Plant Wax Extraction via Mechanical and Enzymatic Separation
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Solution Overview
Problem
Current methods for extracting wax from agricultural plants and bio-waste are inefficient and costly, with limited commercial production due to the reliance on organic solvents and competition from the petrochemical industry, failing to meet the demand for high-volume, low-cost natural wax alternatives.
Innovation Solution
A process involving mechanical dry-treatment of plant fines to separate wax from fibers, followed by an aqueous treatment with enzymes to degrade proteins associated with the wax, allowing for the liquefaction and separation of wax without the use of organic solvents, resulting in a high recovery rate of wax from plant feedstock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If organic solvents are used for wax extraction from plants, then extraction efficiency is improved, but production cost increases and environmental impact worsens
Solution Approach 1:
The invention extracts wax from plant material using a two-stage process: first mechanical separation to remove bulk wax, then aqueous enzymatic treatment to remove remaining wax and proteins. This replaces organic solvent extraction with environmentally friendly water-based methods, reducing costs and environmental impact while maintaining high extraction efficiency.
Solution Approach 2:
The invention changes the extraction parameters by using aqueous solutions with controlled pH (adjusted to enzyme optimal ranges) and temperature (heating to 60-80°C for enzyme activity and wax liquefaction) instead of organic solvents. This parameter transformation enables effective wax extraction without the drawbacks of traditional solvent-based methods.
2Ease of manufacture
If mechanical dry-treatment is used to separate wax from fibers, then production cost is reduced, but wax recovery rate is limited
Solution Approach 1:
The invention merges mechanical separation with aqueous enzymatic treatment in a sequential two-stage process. The mechanical step provides initial separation at low cost, while the subsequent aqueous enzymatic step recovers additional wax and removes proteins, achieving both cost-effectiveness and high recovery rates (>50% of total wax content).
Solution Approach 2:
The invention introduces water-based enzyme solutions as an intermediary medium between mechanical separation and final wax recovery. The enzymes (proteases, cellulases, hemicellulases) act as biological catalysts that degrade proteins and plant matrix components, releasing bound wax for recovery without requiring organic solvents.
3Manufacturing precision
If enzymes are added to degrade proteins associated with wax, then wax separation quality is improved, but process complexity increases
Solution Approach 1:
The invention replaces complex mechanical separation systems with biochemical enzymes for protein degradation. Instead of using sophisticated equipment to physically separate protein-wax complexes, the process uses enzymatic hydrolysis to break down proteins, naturally releasing wax for separation through simple filtration or decantation, thereby improving quality while managing complexity.
Solution Approach 2:
The aqueous enzyme treatment serves multiple functions simultaneously: it degrades proteins associated with wax, hydrolyzes plant cell wall components (cellulose and hemicellulose), and facilitates wax release and separation. This multi-functionality achieves high separation quality without proportionally increasing process complexity.
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
This method effectively recovers more than 50% of the wax present in the feedstock, reducing costs and environmental impact while providing a sustainable source of natural wax for various applications.
Implementation Method 1
adding one or more enzymes to the mixture and adjusting the temperature and pH to optimize the activity of the enzyme(s) added, the enzyme(s) being suitable for degrading proteins associated with the wax in the sample of plant fines
Implementation Method 2
heating the enzyme-treated mixture to a temperature whereby the wax is liquefied and the enzyme(s) inactivated
Implementation Method 3
separating the wax from the mixture
Data Source
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AI summary
The invention concerns plant wax extracts and a method for extracting wax from plants, such as agricultural biowaste and in particular from cereal straw, including a first dry mechanical treatment step to separate a wax enriched fraction from a straw fraction low in wax and a second wet step including enzymatic treatment of the wax enriched fraction.