AIM Traditional filtration materials, predominantly composed of non-biodegradable synthetic fibers, often fall short in capturing ultrafine particulate matter and contribute to environmental pollution. Our research addresses these challenges by incorporating sustainable materials into the filtration process. Our innovative membranes, derived from a Silk Fibroin-based matrix, exhibit exceptional performance in pollutant capture while being biodegradable, thus minimizing ecological impact. METHODS Silk fibroin (SF) is extracted from silkworm cocoons and processed into nanofibers using a green electrospinning technique, utilizing water as the solvent. Various chemicals can be added to the spinning solutions to modulate the desired functionality of the nanofibers. Finally, the SF-based nanofibers are deposited onto a natural-based support, creating an entirely eco-friendly filtration medium. The filtration performance is assessed by measuring the penetration of NaCl aerosol particles at a velocity of 5.3 cm/s, in analogy with EN149:2001 standard. By employing Design of Experiments (DOE) methodologies, we optimized the electrospinning parameters to develop membranes that excel in filtration efficiency and functional properties, ultimately aiming to improve indoor air quality in various environments. RESULTS In this study, we present the mechanical, morphological, and functional characterization of electrospun SF-based nanofibrous filters, highlighting the versatility gained from incorporating various chemicals into the spinning solution, including natural antimicrobial agents. Key outcomes include the development of high-efficiency membranes achieving over 98% filtration efficiency for fine particles, enhanced antimicrobial activity against common pathogens, and comprehensive evaluations of compostability and environmental safety. CONCLUSION This research introduces a sustainable air filter fabricated from electrospun silk fibroin, demonstrating high filtration efficiency and low pressure drop, making it a viable candidate for various air filtration applications. Our innovative membrane not only promotes economic growth through the valorization of industrial by-products but also contributes to public health by improving indoor air quality and fostering a circular economy, positioning Silk Fibroin at the forefront of sustainable air filtration innovation. This presentation will elaborate on our methodology, anticipated results, and the transformative potential of SF nanofibers in addressing both environmental sustainability and public health challenges.
Sustainable silk fibroin filtration solutions for healthier environments
BURATTI Elena;BERTOLDO Monica;
2025
Abstract
AIM Traditional filtration materials, predominantly composed of non-biodegradable synthetic fibers, often fall short in capturing ultrafine particulate matter and contribute to environmental pollution. Our research addresses these challenges by incorporating sustainable materials into the filtration process. Our innovative membranes, derived from a Silk Fibroin-based matrix, exhibit exceptional performance in pollutant capture while being biodegradable, thus minimizing ecological impact. METHODS Silk fibroin (SF) is extracted from silkworm cocoons and processed into nanofibers using a green electrospinning technique, utilizing water as the solvent. Various chemicals can be added to the spinning solutions to modulate the desired functionality of the nanofibers. Finally, the SF-based nanofibers are deposited onto a natural-based support, creating an entirely eco-friendly filtration medium. The filtration performance is assessed by measuring the penetration of NaCl aerosol particles at a velocity of 5.3 cm/s, in analogy with EN149:2001 standard. By employing Design of Experiments (DOE) methodologies, we optimized the electrospinning parameters to develop membranes that excel in filtration efficiency and functional properties, ultimately aiming to improve indoor air quality in various environments. RESULTS In this study, we present the mechanical, morphological, and functional characterization of electrospun SF-based nanofibrous filters, highlighting the versatility gained from incorporating various chemicals into the spinning solution, including natural antimicrobial agents. Key outcomes include the development of high-efficiency membranes achieving over 98% filtration efficiency for fine particles, enhanced antimicrobial activity against common pathogens, and comprehensive evaluations of compostability and environmental safety. CONCLUSION This research introduces a sustainable air filter fabricated from electrospun silk fibroin, demonstrating high filtration efficiency and low pressure drop, making it a viable candidate for various air filtration applications. Our innovative membrane not only promotes economic growth through the valorization of industrial by-products but also contributes to public health by improving indoor air quality and fostering a circular economy, positioning Silk Fibroin at the forefront of sustainable air filtration innovation. This presentation will elaborate on our methodology, anticipated results, and the transformative potential of SF nanofibers in addressing both environmental sustainability and public health challenges.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
