2results about How to "Improve electronic efficiency" patented technology

The application discloses low-cost sulfidized nano zero-valent iron synthesized by using pyrite as raw material and application thereof. The low-cost sulfidized nano zero-valent iron is obtained by using cheap pyrite powder as raw material, adding a small amount of anhydrous FeCl3, and through ball milling, drying and hydrogen reduction. The pyrite powder to which a small amount of anhydrous FeCl3 is added is ball milled by using zirconia ball milling beads which are easy to clean but not easy to be polluted, and then the sulfidized nano zero-valent iron is prepared after drying and reduction. By adjusting parameters such as ball powder ratio, FeCl3 addition amount, heating rate and holding time, the low-cost sulfidized nano zero-valent iron with a particle size of 200-300 nm, zero-valent iron content accounting for more than 90% of total iron content and preparation cost being 11% of that of a laboratory liquid-phase synthesis method is prepared. The material can effectively degrade trichloroethylene (TCE) and florfenicol (FF), has a small hydrogen production amount and a high electron efficiency. The preparation method is simple and easy to operate, has a low cost and has a large-scale production prospect, the degradation performance of pollutants is close to that of the laboratory-prepared sulfidized nano zero-valent iron, and far exceeds that of nano zero-valent iron, and therefore the material has a prospect of being applied to actual groundwater pollution remediation.

The application discloses low-cost sulfidized nano zero-valent iron based on a pyrite oxidation-reduction path and application thereof. Low-cost sulfidized nano zero-valent iron is obtained by the mode of air oxidation and then hydrogen reduction of cheap pyrite powder in a tube furnace. By adjusting and controlling parameters such as oxidation temperature, oxidation time and reduction time, the low-cost lattice-doped sulfidized nano zero-valent iron with a median particle size of less than 300 nm and a zero-valent iron content of 70% is prepared, and the preparation cost is far lower than that of a laboratory liquid-phase synthesis method. The material can effectively degrade trichloroethylene and florfenicol, and has a small hydrogen production amount and a high electron efficiency. The preparation method is simple and easy to operate, and has a large-scale production prospect, and the degradation performance of pollutants is close to that of laboratory-prepared sulfidized nano zero-valent iron, so the material has a prospect of being applied to actual groundwater pollution remediation.