Ocean Fertilizer Composite with Bacteria for Carbon Sequestration
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Solution Overview
Problem
Existing ocean fertilization techniques for carbon dioxide sequestration, such as iron fertilization, have shown poor results with lower-than-expected yields of phytoplankton and diatoms, and potential side effects from local overloading of fertilizers, limiting effective carbon dioxide sequestration.
Innovation Solution
A combination of iron, nitrogen, phosphorus, magnesium, and ammonia or nitrite oxidizing bacteria is used in an ocean fertilizer, with ferric EDTA, ammonium nitrate or ammonium phosphate, and magnesium chloride, along with bacteria like Nitrosomonas europaea and Nitrospina gracilis, to enhance phytoplankton growth and prevent ecosystem damage, applied strategically in specific ocean regions and times to optimize carbon sequestration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If iron fertilization is used to stimulate photosynthesis in phytoplankton, then carbon dioxide sequestration is achieved, but the yield of phytoplankton and diatoms is lower than expected
Solution Approach 1:
The patent combines multiple nutrients (iron, nitrogen, phosphorus) and adds magnesium salt and bacteria to create a composite fertilizer formulation. This merging of multiple components works synergistically to achieve higher phytoplankton yield than iron alone, while maintaining reliable carbon dioxide sequestration through enhanced biological productivity.
Solution Approach 2:
The invention uses a composite fertilizer material containing iron compound, nitrogen compound, phosphorus compound, magnesium salt, and bacteria. This composite formulation addresses the limitations of single-nutrient fertilization by providing a balanced mix of essential nutrients and biological agents that together maximize phytoplankton growth and carbon sequestration effectiveness.
2Productivity
If fertilizer is applied to increase phytoplankton growth, then carbon dioxide sequestration is enhanced, but local overloading of fertilizer causes side effects
Solution Approach 1:
The patent applies fertilizer with controlled characteristics to specific ocean regions where it can be most effective. By selecting appropriate locations and controlling the local composition and concentration of the fertilizer, the invention maximizes carbon sequestration while minimizing harmful local effects such as eutrophication and dead zone formation.
Solution Approach 2:
The inclusion of bacteria in the fertilizer formulation provides biological feedback mechanisms that regulate nutrient cycling and prevent excessive accumulation of any single nutrient. This feedback control helps maintain balanced ecosystems while achieving enhanced carbon sequestration, preventing the harmful side effects associated with uncontrolled fertilizer application.
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 significantly increases phytoplankton growth and carbon dioxide sequestration, preventing dead zones and optimizing carbon deposition on the ocean floor, with controlled application ensuring effective and sustainable carbon sequestration over decades.
Implementation Method 1
a compound containing nitrogen... and at least one of an ammonia oxidizing bacteria and a nitrite oxidizing bacteria
Implementation Method 2
a compound containing nitrogen... and at least one of an ammonia oxidizing bacteria and a nitrite oxidizing bacteria
Implementation Method 3
The marine food chain is based on photosynthesis by marine phytoplankton that combine carbon with inorganic nutrients to produce organic matter
Implementation Method 4
Some of the diatoms so formed will sink into the deeper ocean in the form of particulate organic matter
Data Source
AI summary
An ocean fertilizer for the indirect sequestration of carbon dioxide in the ocean comprises a compound containing iron, a compound containing nitrogen, a compound containing phosphorus, a magnesium salt, and at least one of an ammonia oxidizing bacteria and a nitrite oxidizing bacteria, or both types of bacteria.