Activated Carbon Odor Adsorption Treatment
topic
Activated carbon (AC) particles (50–200 µm, BET surface area 800–1,500 m²/g) are incorporated into textile coatings (acrylic binder, 100–300 g/m² AC add-on) or spun into fiber matrices (activated carbon fiber, ACF, 5–20% AC content) to adsorb odor molecules via Van der Waals forces in micropores (pore diameter <2 nm). Adsorption capacity of 200–400 mg/g for isovaleric acid (primary sweat odor compound) is regenerated by washing at 60°C, restoring 80–90% capacity after 20 wash cycles. Military CBRN suits (JSLIST) use ACF at 200–400 g/m² to adsorb chemical warfare agent vapors (HD, GB) with protection level exceeding 24 hours. Commercial sportswear applications at 50–100 g/m² achieve >80% odor reduction (AATCC TM212) for 15–20 wear cycles.
Role
Provides passive, chemical-free odor control for premium activewear and military CBRN protective suits through high-surface-area physical adsorption, with renewable capacity through laundering unlike biocidal approaches requiring permanent active agent presence.