Valine purification method
A purification method, valine technology, applied in chemical instruments and methods, preparation of organic compounds, ion exchange, etc., can solve problems such as low product purity, complicated methods, and expensive precipitants
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Embodiment 1
[0013] Fermentation broth 100L, valine content 40.5g / L, adjust the pH value to 4-7, slowly add the flocculant polyaluminum chloride into the fermentation broth under stirring conditions, continue to stir for 5 minutes after adding Set aside for 10-15 minutes, when the suspension condenses to form a large number of flocs and begins to settle, stir again, slowly add the coagulant aid 0.2% cationic polyacrylamide, continue to stir for 5 minutes, let stand for 2 hours, and ferment at this time The bacteria, macromolecules and other impurity molecules in the liquid condense into flocs and settle to the bottom of the fermentation liquid. The supernatant is poured out, the sediment is washed twice with water, the water is mixed with the supernatant, and diatoms are passed through. Soil pre-coated plate and frame filter press to obtain primary filtrate. Add 1% activated carbon to the primary filtrate, and keep the temperature at 60° C. and stir at 200 rpm for 1 hour, then filter to se...
Embodiment 2
[0015] Fermentation broth 300L, valine content 41g / L, adjust pH value to 4-7, under stirring condition, slowly add flocculant polyaluminum chloride into fermentation broth, after adding, continue to stir for 5 minutes, let stand After 10 to 15 minutes, when the suspension condenses to form a large number of flocs and begins to settle, stir again, slowly add the coagulant 0.2% cationic polyacrylamide, continue to stir for 5 minutes, and let it stand for 2 hours. The bacteria, macromolecules and other impurity molecules in the fermented water condense into flocs and settle to the bottom of the fermentation broth. The supernatant is poured out, the sediment is washed twice with water, the water is mixed with the supernatant, and the diatomaceous earth is passed. Pre-coated plate and frame filter press to obtain primary filtrate. Add 1% activated carbon to the primary filtrate, and keep the temperature at 60° C. and stir at 200 rpm for 1 hour, then filter to separate the activated...
Embodiment 3
[0017]Fermentation broth 1000L, valine content 40.2g / L, adjust the pH value to 4-7, under the condition of stirring, slowly add flocculant polyaluminium chloride into the fermentation broth, after adding, continue stirring for 5 minutes, static Set aside for 10-15 minutes, when the suspension condenses to form a large number of flocs and begins to settle, stir again, slowly add the coagulant aid 0.2% cationic polyacrylamide, continue to stir for 5 minutes, let stand for 2 hours, and ferment at this time The bacteria, macromolecules and other impurity molecules in the liquid condense into flocs and settle to the bottom of the fermentation liquid. The supernatant is poured out, the sediment is washed twice with water, the water is mixed with the supernatant, and diatoms are passed through. Soil pre-coated plate and frame filter press to obtain primary filtrate. Add 1% activated carbon to the primary filtrate, and keep the temperature at 60° C. and stir at 200 rpm for 1 hour, the...
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