Chemical Decortication of Plant Biomass Using Transition Metal Catalysts
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Solution Overview
Problem
The limited supply and labor-intensive process of obtaining bast fibers from plants hinder their utilization in industrial applications, as they are often cultivated for seed production and oil extraction rather than fiber production, and current methods for decorticating these fibers are costly and inefficient.
Innovation Solution
A method involving submerging plant biomass in an aqueous decortication solution with transition metal catalysts, such as iron-based catalysts, and introducing reactive oxygen species like hydrogen peroxide to chemically interact and decorticate the biomass, separating fibers from the hurd, and repeating the process to achieve desired fiber thickness and coarseness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional mechanical decortication methods are used, then fibers can be separated from plant biomass, but the process is labor-intensive and costly
Solution Approach 1:
The patent replaces traditional mechanical decortication methods with a chemical oxidation system using transition metal catalysts (Fe, Mn, Co, Ni) and hydrogen peroxide to generate reactive oxygen species that chemically degrade the bonding between fibers and hurd, eliminating the need for labor-intensive mechanical processing
Solution Approach 2:
The patent optimizes reaction parameters including catalyst concentration (0.1-10 g/L), hydrogen peroxide dosage (1-100 mL/kg biomass), temperature (20-100°C), and reaction time (1-24 hours) to achieve efficient decortication while minimizing labor input and processing costs
2Quantity of substance
If plants are cultivated for seed production and oil extraction, then economic returns from seeds and oil are achieved, but the supply of bast fibers remains limited
Solution Approach 1:
The patent enables multi-functional utilization of the same plant biomass (e.g., hemp, flax, jute stalks) by applying the decortication method to extract bast fibers from crops traditionally grown for seeds or oil, allowing a single crop to serve multiple industrial purposes including textiles, composite materials, and paper production
Solution Approach 2:
The patent modifies cultivation and processing parameters to optimize for fiber extraction rather than seed production, including harvesting timing and processing conditions that maximize bast fiber yield and quality from the same plant material
3Manufacturing precision
If extensive preprocessing (cutting, retting, decorticating, degumming) is performed, then fiber quality is improved, but the process becomes expensive and labor-intensive
Solution Approach 1:
The patent combines multiple traditional preprocessing steps (cutting, retting, decorticating, and degumming) into a single integrated chemical oxidation process using transition metal catalysts and hydrogen peroxide, which simultaneously achieves fiber separation, purification, and quality enhancement in one operation
Solution Approach 2:
The patent replaces sequential mechanical and chemical preprocessing operations with a unified chemical oxidation system that uses reactive oxygen species generated from transition metal catalysts to achieve comprehensive fiber treatment, reducing both process complexity and operational costs
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 efficiently decorticates plant biomass, reducing costs and labor, enabling the production of versatile bast fibers suitable for various industrial uses without the need for extensive preprocessing, and can be scaled for different plant materials like Cannabis.
Implementation Method 1
the one or more catalysts interact chemically with the ROS to decorticate the plant biomass material
Implementation Method 2
introducing reactive oxygen species (ROS) into the decortication solution adjacent to the one or more catalysts during the incubation period, wherein the one or more catalysts interact chemically with the ROS to decorticate the plant biomass material
Implementation Method 3
heating the decortication solution containing the submerged plant biomass material to 85-98°C for a pre-determined incubation period
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
Embodiments of the present disclosure generally relate to materials and methods for producing a wide range of raw materials from plant biomass. In certain embodiments, the present disclosure provides materials and methods for efficient decortication of plant biomass using a thermally regulated process to generate reactive oxygen species in the presence of a catalyst. Embodiments of the present disclosure address the need for improved methods with which to obtain a wide range of raw materials from plant biomass without the need for industrial decortication machines and without producing harmful industrial waste.