| 摘要 |
PURPOSE:To obtain an adsorbent adsorbing both of hydrogen sulfide and ammonia gas by mixing a metal such as Fe, Co or Ni with oxide of metal such as Zr or Sn and adjusting the pH of the resulting mixture to form a precipitate. CONSTITUTION:As an A-group metal, Fe(II), Co(II), Ni(II) or the like are used and, as a B-group metal, Zr(IV) and Sn(IV) are used. An aqueous solution of an acidic salt or hydroxide of the A-group metal and an aqueous solution of an oxy-metal salt of the B-group metal are mixed and the pH of the resulting mixture is controlled to form a precipitate which is, in turn, dried. The adsorbent thus obtained shows high adsorbing capacity to both of acidic malodorous gas such as hydrogen sulfide and alkaline malodorous gas such as ammonia and has a high adsorbing speed and rapidly develops deodorizing effect to keep the same for a long period of time. |
