摘要
An odorous eliminator consists of the three systems： Firstly, an oxidation system by ozone gas obtained from an ozone generator, type corona discharge was used as an oxidizing agent. This gas has got enough concentration to eliminate malodor and poisonous gas especially H2S. Alternatively, the excess concentration of ozone gas could be used for disinfection into an oxidized bag; Secondly, the odorous was trap and disinfection system by acid or base and water for disinfection air pollution from incomplete oxidation before transfer to an adsorption system; Finally, the adsorption system which is contained high efficiency activated carbon was used as an adsorbent. This research was undertaken to study the method of improving the adsorption capacity of coconut shell-based activated carbon for H2S by surface oxidation and metal addition techniques. The carbon sample treated with 6.0 M HNOs and Zn impregnation gave the highest adsorption capacity for H2S, with increased adsorption efficiency of 230% over that of the untreated sample at 45 ℃. The maximum increase of 180% adsorption efficiency over that of untreated sample was observed for the O3 oxidized sample impregnated with Zn.
