With traditional soil washing techniques, processing costs were required to deal with the fine-grain industrial waste that would always be produced.
With MSI-X, we can even purify fine soil particles traditionally handled as industrial waste.
Comparison with Conventional Techniques
Soil Washing Process Flow Using Conventional Techniques
Our Proposed Solution for Fine soil particles
- Using MSI-X enables purification of any type of soil and even fine soil particles traditionally handled as industrial waste.
- Reusing recovered iron powder also has the potential to reduce costs.
MSI-X Characteristics
Iron Powder Made from Pure Iron
- Does not easily scatter due to a high specific gravity and a particle size that is not too fine. (high workability)
- The Fe dissolution over long periods of time ensures high adsorption properties.
- Minimal impact on the surrounding environment due to a neutral pH.
- Easy separation and recovery after adsorption due to strong ferromagnetism and high specific gravity.
Chemical Surface Treatment
- An increased specific surface area improves reactivity and adsorption performance.
- Surface is chemically treated for high initial reactivity.
Sample of MSI-X
MSI-X Physical Properties
| Main component | Fe (90% minimum) |
|---|---|
| Bulk density (g/cm3) | Ave.3.0 |
| pH | 6-8 |
| Particle diameter (μm) | Ave.130 |
Particle Size Distribution of MSI-X Iron Powder
SEM Image of Iron Powder Surface
MSI-X Performance
MSI-X Metal Adsorption Isotherms
*The provided data is the result of laboratory testing performed according to internal testing methods. Corresponding performance at actual sites is not guaranteed.
Adsorption at Equilibrium Concentration per Environmental Standards
| Element | Environmental standard (mg/L) | Adsorption (mg/g) |
|---|---|---|
| As（V） | 0.01 | 1.0 |
| Se（VI） | 0.01 | 0.3 |
| Pb | 0.01 | 1.6 |
| Cd | 0.01 | 0.2 |
| Cr（VI） | 0.05 | 2.7 |
*The provided data is the result of laboratory testing performed according to internal testing methods. Corresponding performance at actual sites is not guaranteed.
Repeated Adsorption Testing of Arsenic and Lead
| Initial Concentration | (1) As solution: 1.0 mg/L (2) Pb solution: 1.0 mg/L |
|---|---|
| Amount of additive | 3wt% |
| Agitation time | 10 minutes |
| Repetitions | Recovered MSI-X was added to the As and Pb solutions 15 times using the same procedure. |
*The provided data is the result of laboratory testing performed according to internal testing methods. Corresponding performance at actual sites is not guaranteed.
Comparison with Conventional Techniques
MSI-X is used in various purification processes.
This product is used to treat muddy water that contains heavy metals such as arsenic and soil contaminated with heavy metals.
Actual Example Projects
| Project summary | Applications | Comments |
|---|---|---|
| Company A Heavy Metal Remediation Project | Groundwater remediation | - Mechanical agitation to remove arsenic |
| Prefecture A Heavy Metal Remediation Project | Heavy metal remediation | Magnetic separation using washing and fine-grain screening |
| Prefecture B Shield Project | Shield construction remediation | - Magnetic separation to remove arsenic |
Contact
Environment Project Dept.
TEL: +81-3-5445-5208 FAX: +81-3-5445-5220
TEL: +81-3-5445-5208 FAX: +81-3-5445-5220
