METHOD OF PREPARING NANO-SCALE ZERO-VALENT IRON AND APPLICATION THEREOF

摘要

A method of preparing a nano-scale zero-valent iron, comprising the following steps: (1) adding, in an inert atmosphere, polyethylene glycol and deoxy ethanol to an aqueous solution of ferrous salt, and mixing; (2) mixing the solution obtained in step (1) with an alkaline aqueous solution containing boron hydride and performing a reduction reaction; (3) after the reduction reaction in (2) is complete, obtaining a precipitate; and (4) vacuum drying the precipitate to obtain nano-scale zero-valent iron. A surfactant combined with the prepared nano-scale zero-valent iron can markedly improve remediation efficiency of soil polluted with volatile organic compounds (VOCs).