Transesterifikacija triglicerida potpomognuta hidrodinamičkim kavitacionim postupkom
Triglyceride transesterification assisted by hydrodynamic cavitation process
Докторанд
Nikolić, Ivan R.Ментор
Cvjetićanin, NikolaЧланови комисије
Adnađević, BorivojStanisavljev, Dragomir
Nedić Vasiljević, Bojana
Popović, Aleksandar
Метаподаци
Приказ свих података о дисертацијиСажетак
Sa ciljem da se unapredi reakcija transesterifikacije triglicerida metanolom, radi
sinteze metil estara masnih kiselina - biodizela, putem poboljšavanja transfera mase i
poboljšanja energetske efikasnosti, u ovoj tezi ispitivan je uticaj operativnih parametara
procesa alkalno katalizovane reakcije transesterifikacije rafinisanog suncokretovog
(Helianthus annuus) ulja metanolom, potpomognute efektima hidrodinamičke kavitacije
generisanim: a) Venturijevim kavitatorom; b) Venturijevim kavitatorom, uz dodatak
korastvarača tetrahidrofurana reakcionoj smeši, čime se sistem iz dvofaznog prevodio u
jednofazni; c) rotor pulsnim kavitatorom. Za svaki proces određen je kavitacioni prinos kao
merilo odnosa mase dobijenog proizvoda i energije utrošene prilikom sinteze, čime je
prikazana energetska efikasnost procesa.
Pokazano je da efekti hidrodinamičke kavitacije znatno utiču na stepen konverzije
triglicerida u metil estre masnih kiselina pri reakciji transesterifikacije triglicerida
metanolom, na... dužinu trajanja procesa kojime se dobija zadovoljavajući stepen konverzije
te da ovako potpomognuta reakcija transesterifikacije triglicerida metanolom ima znatno
više vrednosti kavitacionog prinosa u poređenju sa konvencionalnom metodom ili
metodama transesterifikacije potpomognutim na drugačije načine, navedenim u dostupnoj
naučnoj literaturi.
With the aim of improving the reaction of transesterification of triglycerides with
methanol, for the synthesis of methyl ester of fatty acids - biodiesel, by improving mass
transfer and improving energy efficiency, in this thesis the effects of the operating
parameters of the alkali-catalyzed transesterification reaction of refined sunflower
(Helianthus annuus) oil with methanol were investigated. assisted by hydrodynamic
cavitation effects generated by: a) Venturi cavitator; b) Venturi cavitator, with the addition
of tetrahydrofuran cosolvent to the reaction mixture, which converted the system from
two-phase to one-phase; c) rotor pulse cavitator. For each process, the cavitation yield was
determined as a measure of the ratio of the mass of the obtained product to the energy
consumed during synthesis, which shows the energy efficiency of the process.
It was shown that the effects of hydrodynamic cavitation significantly influence the degree
of conversion of triglycerides into methyl ...esters of fatty acids during the transesterification
reaction of triglycerides with methanol, the duration of the process by which a satisfactory
degree of conversion is obtained, and that the transesterification of triglycerides with
methanol assisted in this way has a significantly higher value of cavitation yield compared
to by the conventional method or transesterification methods supported in other ways,
listed in the available scientific literature.