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“MSI-X” Iron Powder for Heavy Metal Adsorption

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

Soil Washing Process Flow Using Conventional Techniques

With traditional soil washing techniques, processing costs were required to deal with the fine-grain industrial waste that would always be produced.

Our Proposed Solution for Fine soil particles

JFE's Proposed Solution for Fine-grain Soil
  • 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

  1. Does not easily scatter due to a high specific gravity and a particle size that is not too fine. (high workability)
  2. The Fe dissolution over long periods of time ensures high adsorption properties.
  3. Minimal impact on the surrounding environment due to a neutral pH.
  4. Easy separation and recovery after adsorption due to strong ferromagnetism and high specific gravity.

Chemical Surface Treatment

  1. An increased specific surface area improves reactivity and adsorption performance.
  2. Surface is chemically treated for high initial reactivity.

Sample of MSI-X

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

Particle Size Distribution of MSI-X Iron Powder

SEM Image of Iron Powder Surface

SEM Image of Iron Powder Surface

MSI-X Performance

MSI-X Metal Adsorption Isotherms

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.
Repeated Adsorption Testing of Arsenic and Lead

*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
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