Naslov
Biokenoanyagol eloallitasa ionos folyadekokban
(Biolubricant production in ionic liquid)

Autori
Banyai, Tamas ; Gubicza, Laszlo ; Findrik Blažević, Zvjezdana ; Nemestothy, Nandor ; Belafine Bako, Katalin

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Müszaki Kemiai Napok 2011, Conference of Chemical Engineering / Nagy, Endre ; Bokrossy-Csiba, Maria ; Törcsvaryne Kovacs Zsuzsanna - Veszprém, 2011, 237-240

ISBN
978-615-5044-07-6

Skup
Müszaki Kemiai Napok 2011, Conference of Chemical Engineering

Mjesto i datum
Veszprém, Mađarska, 27.04.2011. - 28.04.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
ionos folyadekokban; eljárással; Statistica; optimalizálás
(ionic liquids; esterification; Statistica; optimization)

Sažetak
Ionic liquids are organic salts, which are empirically built up by cations and anions, do not contain neutral components. They have good thermal stability and low vapour pressure, different combinations of cations and anions can all fourth wide scale of properties, therefore they are considered as modern, environmentally friendly reaction medias. They are non-volatile and flammable, therefore they begun to replace the conventional organic solvents as reaction media. Recently was recognized enzyme in organic solvents and ionic liquids can also express the catalytic effect, not only in aqueous media. The ionic liquids can increase the enzyme activity, stability and enantioselectivity. In two phase systems the enzyme outstands in the ionic liquid phase, therefore the enzyme can be reused without purification. In chemical industry one of the most widely used renewable material sources are plant oils. Esterification of the oleic acid with short carbon chain alcohols gives biofuels, with long chain alcohols biolubricants can be produced. Advantage over traditional petroleum based- products is they do not accumulate in nature, they are non-toxic, biodegradable. The applied iso- amylalcohol is the main compound of the distillaries byproducts called fusel oil. Previously biolubricant was successfuly produced form fusel oil and iso-amylalcohol substrates, but solution for polar substrates was problematic, that was solved by using ionic liquids. The optimal reaction parameters in substrate molar ratios, initial water content, amount of enzyme and type of ionic liquid were determinated by experimental design using Statistica software. Some of the ionic liquids have catalytic effect without enzyme, therefore control reactions were necessary to determine which ionic liquid has negligible catalytic effect. In five of the six investigated ionic liquid the yield was the same without enzyme, while in case BmimPF6, the yield was neglibible. In shorter time higher yield was achieved in presence of ionic liquid against other methods. Increasing temperature levels made higher yield till a limit, higher temperature does not result more product, but thermal deactivation of the enzyme did not occur.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

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