Main substances for adsorption and deodorisation

Aldehydes

  • Formaldehyde: The most representative cause of Sick Building Syndrome, and a carcinogen.
  • Acetaldehyde: A representative cause of tobacco smell and a cause of hangovers.
  • Nonenal: The primary cause of aging odour.

Short-chain fatty acids

  • Acetic acid: a substance that causes the smell of sweat and tobacco
  • Isovaleric acid: the main cause of armpit and foot odour

Alkaline odourous substances

  • Ammonia: The most representative cause of unpleasant odours, found in various foul smells such as body odour and urine odour.
  • Amines: The primary substances causing pet odours and the smell of decaying meat or fish.

Adsorption and deodorisation mechanisms

Examples of aldehyde adsorption and deodorisation

  • Formaldehyde (HCHO): R-NH2 + HCHO → R-NCH2 + H2O
  • Acetaldehyde (CH3CHO): R-NH2 + CH3CHO → R-NCHCH3 + H2O

Examples of adsorption and deodorisation of short-chain fatty acids

  • Acetic acid (CH3COOH): R-NH2 + CH3COOH → R-NHCOCH3 + H2O

Examples of adsorption and deodorisation of alkaline odour substances

  • Ammonia (NH3): R-SO3H + NH3 → R-SO3NH4
Adsorption mechanism