Peptidic Metal-Binding Compounds for Heavy Metal Bioremediation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Bioremediation technologies face challenges in effectively treating heavy metals like cadmium, chromium, and mercury due to their non-decay nature and limited absorption by microorganisms, necessitating the development of novel compositions and methods for efficient binding and removal.
Innovation Solution
Development of small, peptidic compounds with metal binding moieties such as substituted imidazolone and oxazolone rings that bind to metal atoms, along with methods for producing and using these compounds in bioremediation processes, including the creation of complexes and conjugates for enhanced metal binding and reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bioremediation using microorganisms is used to treat heavy metals, then the process is less expensive than ex situ technologies, but the treatment effectiveness is limited due to poor absorption and non-decay nature of heavy metals
Solution Approach 1:
The patent combines microorganisms with synthetic chelating agents (EDTA, DTPA, EDDA) to create a composite bioremediation system. The chelating agents form stable complexes with heavy metals, enhancing the ability of microorganisms to absorb and treat metals that would otherwise be resistant to biological degradation. This composite approach maintains cost-effectiveness while significantly improving treatment reliability.
Solution Approach 2:
The patent introduces chelating agents as intermediary substances that mediate between the heavy metals and microorganisms. These chelating agents bind to heavy metals first, transforming them into forms that are more readily absorbed by microorganisms, thus facilitating the treatment process without requiring direct microorganism-metal interaction.
2Loss of substance
If heavy metals are concentrated by incineration or recycling for industrial use, then metal recovery is achieved, but the complexity of the process increases and additional environmental risks are introduced
Solution Approach 1:
The patent employs microorganisms that naturally perform metal concentration and recovery functions through their metabolic processes. The biological system self-organizes to accumulate metals in biomass, eliminating the need for complex external incineration or recycling infrastructure. The microorganisms essentially service the metal recovery function autonomously.
Solution Approach 2:
The patent extracts heavy metals from contaminated environments using microorganisms that selectively accumulate metals in their biomass. This biological extraction process simplifies the overall remediation system by directly removing metals from the environment without requiring complex industrial processing steps for concentration and recovery.
3Object-affected harmful factors
If atmospheric deposition is the dominant source of mercury, then widespread distribution occurs, but the challenge of controlling and remediating dispersed mercury contamination increases
Solution Approach 1:
The patent uses microorganisms with broad-spectrum metal binding capabilities that can address multiple heavy metals simultaneously, including mercury. These microorganisms can be deployed in various environments (soil, water, sediment) to treat dispersed contamination from atmospheric deposition, providing a universal solution that improves remediation productivity across different contaminated sites.
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 compounds effectively bind and reduce the concentration of heavy metals, facilitating their removal from contaminated systems, and can also reduce chlorinated compounds, methane, ethanol, and acetate, demonstrating versatility in bioremediation applications.
Implementation Method 1
a first metal binding moiety comprising a substituted imidazolone ring (M1), and a second metal binding moiety comprising a substituted oxazolone ring (M2), wherein M1 and M2 bind to a single metal atom
Data Source
AI summary
The present disclosures provides isolated or purified compounds, each of which bind to a metal atom. Generally, the compounds are small in size (e.g, molecular weight of less than about 1 kDa) and peptidic in nature, inasmuch as the compounds comprise amino acids. In some embodiments, the compound comprises a structure of Formula I:M1-P1-M2-P2 wherein each of P1 and P2 is a peptide comprising at least two amino acids, M1 is a first metal binding moiety comprising a substituted imidazolone ring, M2 is a second metal binding moiety comprising a substituted oxazolone ring, and wherein M1 and M2 bind to a single metal atom. Also provided are related complexes, conjugates, cells which synthesize the compounds of the present disclosures, substantially homogenous cultures thereof, kits and compositions, and methods of making or using the materials of the present disclosures.