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Iron Particles in Water

Typical particle size:
100-200 nanometers

Particle Surface area:
37-58 Meters²/gram

Particle Shape:
Spherical

Dr. Wei-xian Zhang of Lehigh University, a leading researcher in the field of environmental nanoparticle technology, analyzed physical characteristics of several samples of the PolyMetallix particles. Following is a summary of the characterization data: The median particle size of the PolyMetallix particles ranged from 66 to 187 nanometers. Polyflon has the ability to manufacture particles in various sizes to meet specific needs of remediation projects. To view Particle Size Distribution Study, please click here.

The PolyMetallix particles can be characterized as aggregates or assemblages of spherical iron clusters. Particles smaller than 100 nanometers exhibited bud-like chains of clusters. The spherical quality of the particles contributes to the relatively large surface area of the material.

The average moisture content of the PolyMetallix particles was 40.61%.

The specific surface measurements of the PolyMetallix particles ranged from 37 to 58.7 square meters per gram. The high specific surface area results from the bud-like clusters of the particles. The range of surface areas is very large as compared to commercially available microscale iron (less than 1 square meter per gram) and comparable to other nanoscale iron material evaluated by Lehigh University. For BET Analysis Reports, please click here.
For surface area comparison of available iron materials, please click here.

The equilibrium pH values for aqeous slurries of the PolyMetallix particles ranged from 8.86 to 8.89 standard units. The ORP values ranged from -450.9 to 507.8 millivolts. The equilibrium ORP data indicate strongly reducing conditions produced bt the PolyMetallix particles, a critical parameter for remedial applications.

The specific surface values determined were quite substantial: several orders of magnitude larger than commercially available microscale iron powders and comparable to other nanoscale iron materials evaluated by Dr. Zhang. This contributes to the high reactivity of the PolyMetallix particles. A complete report on the physical charaterization performed by Lehigh University is available for download or viewing here: PDF document (175 KB). Please note that the file may load in your browser, and will pause until it is loaded. To save the document to your computer, right-click the link and select "Save Target As".