Sulfur containing iron powder has been developed for a remediation of soil contaminated with volatile organic compounds (VOC). Two types of S containing powders prepared by different methods were investigated. These iron powders showed higher degradation rates of VOC than that of pure iron powder. In S containing powder prepared by an atomizing method, S was deposited locally on an surface of particles. On the other hand, in the powder prepared by a reduction method, S was uniformly dispersed on the surface area of iron particles. And the latter showed high degradation rate even at a low S content as 0.04 mass%. It seems that a local cell structure on the surface of iron particles accelerates the degradation of VOC.
