Vim tias qee cov khoom khov tsis yaj hauv dej, thaum ib lossis ntau cov khoom khov no muaj ntau hauv cov kua dej thiab raug cuam tshuam los ntawm hydraulic lossis sab nraud, lawv tuaj yeem nyob hauv lub xeev emulsification hauv dej, tsim cov emulsion. Hauv kev xav, lub kaw lus zoo li no tsis ruaj khov. Txawm li cas los xij, thaum muaj surfactants (xws li cov av me me), qhov emulsification ua rau hnyav, ua rau nws nyuaj rau ob theem sib cais. Qhov no feem ntau pom hauv cov roj-dej sib xyaw thaum lub sijhawm sib cais roj-dej thiab hauv cov dej-roj sib xyaw hauv kev kho dej khib nyiab, qhov twg cov qauv dej-hauv-roj lossis roj-hauv-dej ruaj khov tsim ntawm ob theem. Lub hauv paus kev xav rau qhov xwm txheej no yog "ob txheej qauv."
Hauv cov xwm txheej zoo li no, qee cov tshuaj lom neeg raug tsim los cuam tshuam cov qauv ob txheej ruaj khov thiab ua rau lub kaw lus emulsified tsis ruaj khov, yog li ua tiav kev sib cais ntawm ob theem. Cov neeg sawv cev no, siv tshwj xeeb los rhuav tshem cov emulsions, hu ua demulsifiers.
Ib qho demulsifier yog ib yam khoom ua haujlwm saum npoo uas cuam tshuam cov qauv ntawm cov kua emulsified, yog li cais cov theem sib txawv hauv cov emulsion. Cov roj nyoos demulsification hais txog cov txheej txheem ntawm kev siv cov tshuaj demulsifiers 'chemical action los cais cov roj thiab dej ntawm cov roj-dej emulsified sib tov, ua tiav qhov dehydration ntawm cov roj nyoos kom tau raws li cov dej uas xav tau rau kev thauj mus los.
Ib txoj kev zoo thiab yooj yim rau kev sib cais cov organic thiab cov dej yog kev siv cov demulsifiers los tshem tawm emulsification thiab cuam tshuam kev tsim ntawm lub interface emulsification muaj zog txaus, yog li ua tiav kev sib cais theem. Txawm li cas los xij, cov demulsifiers sib txawv hauv lawv lub peev xwm los demulsify cov organic theem, thiab lawv cov kev ua tau zoo cuam tshuam ncaj qha rau qhov ua tau zoo ntawm kev sib cais theem.
Hauv kev tsim cov tshuaj penicillin, ib kauj ruam tseem ceeb yog rho cov tshuaj penicillin tawm ntawm cov kua fermentation siv cov organic solvent (xws li butyl acetate). Vim muaj cov tshuaj sib xyaw ua ke hauv cov kua fermentation.—xws li cov protein, suab thaj, thiab mycelia—Qhov sib tshuam ntawm cov organic thiab cov dej theem ua tsis meej, tsim ib cheeb tsam ntawm nruab nrab emulsification, uas cuam tshuam loj heev rau cov khoom kawg. Txhawm rau daws qhov no, demulsifiers yuav tsum tau siv los rhuav tshem cov emulsion, tshem tawm cov emulsified lub xeev, thiab ua tiav kev sib cais theem sai thiab zoo.
Lub sijhawm tshaj tawm: Lub Kaum Hli-24-2025