3D Carbon-Based Copolymerization Composite for Anaerobic Digestion
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Solution Overview
Problem
Conventional anaerobic digestion technologies face challenges with slow conversion rates, low degradation stability, and poor electron transfer efficiency due to the solubility and loss of quinone redox mediators, limiting their scalability and industrial application in treating organic waste.
Innovation Solution
A three-dimensional carbon-based copolymerization composite is developed, prepared by dissolving hydroxyquinone and diamine compounds, followed by amidation with a monomer, dispersion of graphitized carbon, and polymerization, which immobilizes quinone functional groups on the carbon skeleton, enhancing electron transfer and stability within the anaerobic digestion system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If quinone redox mediators are used to promote electron transfer in anaerobic digestion, then the reaction rate and electron transfer efficiency are improved, but the quinone compounds are easily soluble in water and lost to the environment
Solution Approach 1:
The patent applies composite materials by combining quinone compounds with carbon-based materials to form a composite structure. This composite approach allows the quinone functional groups to maintain their redox activity while the carbon-based matrix provides structural stability and prevents water solubility, thereby resolving the contradiction between improving reaction rate and preventing substance loss.
2Ease of manufacture
If conventional anaerobic digestion technology is used, then the process is simple and low-cost, but the conversion rate is slow and degradation stability is poor
Solution Approach 1:
The patent introduces quinone-based redox mediators as intermediaries in the anaerobic digestion process. These mediators facilitate electron transfer between microorganisms and substrates, acting as a bridge that accelerates the degradation reaction without complicating the overall process design, thus improving conversion rate while maintaining process simplicity.
3Reliability
If quinone redox mediators are used to mediate electron transfer, then interspecies electron transfer is promoted, but the mediators are difficult to enrich in the system and show environmental loss risk
Solution Approach 1:
By forming a composite structure where quinone compounds are integrated into a carbon-based matrix, the system achieves both reliable electron transfer through the quinone functional groups and stable composition through the insoluble composite structure, preventing mediator loss and enrichment difficulties.
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 composite promotes interspecies electron transfer, increases reaction rates, and prevents loss of quinone compounds, providing a stable and efficient anaerobic digestion process with improved mechanical properties and chemical stability.
Implementation Method 1
Quinone redox mediators (QRMs) as an abiotic component could mediate electron transfer between microorganisms and between microorganisms and pollutants in the anaerobic biological transformation... QRMs depend on quinone functional groups to be converted into the form of quinone/hydroquinone during the redox to gain and lose electrons
Implementation Method 2
The three-dimensional carbon-based copolymerization composite prepared by the method according to the present disclosure is easy to be enriched in the anaerobic digestion system but not easy to be lost to the environment
Data Source
AI summary
Provided are a three-dimensional carbon-based copolymerization composite, and a preparation method and use thereof. The preparation method includes dissolving a hydroxyquinone compound and a diamine compound to obtain a dissolved system, and subjecting the dissolved system to first reaction to obtain first reaction system; mixing the first reaction system and monomer, and subjecting a resulting mixed system to amidation to obtain an amidation reaction system; subjecting a graphitized carbon to first dispersion, ball milling, and second dispersion sequentially to obtain a graphitized carbon dispersion; and mixing the amidation reaction system, the graphitized carbon dispersion, a cross-linking agent, and an initiator, and subjecting a resulting mixture to polymerization to obtain the three-dimensional carbon-based copolymerization composite, wherein a molar ratio of the diamine compound to the hydroxyquinone compound is 1:(2-3); and the monomer comprises a carboxyl group and a double bond in a structure thereof.