Biodegradable Floating Substrates With Buoyancy Shift for Offshore Cultivation
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Solution Overview
Problem
Existing methods for cultivating marine species for carbon sequestration are labor-intensive, inefficient, and expensive, making them unsuitable for large-scale carbon sequestration applications, and often rely on non-renewable materials that contribute to environmental pollution.
Innovation Solution
The use of floating substrates formed from naturally occurring materials, which can be seeded with marine target products and deployed in offshore waters, transitioning from a buoyant to a non-buoyant configuration when a threshold biomass is reached, allowing the products to sink and sequester carbon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If known methods for cultivating marine mass are used, then cultivation can be performed, but the process becomes labor intensive, inefficient, and expensive
Solution Approach 1:
The patent employs single-use floating substrates made from biodegradable materials such as cellulose, starch, or lignin. These substrates are designed to be discarded after a single cultivation cycle, eliminating the need for labor-intensive retrieval and cleaning operations. The disposable nature of these substrates directly reduces labor costs and increases cultivation efficiency while maintaining biodegradability to avoid environmental pollution.
Solution Approach 2:
The patent utilizes changes in buoyancy parameters of the substrate as marine biomass accumulates. The substrates are initially buoyant to float on water surface for easy deployment and access, but as biomass accumulates and the substrate degrades, the buoyancy decreases causing the substrate to sink. This automatic parameter change eliminates the need for manual retrieval operations, significantly reducing labor intensity and cost while improving productivity.
2Reliability
If reusable floatation elements and multi-component assemblies are used, then cultivation can be performed, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single biodegradable substrate component. The substrate simultaneously provides floatation, biomass attachment surface, and structural support, eliminating the need for separate floatation elements, attachment mechanisms, and support structures. This consolidation reduces device complexity while maintaining reliability through the inherent properties of the biodegradable material.
Solution Approach 2:
The biodegradable substrate is designed to perform multiple functions: providing initial buoyancy for deployment, serving as an attachment surface for marine biomass, and automatically sinking when biomass accumulates. This multi-functional design eliminates the need for separate components for each function, reducing assembly complexity while ensuring reliable performance of all cultivation functions.
3Strength
If non-renewable materials are used for substrates, then structural integrity is maintained, but environmental pollution increases
Solution Approach 1:
The patent employs composite materials made from multiple biodegradable components such as cellulose, starch, and lignin. These composite materials provide sufficient structural integrity for substrate functionality while ensuring complete biodegradability. The combination of different natural materials compensates for the individual weaknesses of each component, maintaining strength requirements while eliminating environmental pollution from non-renewable materials.
Solution Approach 2:
The patent utilizes parameter changes in the biodegradable substrate over time. The substrate maintains its structural parameters (strength, integrity) during the initial cultivation phase, then gradually degrades as biomass accumulates. This time-dependent parameter change allows the substrate to provide necessary structural support when needed while automatically transitioning to a degraded state that prevents environmental pollution, eliminating the need for manual retrieval and disposal.
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 approach reduces manufacturing costs, minimizes environmental impact, and enhances carbon sequestration efficiency by utilizing renewable materials and promoting natural degradation, while enabling scalable and cost-effective carbon capture.
Implementation Method 1
a buoyancy of the substrate in the first configuration is greater than a threshold buoyancy
Implementation Method 2
a buoyancy of the substrate in the second configuration is less than the threshold buoyancy. In some instances, the threshold buoyancy is a buoyancy below which the substrate sinks to the bottom of a body of water.
Data Source
AI summary
A method of using a floating substrate for cultivating a target product includes providing a naturally occurring material, and forming the naturally occurring material into a substrate. The substrate is deployed into a body of water. The substrate can be pre-seeded with a target product and/or can be configured attract the target product present in the body of water after being deployed. The substrate is allowed to transition from a first configuration to a second configuration when an amount of biomass accumulation of the target product is at least a threshold amount of biomass accumulation. In some instances, a buoyancy of the substrate in the first configuration may be greater than a threshold buoyancy and a buoyancy of the substrate in the second configuration may be less than the threshold buoyancy, thereby allowing the substrate and the target product to sink to a bottom of the body of water.