Solid-Supported Trithiol Compounds for Heavy Metal Removal
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Solution Overview
Problem
There is a need for effective chemical compounds and methods to efficiently remove heavy metals from solution streams, such as industrial process waters and mining effluents, as existing technologies are inadequate for safely and efficiently addressing environmental and health concerns posed by these contaminants.
Innovation Solution
Solid-supported trithiol compounds, specifically those with the formula (I) where R is a linker moiety and X is a solid support, are used to bind with heavy metals, and these compounds are integrated into filtration systems and batch processes to remove heavy metals from solutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional chemical compounds are used to remove heavy metals from solution, then heavy metal removal capability is achieved, but the compounds lack stability and cannot be reused
Solution Approach 1:
The patent employs a solid support matrix (such as porous polymer beads, activated carbon, or silica) that provides a stable framework. The trithiol compounds are attached to this solid support, creating a stable structure that maintains its integrity and can be reused multiple times for heavy metal removal, directly addressing the stability and reusability issues of conventional soluble compounds
Solution Approach 2:
The invention creates a composite material system combining solid support matrix with trithiol functional groups. This composite structure integrates the stability of the solid support with the heavy metal binding capability of the trithiol compounds, enabling both high reliability and extended duration of action through multiple reuse cycles
2Reliability
If solid-supported trithiol compounds are used, then compound stability and reusability are improved, but the complexity of preparing and integrating these compounds increases
Solution Approach 1:
The solid support matrix is pre-functionalized with reactive groups (such as halides, hydroxyls, or carboxyls) before the trithiol compounds are attached. This preliminary preparation simplifies the overall process by creating ready-to-react surfaces, reducing the complexity of integration while maintaining the stability benefits of the solid-supported structure
Solution Approach 2:
The solid support matrix serves multiple functions: providing structural stability, offering high surface area for compound attachment, and enabling easy filtration and reuse. This multi-functionality reduces the need for separate components, thereby simplifying the overall system despite the advanced chemistry involved
3Ease of operation
If traditional heavy metal removal methods are used, then treatment process is simple, but environmental and health concerns remain due to inadequate removal efficiency
Solution Approach 1:
The trithiol compounds are strategically positioned on the solid support matrix to create localized high-efficiency binding sites. This local concentration of active functional groups enhances heavy metal removal efficiency at the point of contact, effectively addressing toxicity concerns while maintaining operational simplicity through filtration
4Quantity of substance
If soluble trithiol compounds are used, then heavy metal binding capability is achieved, but the compounds are lost in solution and cannot be recovered
Solution Approach 1:
By anchoring the trithiol compounds to a solid support matrix, the compounds are retained in the solid phase during filtration. This prevents compound loss in the solution while maintaining high heavy metal binding capacity, as the solid-supported trithiols remain available for subsequent reuse cycles
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 solid-supported trithiol compounds effectively bind and remove heavy metals from solutions, providing a safe and efficient method for environmental remediation, with the ability to regenerate the compounds for repeated use.
Implementation Method 1
solid-supported trithiol compounds... for use in removing heavy metals from solutions... the compound binds with one or more heavy metals present in the heavy metal-containing solution
Data Source
AI summary
Solid-supported trithiol compounds are prepared. The solid-supported trithiol compounds have formula (I):in which R is a linker moiety, X is a solid support, and n≧1. The compounds of formula (I) may be incorporated into methods for removing heavy metals from solutions and into batch systems or filtration apparatus that remove heavy metals from solutions.