrate the use of Sophora flavescens in antimicrobial nanoparticles coated onto ACF filters. The particles were prepared using an aerosol process consisting of nebulization-thermal drying and particle deposition. The extract from S. flavescens is an effective, natural antimicrobial agent that exhibits antibacterial activity against various pathogens. The efficiency of Staphylococcus epidermidis inactivation increased with the concentration of S. flavescens nanoparticles in the ACF filter coating. The gas adsorption efficiency of the coated antimicrobial ACF filters was also evaluated using toluene. The toluene-removal capacity of the ACF filters remained unchanged while the antimicrobial activity was over 90% for some nanoparticle concentrations. Our results provide a scientific basis for controlling both bioaerosol and gaseous pollutants using antimicrobial ACF filters coated with S. flavescens nanopartides. (C) 2014 Elsevier BM. All rights reserved. English ELSEVIER SCIENCE BV ULTRAVIOLET GERMICIDAL IRRADIATION PULMONARY TOXICITY SOPHORAFLAVANONE-G AIR BACTERIAL BIOAEROSOLS PARTICLES RESPONSES PROGRESS DIOXIDE Development and evaluation of antimicrobial activated carbon fiber filters using Sophora flavescens nanoparticles Article 10.1016/j.scitotenv.2014.06.002 1 SCIENCE OF THE TOTAL ENVIRONMENT, v.493, pp.291 - 297 SCIENCE OF THE TOTAL ENVIRONMENT 493 291 297 scie scopus 000340312000031 2-s2.0-84902602981 Environmental Sciences Environmental Sciences & Ecology Article ULTRAVIOLET GERMICIDAL IRRADIATION PULMONARY TOXICITY SOPHORAFLAVANONE-G AIR BACTERIAL BIOAEROSOLS PARTICLES RESPONSES PROGRESS DIOXIDE Activated carbon fiber (ACE) filter Sophora flavescens Air filtration Nanoparticles