2G-Bioethanol Waste Lignin Bitumen Composition for Storage Stability
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Solution Overview
Problem
Existing bitumen modification technologies do not effectively utilize 2G-bioethanol industry waste lignin for bulk utilization, leading to storage stability and elastic properties issues, and lack sustainability and circular economy benefits.
Innovation Solution
A 2G-bioethanol industry waste modified bitumen composition comprising bitumen, 2G-bioethanol industry waste lignin, an elasticity modifying agent, and a reactive component, which includes a process of heating bitumen, adding lignin and modifying agents to enhance storage stability and elastic properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If 2G-bioethanol industry waste lignin is used to modify bitumen, then cost reduction and sustainability are achieved, but storage stability deteriorates
Solution Approach 1:
A compatibilizer is introduced as an intermediary substance to mediate between the hydrophilic lignin and hydrophobic bitumen. The compatibilizer has both polar and non-polar groups that can interact with both materials, enabling stable integration of lignin into the bitumen matrix and preventing phase separation during storage.
Solution Approach 2:
The chemical structure of lignin is modified through oxidation or acylation to change its parameters. Oxidation introduces carbonyl and carboxyl groups that enhance polarity and interaction with bitumen, while acylation reduces lignin's hydrophilicity. These parameter changes improve compatibility and storage stability.
2Object-generated harmful factors
If waste lignin is incorporated into bitumen, then environmental benefits and cost reduction are achieved, but elastic properties deteriorate
Solution Approach 1:
The modification system creates a composite material comprising bitumen, lignin, and elasticity-modifying agents such as SBS or crumb rubber. This composite structure combines the environmental benefits of waste lignin with the elastic properties of the additional modifiers, achieving both sustainability and mechanical performance.
Solution Approach 2:
Different regions of the modified bitumen exhibit different properties: the lignin-rich regions provide stability and oxidation resistance, while the elasticity-modifying agent regions provide flexible and elastic characteristics. This local differentiation allows the material to simultaneously achieve storage stability and elastic properties.
3Quantity of substance
If lignin is added to bitumen without proper modification, then waste utilization is improved, but compatibility and homogeneity deteriorate
Solution Approach 1:
The chemical parameters of lignin are changed through oxidation (introducing polar groups) or acylation (reducing polarity). These parameter changes adjust lignin's hydrophilicity to match bitumen's hydrophobic character, improving compatibility and preventing phase separation.
Solution Approach 2:
A compatibilizer acts as a mediator with dual affinity - polar groups that interact with lignin and non-polar groups that interact with bitumen. This intermediary enables homogeneous distribution and stable integration of lignin throughout the bitumen matrix.
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 composition achieves storage stability and improved elastic properties, reducing costs and emissions, promoting sustainability through circular economy by utilizing waste lignin, and enhancing the performance of bitumen in road pavement, roofing, and waterproofing applications.
Implementation Method 1
The chemistry of bitumen is very complex. The properties of bitumen depend upon the crude oil sources and the refinery processes.
Implementation Method 2
Bitumen is a solid at ambient temperature and softens when heated, turning gradually into a viscous liquid.
Implementation Method 3
There are different modifiers or additives have been used to improve the performance of bitumen including polymers, chemical modifiers, extenders, oxidants/antioxidants and anti-stripping additives.
Data Source
AI summary
The present invention relates to a 2G-bioethanol industry waste modified bitumen composition comprising bitumen or asphalt binder or a petroleum vacuum residue, 2G-bioethanol industry waste lignin, an elasticity modifying agent, and a reactive component. The 2G-bioethanol industry waste modified bitumen composition is storage stable and having different applications like road pavement, roofing, adhesive, waterproofing etc. The present invention also provides a process of preparation of 2G-bioethanol industry waste modified bitumen composition comprising reactive component(s), elasticity modifying agent(s) and 2G bioethanol industry waste lignin.