Products
Environmental Products
Fix-AllTM - Heavy metal absorber and insolubilizer -
Electron microscopic picture of iron oxideFix-AllTM safely and readily absorbs and insolubilizes heavy metals of contaminated soil and water in pH neutral conditions, thereby reducing the diffusion of environmental contamination.
Strengths
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Strength 1By-products of titanium dioxide (gypsum and iron oxide) with high functionality added by our proprietary ultrafine particle technology
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Strength 2pH neutrality and the ability to insolubilize a wide range of heavy metals (arsenic, selenium, lead, and cadmium)
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Strength 3Usable with mercury and fluorine
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Strength 4Stable insolubilization performance efficiently preventing heavy metals from further leaching
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Strength 5Compatible with slurry injection as well as with powder mixing; sheet products also available
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Strength 6Simultaneous solidification and insolubilization can be performed when combined with a neutral solidifier.
Typical Applications
- In-situ insolubilization of contaminated soil
- Contamination diffusion prevention walls
- Adsorption layer method
- Treatment of heavy metal-contaminated water
Chief components
- Fe2O3・nH2O
- CaSO4・nH2O
Specific surface area of iron oxide 180m2/g or more
Intended use
- Mainly used for four elements: arsenic, selenium, lead and cadmium.
- Also used for cleaning up mercury, hexavalent chromium and fluorine.
Absorption and re-migration test
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*1Fix-AllTM residue contains about 100mg/kg of heavy metals.
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*2Standard test method GEPC·TS-02-S1 by Geo-Environmental Protection Center
Absorption test
*You can see the entire image in the figure by scrolling horizontally.
| Heavy metals | Solution concentration mg/L | |
|---|---|---|
| Original water | Treated water | |
| As | 20 | < 0.01 |
| Se | 20 | < 0.01 |
| Cd | 20 | < 0.01 |
| Pb | 20 | < 0.01 |
Re-migration test of heavy metals absorption residue
*You can see the entire image in the figure by scrolling horizontally.
| Heavy metals | Solution concentration mg/L | Environmental standards mg/L | ||
|---|---|---|---|---|
| Test in accordance with 46th announcement by MOE | Acid addition |
Alkali addition |
||
| As | < 0.01 | < 0.01 | < 0.01 | 0.01 |
| Se | < 0.01 | < 0.01 | < 0.01 | 0.01 |
| Cd | < 0.01 | < 0.01 | < 0.01 | 0.01 |
| Pb | < 0.01 | < 0.01 | < 0.01 | 0.01 |
An example of arsenic purification
Technical Certificate
The Society of Materials Science, Japan