SIMULTANEOUS REMOVAL OF ACETALDEHYDE, AMMONIA AND HYDROGEN-SULFIDE FROM AIR BY ACTIVE-CARBON IMPREGNATED WITH P-AMINOBENZOIC ACID, PHOSPHORIC-ACID AND METAL-COMPOUNDS

Simultaneous removal of acetaldehyde, ammonia, and hydrogen sulphide f rom air by the impregnated active carbon was studied at 25-degrees-C. p-Aminobenzoic acid (PABA), phosphoric acid (H3PO4), and metal compoun d such as copper (11) chloride dihydrate (CuCl2.2H2O), copper (II) nit rate trihydrate (Cu(NO3)2.3H2O), and potassium iodide (KI) were invest igated as impregnation ingredients. Acetaldehyde and ammonia were simu ltaneously removed from air by the active carbon impregnated with PABA and H3PO4. The removal was found to be made mainly through chemical r eaction. Acetaldehyde, ammonia, and hydrogen sulphide were simultaneou sly removed from air by the active carbon impregnated with PABA, H3PO4 , and metal compound such as CuCl2 . 2H2O, Cu(NO3)2 . 3H2O, and KI.