IRON COMPOSITE PARTICLE POWDER FOR PURIFYING SOIL, GROUND WATER, AND WASTE WATER, PURIFYING AGENT INCLUDING THE IRON COMPOSITE PARTICLE POWDER, AND METHOD FOR PURIFYING SOIL, GROUND WATER, AND WASTE WATER CONTAMINATED BY ORGANIC HALOGEN COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a purifying agent capable of efficiently, sustainably, and economically decomposing/insolubilizing aliphatic organic halogen compounds, aromatic organohalogen compounds, and heavy metal such as cadmium, lead, chromium, arsenic, selenium, cyanide, etc., included in soil, ground water, and waste water.;SOLUTION: Iron composite particle powder is made of α-Fe and magnetite used for purification of soil, ground water, and waste water contaminated by organic halogen compounds. In a X-ray diffraction spectrum of the iron composite particle powder, intensity ratio ( D₁₁₀/(D₃₁₁+D₁₁₀)) between diffraction intensity D₁₁₀ of an α-Fe surface (110) and diffraction intensity D₃₁₁ of a magnetite surface (311) is 0.30-0.95, an Al content is 0.10-1.50 wt.%, an S content is 3,500-7,000 ppm, and the content of Ni and/or Cu is 0.1-3.0 wt.%.;COPYRIGHT: (C)2014,JPO&INPIT