Biochar Pellets with Bentonite and Nanocrystalline Cellulose Binders
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Solution Overview
Problem
Biochar products are prone to dustiness and low bulk density, leading to hazardous handling and separation issues during distribution, and are not suitable for use as polishing agents in biodiesel due to particle size and contamination concerns.
Innovation Solution
The production of biochar pellets using additives such as bentonite clay, nanocrystalline cellulose, polyvinyl acetate, and sodium borate, which are processed into dense, durable pellets that can absorb contaminants from biodiesel, utilizing a pelletizer device and controlled drying to achieve desired properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If biochar is used in conventional agricultural equipment for distribution, then it can be distributed on soil, but hazardous dust is created and product is lost
Solution Approach 1:
The patent applies a coating layer (flexible shell) around biochar particles to contain the friable material. This coating prevents dust generation during handling and distribution while maintaining the distribution capability through conventional agricultural equipment. The coating acts as a protective barrier that eliminates hazardous dust without sacrificing operational ease.
2Strength
If biochar particles are protected with ceramic coating, then product breakdown is minimized and bulk density increases, but sintering at high temperature forms undesirable by-products
Solution Approach 1:
The patent changes the processing parameters by using low-temperature binding methods instead of high-temperature sintering. The biochar particles are bound together at lower temperatures using binding agents, which achieves the desired strength and durability without forming undesirable by-products associated with high-temperature ceramic sintering.
3Quantity of substance
If un-pelleted biochar is used to absorb liquid contaminants, then absorption capability is achieved, but dust and small particles contaminate the biodiesel
Solution Approach 1:
The patent segments the biochar into controlled pellets of specific size ranges (0.5-5mm). This segmentation allows the biochar to maintain its absorption capability while preventing dust and fine particles from contaminating the biodiesel. The pelleted form provides controlled particle size that can be easily filtered or settled, eliminating the contamination problem while preserving the quantity-based absorption function.
4Object-generated harmful factors
If biochar is densified into pellets, then dustiness is reduced and handling is improved, but the product must be robust and non-dusty for polishing application
Solution Approach 1:
The patent creates composite pellets by combining biochar particles with binding agents. This composite material approach reduces dustiness by binding fine particles together into robust pellets while maintaining the necessary strength for polishing applications. The composite structure provides both the dust reduction benefit and the structural robustness required for handling and polishing use.
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 resulting biochar pellets are non-dusty, dense, and effective in absorbing moisture and glycerol from biodiesel, providing a stable and environmentally friendly polishing agent for the biodiesel industry.
Implementation Method 1
The method includes producing a mixture with biochar and additives... The mixture is then processed in a pelletizer device. While processing, the surface of the mixture is sprayed with a liquid.
Implementation Method 2
Once turned into pellets by way of the pelletizer device, the resulting pellets are then dried by applying heat to the pellets.
Implementation Method 3
The resulting biochar pellets are non-dusty, dense, and effective in absorbing moisture and glycerol from biodiesel
Data Source
AI summary
A method for producing charcoal particles or pellets which use different additives as binders for the biochar pellets. The method includes producing a mixture with charcoal and additives selected from nanocrystalline cellulose, nanocrystalline fibrils, bentonite, and polyvinyl acetate. The mixture is created by mixing one or more of the additives with charcoal or bentonite. The mixture is then processed in a pelletizer device. While processing, the surface of the mixture is sprayed with a liquid. Once turned into pellets by way of the pelletizer device, the resulting pellets are then dried by applying heat to the pellets. The liquid can be water or a solution of water and sodium borate.