I-Hielscher Ultrasound Technology

I-Probe-Type Sonication vs. Bath Ultrasonic: Ukuqhathaniswa Okuphumelelayo

Izinqubo ze-Sonication zingenziwa ngokusetshenziswa kwe-probe-type homogenizer ultrasonic noma ibhuloho ye-ultrasonic. Nakuba, kokubili amasu asebenzisa i-ultrasound kwisampula, kunemibono ephawulekayo ekusebenzeni, ukusebenza kahle kanye nenqubo yokusebenza.

Imiphumela oyifunayo evela ku-ultrasonication yeziphuzo – kufaka phakathi i-homogenization, Ukuhlakazeka, i-deagglomeration, Ukukhokha, emulsification, Ukukhipha, lysis, Ukuhlakazeka futhi imiphumela ye-sonochemical - kubangelwa cavitation. Ngokufaka amandla aphakeme e-ultrasound abe yi-medium medium, amagagasi omsindo adluliselwa emzimbeni futhi adala ukucindezela okuphakeme okuhlukile (ukucindezela) nokujikeleza okuphansi (ukungavamile), ngamanani kuye ngokuthi imvamisa. Ngesikhathi umjikelezo ophansi ocindezelayo, amagagasi aphakeme kakhulu e-ultrasonic enza ama-bubbles amancane avulekile noma aphuma emanzini. Lapho ama-bubbles athola umthamo lapho bengakwazi khona ukuwuthola amandla, awela phansi ngesihluku phakathi nomjikelezo ophezulu wokucindezela. Lokhu kwenzeka kuthiwa yi-cavitation. Phakathi nokushisa okuphezulu kakhulu (cishe 5,000K) kanye nezingcindezi (cishe 2,000atm) kufinyelelwe endaweni yangakini. I-implosion ye-bubble cavitation nayo ibangele ama-jets ahlanzekile angama-280m / s velocity. [Suslick 1998]

Ama-bubbles e-cavitation angahlukaniswa ngamabhulebhu azinzile nezikhathi ezithile. (Chofoza ukuze ukhulise!)

Moholkar et al. (2000) wathola ukuthi amabhubhu esifundeni esiphezulu se-cavitation ngamandla ahamba kancane, kuyilapho ama-bubbles esifundeni se-cavitation intensity ephansi kakhulu enza umfutho oqinile / oscillatory. Ukuwohloka kokuphela kwamabhulebhu okunikeza ukushisa kwendawo kanye nokucindezela maxima kungumsuka wemiphumela emibi ye-ultrasound kuma-chemical systems.
Ukuqina kwe-ultrasonication kungumsebenzi we-input input ne-surface sonotrode endaweni. Ukufakelwa kwamandla okunikeziwe okusebenzayo kusebenza: indawo enkulu ye-sonotrode, i-intensity ye-ultrasound.
Amagagasi e-ultrasound angakhiwa ngezinhlobo ezahlukene zezinhlelo ze-ultrasonic. Esikhathini esilandelayo, umehluko phakathi kwe-sonication esebenzisa ukugeza kwe-ultrasonic, idivayisi ye-ultrasonic ye-probe emkhunjini ovulekile kanye nedivayisi ye-ultrasonic ye-probe nge-flow cell cell izofaniswa.

Ukuqhathaniswa kokusabalalisa kwendawo yokushisa eshisayo

ukugeza kwe-ultrasonic

Esigumbini se-ultrasonic, i-cavitation iyenzeka engahambisani nayo futhi ingalawulwa ngokungalawuleki ngethangi. I-sonication effect wokuqina okuphansi futhi ngokungenalutho isakazeka. Ukuphindaphinda nokusabalalisa kwenqubo kubi kakhulu.
Isithombe ngezansi sibonisa imiphumela yokuhlolwa kwe-foil ku-tank ultrasonic. Ngakho-ke, i-aluminium encane noma i-tin foil ifakwe ngaphansi kwe-tank ultrasonic egcwele amanzi. Ngemuva kokubeletha, amamaki okuvuthwa angashadile abonakalayo. Lezo zindawo ezingabhekwayo nezibopho ezifakwe emaphoyiseni kubonisa izindawo ezishisayo zokushisa. Ngenxa ye amandla aphansi futhi i ukungalingani ukusatshalaliswa kwe-ultrasound ngaphakathi kwe-tank, amamaki okuguguleka okuvela kuphela ahlakaniphile. Ngakho-ke, okugeza okuphezulu kusetshenziselwa ukuhlanza izicelo.

In an ultrasonic bath or tank, the ultrasonic "hot spots" kwenzeka ngokungafani kakhulu. (Chofoza ukuze ukhulise!)
Izibalo ezingezansi zibonisa ukusabalalisa okungalingani kwamabala ashisayo emakhazeni ekugezeni kwe-ultrasonic. Esikhathini sesi-2, ibhuku lokugeza eliphansi elingama-20×10 cm isetshenzisiwe.
I-cavitation engavumelekile ekugezeni kwe-ultrasonic (Chofoza ukuze ukhulise!)

Ngokwezilinganiso eziboniswe kuFi. 3, ukugezela kwe-ultrasonic ngesithuba esiphansi se-12x10cm sisetshenzisiwe.
Lesi sibalo sibonisa ukusatshalaliswa kwendawo okungalingani kwamabala ashisayo e-ultrasonic ekugezeni kwe-ultrasonic. (Chofoza ukuze ukhulise!)
Zombili izilinganiso zembula ukuthi ukusatshalaliswa kwe-ultrasonic irradiation field emathangi ase-ultrasonic kungalingani kakhulu.
Ukutadisha kwe-ultrasonic irradiation ezindaweni ezehlukene ebhodini kubonisa ukuhlukahluka okuphawulekayo kwendawo emgodini we-cavitation ebhodini le-ultrasonic.

Umdwebo 4 ngezansi uqhathanisa ukusebenza kahle kwebhuku lokushisa i-ultrasonic kanye ne-ultrasonic probe device eboniswa ukuchithwa kwe-azo ye-Methyl Violet.
Ukusebenza okuphakeme nge-sonication-type sonication (Chofoza ukuze ukhulise!)
Dhanalakshmi et al. etholakala esifundweni sabo ucwaningo lwe-ultrasonic Amadivayisi anakho indawo ephezulu ukuphakama kuqhathaniswa nohlobo lwe-tank futhi ngenxa yalokho, umphumela omkhulu wendawo njengoba kuboniswe kumdwebo 4. Lokhu kusho ukuphakama okuphakeme kanye nokusebenza kahle kwenqubo ye-sonication.
Ukusethwa kwe-ultrasonic njengoba kukhonjiswe esithombeni 4, kuvumela ukulawula okugcwele phezu kwemingcele ebaluleke kakhulu - amplitude, ingcindezi, izinga lokushisa, i-viscosity, i-concentration, ivolumu yokuphendula.

I-Probe-Type sonication isebenza kakhulu futhi isebenza kahle ama-cvs okugeza kwe-sonicator

I-probe-type sonication nayo UP200Ht

Xhumana Nathi / Cela Ukwaziswa Olwengeziwe

Khuluma nathi mayelana nezidingo zakho zokucubungula. Sizosikisela ukusetha nokulungiswa kwemingcele efanele yephrojekthi yakho.





Sicela uqaphele wethu Inqubomgomo yobumfihlo.


Ultrasonic processing: Cavitational "hot spot"

I-Pic 1: I-ultrasonic i-sonotrode yokudlulisa amagagasi omsindo abe yi-liquid. Ukungena ngaphansi kwe-sonotrode kubonisa indawo ehehayo yendawo.

Izinzuzo Probe-Sonication:

  • kakhulu
  • kugxile
  • ukulawula ngokugcwele
  • ngisho nokusatshalaliswa
  • i-reproducible
  • ukulinganisa okulinganayo
  • i-batch ne-inthanethi

I-Ultrasonic Probe Device ku-beaker evulekile

Uma amasampuli abhalwa nge-ultrasonic idivayisi ye-probe, i-sonication enkulu ye-intanethi iphinde ibe ngaphansi kwe-sonotrode / probe. I-ultrasonic irradiation ibanga ilinganiselwe endaweni ethile yephuzu le-sonotrode. (bheka pic.1)
Izinqubo ze-Ultrasonic ezitsheni ezivulekile zisetshenziselwa ukuhlolwa okusemandleni kanye nesampula ukulungiselela amavolumu amancane.

Idivayisi ye-ultrasonic probe kumodi yokugeleza eqhubekayo

Imiphumela eyinkimbinkimbi kakhulu ye-sonication iyatholakala ngokuqhutshwa okuqhubekayo kwimodi yokugeleza evaliwe. Yonke into isetshenzwa ngokuqina okufanayo kwe-ultrasound njengoba indlela yokugeleza kanye nesikhathi sokuhlala ekamelweni le-reactor elilawulwa yi-ultrasonic lilawulwa.

Ukucubungula kwe-ultrasonic inline nge-flow cell reactor (Chofoza ukuze ukhulise!)

Khetha. 4: 1kW uhlelo lwe-ultrasonic I-UIP1000hd nge-flow cell kanye nepompo

Imiphumela yenqubo ye-ultrasonic liquid processing for a given parameter ukumiswa kukhona umsebenzi wevolumu ngayinye eguquliwe. Umsebenzi ushintsho ngokuguqulwa kwemingcele ngayinye. Ngaphezu kwalokho, ukukhishwa kwamandla kanye nokuqina kwamandla endaweni ngayinye ye-sonotrode yeyunithi ye-ultrasonic incike kwimingcele.

Imingcele ebaluleke kunazo zonke yokucubungula kwe-ultrasonic kufaka ukuphakama kwe-amplitude (A), ukucindezelwa (p), ivolumu yokuphendula (VR), izinga lokushisa (T), kanye ne-viscosity (η).

Umthelela wokucubungula wokucubungula kwe-ultrasonic kuncike ekubumbeni okuphezulu okuchazwa yi-amplitude (A), ukucindezelwa (p), ivolumu yokuphendula (VR), izinga lokushisa (T), i-viscosity (η) nezinye. Izimpawu ezihamba phambili kanye nezincane zikhombisa ithonya elihle noma elibi lepharamitha elithile ngokuqina komsindo.

Ngokulawula ipharamitha ebaluleke kakhulu yenqubo ye-sonication inqubo iphindaphinda ngokugcwele futhi imiphumela efinyelelwe ingafakwa ngokulingana ngokuphelele. Izinhlobo ezahlukene ze-sonotrodes kanye ne-ultrasonic flow flow cell reactors zivumela ukuba i-adapttion ibe nemigomo ethile.

Isifingqo

Ngisho a ukugeza kwe-ultrasonic inikeza a buthakathaka sonication nge approx. 20-40 W / L futhi kakhulu okungewona oyifomu ukusatshalaliswa, ultrasonic probe-uhlobo Amadivaysi angakwazi ukukhathanisa kalula. 20.000 W / L esimaphakathi esicutshungulwayo. Lokhu kusho ukuthi idivaysi ye-ultrasonic ye-probe ihamba phambili ebhodini le-ultrasonic ngesilinganiso se-1000 (i-1000x ephezulu yokufaka amandla kwevolumu ngevolumu) ngenxa kugxile futhi umfaniswano ultrasonic amandla input. Ukulawula okugcwele phezu kwemingcele ebaluleke kakhulu ye-sonication kuqinisekisa ngokuphindaphindiwe ngokuphelele imiphumela kanye ukusabalalisa okulinganayo yemiphumela yenqubo.

Sonication enamandla nge-probe-type ultrasonicator.

I-Pic.3: Sonication e-tube yokuhlola evulekile esebenzisa i idivayisi ye-ultrasonic lab nge-sonotrode / probe

Izincwadi / Izinkomba

 

  • I-Dhanalakshmi, i-NP; Nagarajan, R. (2011): Ultrasonic Ukuqiniswa kokuchithwa kweMikhiqizo yeMethyl Violet: Isifundo sokuhlola. Ku: Worlds Acsd. Sci. Injini Tech 2011, Vol.59, 537-542.
  • I-Kiani, i-H .; Zhang, Z. Delgado, A .; Ilanga, D.-W. (2011): I-nucleation eyayisizwa nge-ultrasound yezinye izinhlobo zokudla eziyisiketshezi kanye neziqinile ngesikhathi seqhwa. Ku: Ukudla Res. Intl. 2011, Vol.44 / No.9, 2915-2921.
  • I-Moholkar, i-VS; I-Sable, SP; I-Pandit, AB (2000): Ukufaka imephu yokuqina kwamandla emgodini wokugezela nge-ultrasonic ngokusebenzisa i-acoustic emission. Ku: AIChE J. 2000, Vol.46 / No.4, 684-694.
  • Nascentes, CC; I-Korn, M .; Sousa, CS; I-Arruda, MAZ (2001): Ukusetshenziswa kwezibhuku ze-ultrasonic zezinhlelo zokusebenza ze-Analytical: Indlela entsha yokuThuthukiswa kwezimo. Ku: J. J. Braz. I-Chem. I-Soc. 2001, Vol.12 / No.1, 57-63.
  • I-Santos, i-HM; ULodeiro, C., Capelo-Martinez, J.-L. (2009): Amandla we-Ultrasound. Ku: I-Ultrasound kuKhemistry: Isicelo se-Analytical. (ku-J.-L. Capelo-Martinez). I-Wiley-VCH: Weinheim, 2009. 1-16.
  • Suslick, KS (1998): i-Kirk-Othmer Encyclopedia ye-Chemical Technology; Umhlaka 4 J. Wiley & Amadodana: New York, 1998, vol. 26, 517-541.

 

Xhumana Nathi / Cela Ukwaziswa Olwengeziwe

Khuluma nathi mayelana nezidingo zakho zokucubungula. Sizosikisela ukusetha nokulungiswa kwemingcele efanele yephrojekthi yakho.





Sicela uqaphele wethu Inqubomgomo yobumfihlo.




Amaqiniso Okufanele Ukwazi

I-ultrasonic izicubu ze-homogenizers ngokuvamile ibizwa ngokuthi i-sonicator yesondlo, i-lyser ye-sonic, i-ultrasound ephazamisayo, i-grinder ye-ultrasonic, i-sono-ruptor, i-sonifier, i-sonic dismembrator, i-cell disrupter, i-ultrasonic disperser noma i-dissolver. Amagama ahlukene avela ezinhlobonhlobo zokusebenza ezingagcwaliseka nge-sonication.