MAGNETIC ADSORBENT, PHOTOCATALYST SUPPORTING ADSORBENT, MAGNETIC PHOTOCATALYST, PHOTOCATALYST SUPPORTING MAGNETIC ADSORBENT, AND HARMFUL SUBSTANCE DECOMPOSING TREATMENT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a magnetic adsorbent not damaged in its original adsorbing function, enhanced in magnetization efficiency and having good treatment efficiency, and a photocatalyst supporting magnetic adsorbent constituted so as to certainly hold photocatalytic particles on a porous adsorbing material over a long period of time, sufficiently developing photocatalytic action even in photocatalytic particles in suspending water, capable of being also reused and having high practicality.;SOLUTION: The photocatalyst supporting magnetic adsorbent is manufactured by dispersing magnetic particles, an inorganic porous adsorbing material and photocatalytic particles in water, subsequently adding an inorganic flocculant to the obtained aqueous dispersion and adjusting the pH of the dispersion to flocculate the particles and drying the flocculated particles to heat and solidify them. The photocatalyst supporting magnetic adsorbent is mixed with a material to be treated in a vapor or liquid phase to adsorb a harmful substance on the inorganic porous adsorbing material to decompose the harmful substance by photocatalytic reaction and subsequently magnetically separating and recovering the photocatalyst supporting magnetic adsorbent to separate and remove the harmful substance.;COPYRIGHT: (C)2006,JPO&NCIPI