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The NMP waste solvents generated in the production process of the polyphenylene sulfide industry, aramid industry and lithium battery industry can all be recycled to improve economic benefits. Solvent extraction has become a recognized effective way to recycle NMP waste…
Solvent extraction is widely used in hydrometallurgy copper, but traditional copper smelting plant have serious problems of messiness and environmental pollution, which restrict the modern development of the smelting industry. In response to these problems, Zhengzhou Tiei Extraction Technology Co.,…
At present, the extraction method of amino acids is mainly conventional liquid-liquid extraction. Liquid-liquid extraction method is a separation method that adds a selected solvent that is immiscible (or slightly miscible) with the liquid mixture, and uses the different solubility…
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,…
Water washing, alkali washing, acid washing are very common in the chemical production process. The purpose is to remove inorganic salts from organic matter by adding water. Most of this process section at home and abroad is completed by batch…
Para-aminobenzoic acid is widely used as an important organic chemical intermediate. However, a large amount of para-aminobenzoic acid sewage is discharged during the production process. Its high toxicity and poor biodegradability have become the focus and difficulty of water pollution…
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