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New technology: solvent extraction for directional separation of organic acids in biological fermentation broth

As "white plastic" increasingly pollutes the environment, the implementation of the global plastic ban has not only become an official mandatory measure, but also a voice for consumers to pursue health. The promotion of biodegradable materials such as PLA, PBS, PBAT, etc. has entered the stage of large-scale industrialization. The production of these degradable plastics mainly relies on the extraction of organic acids such as lactic acid, succinic acid, and adipic acid. Therefore, how to efficiently and directionally extract and separate organic acids in biological fermentation broth and ensure high-quality supply of raw materials for biodegradable materials has become an urgent problem for production companies to overcome.

Solvent extraction technology, also known as liquid-liquid separation technology, is a separation technology used to extract, separate and enrich useful substances in aqueous solutions. This technology utilizes the difference in distribution of solutes between two immiscible liquid phases to achieve the goals of separation and enrichment. First, in the early 20th century, solvent extraction technology was successfully applied to the extraction of aromatic hydrocarbons in the petroleum industry; it was subsequently used for the extraction and purification of vegetable oils, such as penicillin. Since the 1960s, the application fields of solvent extraction technology have continued to expand, not only involving traditional industrial fields such as petroleum, chemical industry, hydrometallurgy, atomic energy, and medicine, but also being widely used in high-tech and environmentally friendly fields such as bioengineering and new materials. . As a technology that has experienced long-term development, solvent extraction technology is considered a "mature" technology.

Zhengzhou TIEI Extraction Technology Co., Ltd. cooperated with the team of Professor Wei Qifeng of Harbin Institute of Technology (Weihai) to conduct research on the directional extraction and separation of organic acids in biological fermentation broth, and achieved a series of research results. Solvent extraction, separation and purification technology provides an advanced, efficient and economical process method for the organic acid industry, which not only achieves comprehensive utilization of resources and environmental protection, but also brings considerable economic value. This technology has the following advantages:

1. High quality and high efficiency: High concentration and high purity organic acid solutions can be easily obtained to meet the diverse needs of the market.
2. Strong adaptability: suitable for different raw materials and different concentrations of fermentation broth.
3. Strong processing capacity: Compared with other technologies, with similar equipment investment conditions, solvent extraction technology has greater processing capacity.
4. Reduce emissions: effectively avoid the generation of a large amount of waste residue, waste acid and waste alkali.
5. Small investment scale: Under the same production scale, solvent extraction technology requires smaller investment and occupies less equipment volume and floor space.
6. Good economic benefits: high yield, low operating costs and a small amount of environmental protection expenses.