Method for recovering valuable metal
The hydrothermal treatment and adsorption process efficiently recovers valuable metals from seaweed, producing carbon materials and fuel oil, addressing economic disadvantages in existing methods and simplifying post-treatments.
JP2025152082APending Publication Date: 2025-10-09NIPPON STEEL CHEM & MATERIAL CO LTD
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Patent Information
- Application Number
- JP2024053815
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-10-09
AI Technical Summary
Technical Problem
Existing methods for recovering valuable metals from seawater are economically disadvantageous due to low concentrations and high recovery costs, and existing wastewater treatment materials require complex post-treatments.
Method used
A method involving hydrothermal treatment of seaweed to produce wastewater containing valuable metals, followed by adsorption using a sintered body of iron particles and solid carbonaceous matter to capture these metals, with optional carbonization steps to produce carbon materials and fuel oil.
Benefits of technology
This method economically recovers valuable metals while simultaneously producing carbon materials and fuel oil, reducing overall recovery costs and simplifying post-treatment procedures.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a method for economically and advantageously recovering valuable metals from biomass.SOLUTION: A method for recovering valuable metals contained in seaweeds comprises: a hydrothermal treatment step in which seaweeds are mixed with water and subjected to hydrothermal treatment, followed by separating solids and a heavy oil-containing liquid material from a resulting treated product to obtain wastewater; and a collection step in which the wastewater is brought into contact with a metal-collecting material to collect the valuable metals contained in the wastewater on the metal-collecting material. The metal-collecting material used in the collection step is a sintered body containing iron particles and solid carbonaceous matter. The iron particles and the solid carbonaceous matter are bonded and integrated together.SELECTED DRAWING: None
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