Series Bioreactor Biostimulant Production for Nitrogen Use Efficiency
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Solution Overview
Problem
There is a need for plant growth promoting biostimulant compositions that utilize abundant and available organic feedstocks to enhance crop growth and reduce the environmental impact of synthetic fertilizers.
Innovation Solution
A bioreactor system is used to cultivate a specific microbial strain, maintaining its concentration at 80% throughout a 5-day process, producing a biostimulant composition that promotes nitrogen use efficiency in plants by fixing nitrogen, recruiting nitrogen fixers, and increasing organic nitrogen content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If synthetic fertilizers are used to enhance crop growth, then plant growth is improved, but environmental impact increases
Solution Approach 1:
The patent uses readily available organic feedstocks (agricultural residues, manure, food waste) as temporary, biodegradable inputs that decompose naturally in the bioreactor system, eliminating the need for persistent synthetic chemical fertilizers and reducing long-term environmental accumulation of harmful substances
Solution Approach 2:
The patent transforms organic nitrogen compounds into biologically active forms (ammonium, nitrate, organic acids) through controlled microbial degradation, changing the chemical parameters of nitrogen availability to match plant needs while using renewable organic sources instead of synthetic fertilizers
2Object-affected harmful factors
If organic feedstocks are used in bioreactor systems, then environmental impact is reduced, but production time increases
Solution Approach 1:
The patent pre-establishes specific microbial consortia in the bioreactor before introducing organic feedstock, so that degradation processes begin immediately without lag time, and the microbial population is already optimized for rapid breakdown of the specific organic material being processed
Solution Approach 2:
The patent maintains continuous microbial activity through controlled aeration, temperature, and feedstock addition, ensuring that organic matter is constantly being degraded rather than allowing batch processing with idle periods, thus accelerating the transformation timeline while maintaining environmental benefits
3Productivity
If microbial consortia are introduced into the bioreactor, then nitrogen use efficiency is improved, but control of microbial population becomes more complex
Solution Approach 1:
The patent divides the microbial population into functional groups (nitrogen-fixing bacteria, nitrifying bacteria, organic matter decomposers) with specific roles, allowing each segment to be optimized for particular tasks while working together synergistically, making the complex microbial system more manageable through functional segmentation
Solution Approach 2:
The patent monitors parameters such as pH, dissolved oxygen, ammonia concentration, and carbon dioxide production to indirectly track microbial activity and adjust aeration, feeding rates, and temperature to maintain optimal conditions for the microbial consortia, using feedback control to simplify the management of complex biological processes
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 biostimulant composition effectively enhances plant growth in nitrogen-poor conditions, increasing nitrogen use efficiency and promoting phosphate solubilization, while reducing reliance on synthetic fertilizers.
Implementation Method 1
the first nitrogen use efficiency-promoting microbial strain is one that performs nitrogen fixation
Implementation Method 2
increases organic nitrogen content and/or mineralization of organic nitrogen in soil
Data Source
AI summary
The present disclosure provides methods and systems for production of biostimulants that promote nitrogen use efficiency in plants. Embodiments described include methods of making a biostimulant composition in a bioreactor system that includes two or more containers arranged in series. The bioreactor system may include an established population of a nitrogen use efficiency-promoting microbial strain. The method may include operating the bioreactor system by transferring into the system an aqueous feedstock that comprises a microbial consortium, transferring working fluid between containers of the system, and collecting a product. The method may further include maintaining a concentration of a nitrogen use efficiency-promoting microbial strain in the system.


