Preventing biofilm and avoiding biofilm removal and maintenance in ultrafiltration in water treatment
Publisher FILTECH
J. Ronquillo*, Lam-X, Czech Republic
LAM-X technology is an advanced nanofiber filtration platform designed to address microbial contamination and biofouling in water treatment and process water systems. Originally developed for medical and life-science applications, the technology builds on electrospun nanofiber membranes engineered for exceptionally high surface area, high porosity, and strong biological interaction. These characteristics enable high filtration efficiency at low pressure drop
The Lam-X filtration media consists of electrospun nanofiber layers with precisely tunable fiber diameters and pore sizes, allowing optimization of hydraulic performance and contaminant capture. Two primary polymer systems are employed: polyester nanofibers, which offer high water flux and permeability for operation at moderate temperatures up to approximately 40 °C, and polyethersulfone (PES) nanofibers, which provide enhanced thermal and chemical resistance for more demanding operating conditions.
A defining feature of LAM-X technology is the integration of photosensitizer molecules immobilized within the nanofiber polymer matrix. These photosensitizers are non-leaching, stable over repeated activation cycles, and do not introduce toxic substances into the water stream. Upon exposure to blue light in the wavelength range of approximately 405–470 nm, the photosensitizers enter an excited state and transfer energy to surrounding oxygen molecules, resulting in the generation of singlet oxygen (¹O₂) a short-lived antimicrobial species that inactivates microorganisms through oxidative damage. This mechanism eliminates 99.9999% of bacteria in just 5 min, leaves no residual disinfectants downstream, and does not contribute to the development of microbial resistance.
LAM-X employs a preventative biofouling control strategy in which microorganisms captured during normal filtration are periodically inactivated through brief blue-light exposure, typically around five minutes per day. Light activation is preferably performed during system shutdown or low-flow periods using low-energy LED sources. This approach prevents ....
Published in: FILTECH 2026 Conference
Date of Conference: 30 June - 2 July 2026
DOI: -
Presenter's Affiliation: Lam-X
Publisher: FILTECH Exhibitions GmbH & Co. KG
Country: Czech Republic
Electronic ISBN: 978-3-941655-25-6
Conference Location: Cologne, Germany
Keywords: Bacteria, Biofouling, Biofilm Reduction, Bacteriophage Removal, Biofilm