PROBLEM TO BE SOLVED: To provide a treating method excellent in removal performance of ethylene oxide gas contained in a waste gas after sterilization treatment.SOLUTION: The treating method of ethylene oxide gas contained in a waste gas comprises contacting activated carbon made from petroleum, coal or plants in powder, granular or fibrous state, or specially molded, carrying a sulfuric acid aqueous solution of weight concentration of 0.01% or more, preferably 0.01 to 5% with a waste gas discharged from a sterilization treatment device to cause the activated carbon to absorb ethylene oxide gas to be decomposed into ethylene glycol.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】滅菌処理後の廃ガスに含まれる酸化エチレンガスの除去性能に優れた処理方法を提供する。【解決手段】粉末、粒状、繊維状のあるいは特殊成形した、石油、石炭または植物を原料とする活性炭であって、硫酸水溶液を0.01%以上重量濃度、好ましくは0.01~5%重量濃度で担時させた活性炭に、滅菌処理装置より排出された廃ガスを接触させて酸化エチレンガスを吸着させ、エチレングリコールに分解する処理方法。【選択図】図5
