Complex Ionic Compound for Metal Ion Recovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The recovery of metal ions from spent lithium-ion batteries is challenging due to the depletion of natural resources and environmental hazards associated with these metals.
Innovation Solution
A complex ionic compound is developed, comprising a carrier (C:Na—Ni/Al2O3 composite powder), a halogen-containing siloxane bridging agent, and adsorbents like 1-butyl-3-methylimidazolium hexafluorophosphate, which facilitates the adsorption and separation of metal ions such as manganese, cobalt, nickel, and lithium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used to recover metal ions from spent lithium-ion batteries, then the recovery process becomes complex and costly, but the efficiency and simplicity of the recovery process deteriorates
Solution Approach 1:
The invention uses a composite ionic compound consisting of an ionic liquid and a metal organic framework (MOF). The ionic liquid component provides high metal ion adsorption capacity, while the MOF component provides magnetic properties for easy separation. This composite structure combines the advantages of both materials to achieve efficient metal ion recovery with simplified processing.
Solution Approach 2:
The magnetic nanoparticle core acts as an intermediary carrier that enables easy separation of the ionic liquid-MOF composite from the solution. By incorporating magnetic properties into the composite structure, the invention introduces a magnetic field as an intermediary force for separation, replacing complex filtration or centrifugation processes.
2Quantity of substance
If conventional metal recovery methods are employed, then the recovery cost increases, but the economic feasibility of the recovery process deteriorates
Solution Approach 1:
The invention changes the physical and chemical parameters of the recovery system by using ionic liquids with specific cations (e.g., imidazolium, pyridinium) and anions (e.g., PF6-, BF4-, ClO4-) that have high affinity for metal ions. The MOF structure parameters (pore size, surface area, functional groups) are also optimized to enhance metal ion adsorption capacity and selectivity, thereby improving recovery efficiency and reducing costs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The complex ionic compound simplifies the recovery process of metal ions, reduces recovery costs, and enables efficient separation and purification of these metals, thereby addressing environmental and sustainability concerns.
Implementation Method 1
the adsorbent in the complex ionic compound of the disclosure adsorbs the metal ions and thus may be used in separation and extraction of the metal ions
Implementation Method 2
temperature inside the reactor being from 400° C. to 800° C. to reduce the carbon dioxide into carbon and to enable the carbon to be adsorbed on a Ni atom
Data Source
AI summary
A complex ionic compound includes a carrier, a bridging agent, and an adsorbent. The bridging agent is grafted to the carrier, and the adsorbent is grafted to the bridging agent.