The role of nano-zero-valent iron in environmental remediation
Nanoscale zero-valent iron (Nzvi), i.e. zero-valent iron particles with a particle size of 1 to 100 nanometers, has the characteristics of strong reducibility, large specific surface area and high reactivity. Unlike macroscopic materials, nano material NZVI has four unique effects:
small size effect, surface effect, quantum effect and macroscopic quantum tunneling effect,
thus having excellent adsorption capacity and high reducibility, which can significantly improve the reactivity and processing efficiency of nanoscale zero-valent Iron Materials.
In recent years, the application potential of nano-zero-valent iron in environmental restoration, ecological protection and pollution control has become increasingly apparent. In addition, whether it is heavy metal removal or the degradation of inorganic and organic pollutants, it can give full play to the direct role of multiple reaction mechanisms in environmental restoration. In addition, as a cutting-edge technology with low secondary pollution and strong restoration ability, nano-zero-valent iron can also provide a highly cost-effective solution in the field of ecological restoration, and its attention is increasing day by day.
In addition to the nano zero-valent iron mentioned above, Sagwell currently mainly provides customers with iron powder UIF, micron-level zero-valent iron, porous iron powder, iron-nickel bimetallic and other materials for environmental remediation applications. Among them, the main ultrafine iron powder UIF and NZVl are equally outstanding, each with its own advantages.
NZVl:
①Highly reactive, easy to agglomerate, difficult to disperse; easy to spontaneously combust, posing a safety hazard
②High production cost
③Extremely delicate, can penetrate and absorb after contact with skin
The aggregation potential is relatively low and the activity is slightly lower than that of NZVI, but it is significantly better than ordinary ZVI. It has a suitable cost and high cost performance, and is a green and environmentally friendly material.
The above is an introduction to the role of nano zero-valent iron in environmental remediation. We hope that it will be helpful to customers with environmental remediation needs in material selection.
Customers who want to consult about Sagwell ultrafine iron powder UIF can contact us at: sales@sagwell.com