Copper Oxide Catalyst Hydrothermal Decomposition
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Solution Overview
Problem
Current methods for decomposing organic halogen compounds, such as those used in wastewater treatment, require high temperatures and pressures, leading to high energy consumption and facility costs, and existing catalysts do not effectively decompose these compounds at reduced temperatures or maintain catalytic activity over time.
Innovation Solution
A hydrothermal oxidation treatment method utilizing a Fenton reaction with a copper oxide catalyst, specifically copper(I) or copper(II) oxide, which reduces reaction temperatures to 200°C or less, allowing for efficient decomposition and detoxification of organic halogen compounds without the need for high-temperature facilities and extends catalyst lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-temperature combustion method or supercritical water oxidation method is used to decompose organic halogen compounds, then decomposition efficiency is improved, but energy consumption and facility cost increase significantly
Solution Approach 1:
The invention changes the reaction parameters by using subcritical water conditions (temperature below critical point) combined with Fenton reagents (hydrogen peroxide and iron catalyst) to achieve effective decomposition without requiring supercritical conditions, thereby reducing energy consumption while maintaining decomposition efficiency
Solution Approach 2:
The invention introduces hydrogen peroxide and iron ions as intermediary substances that facilitate the decomposition reaction through Fenton chemistry, generating hydroxyl radicals that effectively break down organic halogen compounds at lower temperatures without requiring high-energy supercritical conditions
2Productivity
If conventional hydrothermal oxidation method is used, then decomposition capability is achieved, but reaction temperature must be maintained at high levels increasing operational cost
Solution Approach 1:
The invention modifies the operational parameters by introducing chemical catalysts (iron ions) and oxidants (hydrogen peroxide) that enable the reaction to proceed effectively at lower temperatures, changing the mechanism from purely thermal hydrothermal oxidation to chemically-enhanced Fenton oxidation
3Productivity
If existing catalysts are used for decomposition, then catalytic activity is achieved, but catalyst lifespan is limited and activity decreases over time
Solution Approach 1:
The iron catalyst in the Fenton system undergoes cyclic reduction and oxidation (Fe2+ ↔ Fe3+), automatically regenerating its catalytic activity through the reaction mechanism itself, allowing the catalyst to maintain activity over extended periods without external regeneration processes
Solution Approach 2:
The invention recovers and regenerates the iron catalyst in situ through the Fenton reaction mechanism, where iron ions are continuously cycled between different oxidation states, effectively recovering catalytic activity that would otherwise be lost
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 method achieves nearly complete decomposition of organic halogen compounds in a short time, reduces energy consumption, simplifies device design, and maintains catalytic activity, enabling efficient treatment of wastewater with lower operational costs.
Implementation Method 1
a decomposition treatment method for an organic halogen compound, the method including heating an organic halogen compound at a temperature of from 100°C to 200°C in the presence of a catalyst formed of copper oxide and hydrogen peroxide, to subject the organic halogen compound to a hydrothermal oxidation reaction utilizing a Fenton method
Implementation Method 2
subject the organic halogen compound to a hydrothermal oxidation reaction utilizing a Fenton method
Implementation Method 3
a catalyst formed of copper oxide and hydrogen peroxide
Data Source
AI summary
Provided are a treatment method for an organic halogen compound, which allows the organic halogen compound to be efficiently decomposed without a large-scale treatment device or high operating cost, and a catalyst to be used for the treatment method. In the treatment method, an organic halogen compound is subjected to decomposition treatment by heating the organic halogen compound at a temperature of from 100° C. to 200° C. in the presence of a catalyst formed of copper oxide and hydrogen peroxide, to subject the organic halogen compound to a hydrothermal oxidation reaction utilizing a Fenton method.