Biomass Processing via Sonication and Organic Acids
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Solution Overview
Problem
Current methods for separating lignin from biomass materials are inefficient, energy-intensive, and environmentally detrimental due to high energy consumption, waste production, and difficulties in solvent recovery and separation.
Innovation Solution
A sonication-based process using an aqueous solvent system with a water-miscible and water-immiscible solvent, along with an organic acid, subjected to ultrasonic waves to separate lignin, hemicellulose, and cellulose at low temperatures and low energy consumption, facilitating the extraction of lignin into the organic phase and hemicellulose and sugars into the aqueous phase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional chemical pre-treatment methods using inorganic chemicals or organic solvents are used to separate lignin from biomass, then lignin separation is achieved, but the process becomes expensive and creates environmental problems due to difficulty in recovering or destroying the chemicals
Solution Approach 1:
The patent changes the chemical parameters by using food-grade organic acids (acetic, formic, propionic, butyric acid) instead of conventional inorganic chemicals. This substitution maintains effective lignin separation while eliminating the environmental harm associated with toxic chemical waste, directly resolving the contradiction between separation efficiency and environmental impact
Solution Approach 2:
The patent employs readily available, biodegradable organic acids that can be easily disposed of or recycled without complex recovery systems. These acids are cheaper than conventional chemicals and do not require expensive destruction or recovery infrastructure, thus reducing both cost and environmental harm while maintaining separation effectiveness
2Measurement precision
If organic solvents are used to dissolve lignin from lignocellulosic material, then lignin separation is achieved, but the process becomes expensive and requires costly recovery or disposal systems
Solution Approach 1:
The patent changes the solvent parameters by using food-grade organic acids with favorable solubility characteristics. These acids effectively dissolve lignin at moderate concentrations without requiring the expensive recovery systems needed for conventional organic solvents, thus reducing process cost and complexity while maintaining separation efficiency
Solution Approach 2:
The patent enables easy recovery or safe disposal of the organic acid solvent. The aqueous acid solution can be evaporated to recover acid for reuse, or the spent solution can be safely disposed of through evaporation or biological treatment, eliminating the need for costly recovery infrastructure required by conventional organic solvents
3Measurement precision
If combinations of acids and alcohols in aqueous environment are used for lignin separation, then lignin dissolution is achieved, but excess water is detrimental and high acid concentrations require costly recovery systems
Solution Approach 1:
The patent optimizes the acid concentration parameters to achieve effective lignin dissolution without excessive water content. By using food-grade organic acids at controlled concentrations, the process minimizes the energy required for water evaporation and acid recovery, directly addressing the energy consumption issue while maintaining dissolution efficiency
4Measurement precision
If high energy consumption processes are used for biomass separation, then separation efficiency is improved, but environmental impact and operating costs increase
Solution Approach 1:
The patent changes the process parameters by using mild heating conditions combined with food-grade organic acids to achieve effective lignin separation. This approach maintains high separation efficiency while significantly reducing energy consumption compared to high-temperature conventional processes, thus resolving the contradiction between efficiency and energy loss
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 process achieves efficient separation of biomass components with reduced energy use, minimal waste, and high recyclability of materials, improving the yield and purity of lignin, hemicellulose, and cellulose while reducing the environmental impact.
Implementation Method 1
subjected to ultrasonic waves
Implementation Method 2
use of sonication provides a clean and energy efficient and low temperature process for the separation of biomass material
Implementation Method 3
lignin present in the biomass, e.g. wood, is extracted into the aqueous phase
Data Source
Figure 1
AI summary
There is described a method of processing biomass which comprises the digestion of biomass material in an aqueous solvent system subjected to ultrasonic waves and separating the biomass into its constituents of lignin, hemicellulose and cellulose. There is also described a system for the processing of biomass which comprises the digestion of biomass material in an aqueous solvent system subjected to ultrasonic waves and separating the biomass into ins constituents of lignin, hemicellulose and cellulose.