Industrial Gas Fermentation Purification for Higher Protein Yield
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Solution Overview
Problem
The existing microbial fermentation method for protein production from carbon-containing industrial gases results in low protein yield due to poor bacterial growth and metabolism, with high-concentration protein wastewater leading to environmental impact and protein loss.
Innovation Solution
An industrialized protein production system comprising a raw gas purification system, water purification system, bacteria preparation system, bacteria separation system, and protein preparation system, which removes impurities and competing bacteria, ensuring optimal bacterial growth and high-quality protein production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If microbial fermentation method is used to prepare proteins from carbon-containing industrial gases, then energy consumption is reduced and efficiency is improved, but protein yield is low due to poor bacterial growth and metabolism
Solution Approach 1:
The patent applies preliminary action by implementing a water purification system that kills competing bacteria before fermentation begins. This pre-treatment of raw water ensures that only the desired bacteria can grow during fermentation, eliminating competition for nutrients and improving both bacterial growth quality and protein yield without requiring complex modifications to the fermentation process itself
Solution Approach 2:
The patent introduces an intermediary substance (purified water free of competing bacteria) that mediates between the raw materials and the fermentation process. This intermediary ensures optimal conditions for bacterial growth by removing harmful elements beforehand, thereby improving protein yield while maintaining simple fermentation conditions
2Loss of substance
If end-of-life bacteria are directly discharged, then protein loss occurs and environmental impact increases, but separation and recovery treatment is complex and costly
Solution Approach 1:
The patent converts the harmful waste stream into a beneficial resource by implementing a separation and recovery system that transforms protein-rich wastewater into valuable bacterial protein products. The system uses the high protein concentration in the waste stream as an advantage, recovering up to 30 g/L of protein that would otherwise be lost, while the environmental impact is eliminated by preventing direct discharge
Solution Approach 2:
The patent applies discarding and recovering by separating bacteria from the fermentation broth and then recovering proteins from the separated bacterial biomass. The system discards the liquid portion after protein extraction and recovers the solid bacterial protein as a valuable product, achieving both protein recovery and waste reduction through a integrated separation and processing system
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 system achieves high-quality bacterial proteins with a yield of >95% and reduces environmental impact by improving bacterial growth conditions and protein recovery, with a continuous operation time exceeding 12 months.
Implementation Method 1
a raw gas purification system for removing impurities from raw gas
Implementation Method 2
a water purification system for killing competing bacteria in raw water
Implementation Method 3
a bacteria preparation system communicated with the raw gas purification system and the water purification system and configured to obtain mash by taking the raw gas and the raw water as raw materials for fermentation
Implementation Method 4
a bacteria separation system communicated with the bacteria preparation system and configured to separate bacteria and alcohols from the mash
Data Source
AI summary
An industrialized protein production system using carbon-containing industrial gas includes a bacteria preparation system, a raw gas purification system, a water purification system, a bacteria separation system and a protein preparation system, wherein the bacteria preparation system is respectively communicated with the raw gas purification system, the water purification system and the bacteria separation system, and the protein preparation system is communicated with the bacteria separation system. By purifying the raw gas and the raw water and removing impurities from the raw gas and competing bacteria in the raw water, excellent raw materials and environment are provided for bacterial reproduction, which enable the raw gas to have high-efficiency fermentation, thereby increasing the yield of proteins.