tuaj yeem faib cov khoom colloid sib cais hauv lub centrifuge
Cov khoom me me uas tawg ua tej daim me me puas tuaj yeem sib cais hauv lub tshuab Centrifuge?
Kev Taw Qhia:
Cov colloids yog ib hom khoom tshwj xeeb uas cov khoom me me tau sib kis thoob plaws hauv ib qho chaw, tsim kom muaj kev sib xyaw ruaj khov. Piv txwv ntawm cov colloids suav nrog gelatin, mis nyuj, thiab whipped cream. Kev sib cais cov khoom me me uas tau sib kis los ntawm cov chaw tuaj yeem nyuaj vim lawv qhov me me thiab kev faib tawm sib npaug. Hauv tsab xov xwm no, peb tshawb nrhiav seb centrifugation puas tuaj yeem sib cais cov khoom me me uas tau sib kis thiab tham txog nws cov kev txwv thiab cov ntawv thov.
To taub cov khoom Colloid:
Cov khoom me me (colloid particles) muaj ntau qhov loj me txij li nanometers mus txog micrometers. Lawv nyob hauv ib qho chaw sib cais, tswj kom muaj kev sib npaug ruaj khov vim yog lub zog nyiam thiab lub zog tsis kam ua haujlwm ntawm lawv. Cov zog no tiv thaiv cov khoom me me kom tsis txhob poob rau hauv av ntuj. Txawm hais tias lub ntiajteb txawj nqus tuaj yeem ua rau muaj kev sib cais ib nrab dhau sijhawm, nws yuav tsis siv tau rau cov txheej txheem hauv kev lag luam uas lub sijhawm yog qhov tseem ceeb.
Lub luag haujlwm ntawm lub Centrifuge:
Lub centrifuge yog ib lub tshuab kuaj mob uas siv lub zog centrifugal los cais cov khoom me me raws li lawv qhov loj me, cov duab, thiab qhov ceev. Los ntawm kev tig ntawm qhov ceev ceev, lub centrifuge ua piv txwv lub zog gravitational muaj zog dua li lub ntiajteb txawj nqus ntawm lub ntiaj teb, ua rau muaj kev sib cais cov khoom me me sai. Tab sis lub centrifuge puas tuaj yeem sib cais cov khoom me me uas tawg ua tej daim me me tau zoo?
Lub Tshuab Centrifugation
Thaum muab cov khoom sib xyaw ua ke (colloid mixture) tso rau hauv lub tshuab centrifuge, nws pib tig sai sai. Lub zog centrifugal ua haujlwm radially sab nraud thiab tsim kom muaj qhov sib txawv ntawm qhov siab hauv cov khoom sib xyaw. Qhov kev sib txawv ntawm qhov siab no thawb cov khoom tawg mus rau ntug sab nraud ntawm lub raj centrifuge, ua rau muaj kev sib xyaw ua ke. Qhov sib txawv ntawm qhov ceev tau tsim nyob rau hauv cov qauv, ua rau cov khoom loj dua poob sai dua li cov khoom me dua.
Cov Kev Txwv ntawm Centrifugation
Txawm hais tias centrifugation yog ib txoj kev muaj zog rau kev sib cais cov khoom me me, nws muaj nws cov kev txwv thaum nws los txog rau cov khoom me me uas tau tawg. Qhov teeb meem tseem ceeb yog qhov me me ntawm cov khoom me me no. Vim lawv qhov me me, Brownian kev txav mus los ua qhov tseem ceeb, ua rau cov khoom me me nyob twj ywm ntev dua thiab txo qhov ua tau zoo ntawm kev tso dej tawm. Tsis tas li ntawd, cov nqi electrostatic ntawm cov khoom me me tuaj yeem cuam tshuam kev sib sau ua ke thiab kev poob.
Kev Kov Yeej Cov Kev Sib Tw
Yuav kom kov yeej cov teeb meem uas cuam tshuam nrog kev sib cais cov khoom me me uas tawg ua tej daim me me, cov kws tshawb fawb tau tshawb nrhiav ntau yam kev hloov pauv rau cov txheej txheem centrifugation ib txwm muaj. Ib txoj hauv kev suav nrog kev ntxiv cov coagulants lossis flocculants los txhawb kev sib sau ua ke ntawm cov khoom me me, txhim kho cov txheej txheem sedimentation. Lwm txoj hauv kev yog kev siv ultracentrifugation, siv cov kev ceev dua thiab cov qauv rotor siab heev los tsim cov zog centrifugal muaj zog dua.
Cov Txuj Ci Centrifugation Zoo Dua
Ntxiv rau cov tshuaj coagulants thiab ultracentrifugation, cov kws tshawb fawb tau tsim lwm txoj hauv kev los txhim kho kev sib cais ntawm cov khoom me me uas tau tawg ua tej daim me me. Piv txwv li, cov khoom siv Microfluidic siv cov microchannels thiab centrifugal forces los pab txhawb cov txheej txheem sib cais cov khoom me me. Cov channels uas tau tsim tshwj xeeb tsim cov dej ntws laminar, cais cov khoom me me ntawm cov khoom nruab nrab kom zoo dua.
Cov Ntawv Thov Kev Lag Luam
Kev siv centrifugation ua lub luag haujlwm tseem ceeb hauv ntau yam kev siv hauv kev lag luam. Hauv kev lag luam khoom noj thiab dej haus, nws pab cais cov khoom tsis huv lossis cov khoom khov tawm ntawm cov kua, ua kom cov khoom zoo dua. Cov tuam txhab tshuaj siv centrifugation los ntxuav thiab cais cov khoom xav tau thaum lub sijhawm tsim tshuaj. Ntxiv mus, cov chaw kho dej khib nyiab siv centrifuges los tshem tawm cov khoom khov thiab lwm yam kuab paug ntawm dej, pab txhawb rau ib puag ncig huv dua.
Xaus lus:
Txawm hais tias cov khoom me me uas tawg ua rau muaj kev cov nyom rau kev centrifugation, cov kws tshawb fawb tau ua tiav ntau yam hauv kev tsim cov txheej txheem los txhim kho lawv txoj kev sib cais. Kev hloov kho cov centrifuges ib txwm muaj, kev siv cov tshuaj coagulants, thiab kev tshawb nrhiav cov khoom siv microfluidic tsuas yog ob peb yam piv txwv ntawm kev nce qib uas tau ua. Los ntawm kev nkag siab txog cov kev txwv thiab kev tshawb nrhiav cov tswv yim tshiab, cov kws tshawb fawb tuaj yeem qhib tag nrho lub peev xwm ntawm centrifugation rau kev sib cais cov khoom me me uas tawg ua tej daim me me, hloov pauv ntau yam kev lag luam hauv cov txheej txheem.
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