UH / HH ZVI Zero Valent Iron Powder
Factory of Shanghai Knowhow Powder-Tech Co.,Ltd. - Product introduction :Zero Valent Iron (ZVI) is a green & eco-friendly material, which can be us

Product introduction :

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Zero Valent Iron (ZVI) is a green & eco-friendly material, which can be used as a reducing agent in the environment remediation process. ZVI can remove various contaminants by chemical reduction, adsorption and co-precipitation. Furthermore, ZVI could also be combined with bioremediation to significantly improve the remediation efficiency.


Our ZVI are made by a unique chemical method, with particle size range of 2 um - 250 um.

Compared with conventional ZVI powder,our ZVI powders have the characteristics of
• large specific surface area
high reaction activity (>50 times higher than conventional ZVI)
• good adsorption capacity
high purity (no harmful heavy metals)
• strong reduction property (ORP can reach-400mV)
• good longevity
which could significantly improve the removal efficiency of contaminants such as chlorinated solvent,hexavalent chromium in soil and groundwater,and shorten the environmental remediation time.


UIF(0.5-5μm)

Our UIF has been used in EZVI technology in the U.S. environmental market since 2004, which is well received by customers who we maintain long-term relationships with since then. The light weight of UlF helps the formation of suspension, maintenance of EZVI stable water in oil emulsified structure. UlF with spheroidal geometry could help to reduce the internal friction and improve the diffusion of EZVI.

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Characteristic:
* Spheroidal geometry Well controlled particle size between 0.5-5 μm.
* High specific surface area, reduction property, chemical i reactivity and adsorption performance
* Helps to form the water in oil suspension and the diffusion of EZVI
* Significantly improve the remediation efficiency



Grade
Geometry
Particle Size Distribution
Apparent Density 
(g/cm³)
Tap Density
(g/cm³)
Chemical analysis
Application
D10
D50
D90
0.90
2.16
Fe≥99.55
EZVI
UIF
Spheroidal
1.1μm
2.55μm
4.21μm
O≤0.80

Table 1 ZVI Reactivity as Change/Decrease in PCE Removal (μg/L per g ZVI/hr)


UIFZVI-AZVI-BZVI-CZVI-D
Ave. Size (um)
3
45
297
125
297
Ave. Size (mesh)>5000 - <2500>1200 - <170>170 - <35>1200 - <35>50 - <8
ApplicationEZVIInjectionPRBs

SSA (m³/g)>0.900.360.320.970.70
Fe %>98>98>98>95>95

Reaction Time
72h10.587.002.879.688.27
168h8.216.532.906.735.26
Active Loss (%)22.46.7030.536.4

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