Filtrach

Filtrach is a term used to describe a class of filtration technology that uses hierarchical porous networks and selective interactions to remove particulates and dissolved species from gases and liquids. It appears in environmental, industrial, and consumer contexts.

The core concept combines a porous substrate with functional coatings and a selective barrier layer to achieve staged separation. Particle capture relies on size exclusion, electrostatic attraction, and chemical affinity, enabling removal of a broad range of contaminants while preserving useful components.

Typical constructions include a porous substrate (ceramic, polymer, or composite), a functional coating to provide charge and binding sites, and a protective outer layer to resist fouling. Pore structures are engineered through methods such as phase inversion, electrospinning, or templating.

Variants are described by pore architecture, material class, and intended medium (gas or liquid). Filtrach devices offer tunable selectivity, relatively low energy use, and compatibility with high-flow conditions, but may incur fouling and higher upfront costs.

Applications span air purification, HVAC filtration, water treatment, chemical processing, and electronics manufacturing cleanrooms. In research contexts, filtrach serves as a platform for selective removal of nanoparticles, dyes, or volatile organic compounds.

The concept emerged in modern filtration science in the 2010s, with ongoing work on scalable fabrication, fouling resistance, and integration with sensing and self-cleaning features.