Sušenje prirodnih materijala u sušioniku s raspršivanjem

master's thesis

• Title (english): Spray drying of natural products
• Author: Nikola Milosavljević
• Mentor: Aleksandra Sander (mentor)
• Committee member: Aleksandra Sander (predsjednik povjerenstva)
• Committee member: Jasna Prlić Kardum (član povjerenstva)
• Committee member: Igor Dejanović (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2017-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering; Mechanical, Thermal and Separation Processes

Abstract

Zadnjih desetak godina ulažu se veliki napori i sredstva u istraživanje obnovljivih izvora energije. Nova generacija biogoriva kao sirovinu koristi biomasu algi od kojih se može proizvesti: biodizel, bioplin, bioulje, bioetanol itd. Osim kao sirovina za proizvodnju biogoriva, mikroalge se mogu koristiti i u drugim industrijama poput prehrambene i kozmetičke. Sušenje s raspršivanjem je proces prevođenja kapljevite pojne smjese u čvrsto stanje uvođenjem otopine u struju vrućeg plina. U ovom radu ispitana je mogućnost sušenja vodenih suspenzija mikroalgi u sušioniku s raspršivanjem u svrhu dobivanja suhe biomase mikroalgi. Mikroalge su prikupljene iz četiri različita izvora te je njihov uzgoj nastavljen u laboratoriju. Istražena je učinkovitost sušenja suspenzija mikroalgi različitih koncentracija te su procijenjene raspodjele veličina kapljica koje nastaju raspršivanjem. Na temelju toga je proračunata kinetika sušenja koja je dodatno opisana različitim matematičkim modelima.

Abstract (english)

In the last decade, a lot of resources and efforts have been invested in researching renewable energy sources. A new generation of biofuel uses algae biomass as raw material from which biodiesel, biogas, biooil, bioethanol, etc are produced. Aside from its use in biofuel production, microalgae can also be used in other industries, for example, food and cosmetic industry. Spray drying is a process of transforming liquid mixture into a solid state by drying it with hot gas. The possibility of drying water suspensions of microalgae in a spray dryer for obtaining dry bioalgae mass is examined in this paper. Microalgae were collected at 4 different sources, and their growth was continued in a laboratory. The efficiency of drying microalgae suspensions of different concentrations was examined and the droplet size distribution obtained by atomization was estimated. Based on that, the kinetics of drying was calculated and described using different mathematical models.

• Keywords: sušenje s raspršivanjem; mikroalge; raspodjela veličina kapljica; kinetika sušenja
• Keywords (english): spray drying; microalgae; drop size distribution; kinetics of drying
• Language: croatian
• URN:NBN: urn:nbn:hr:149:284076
• Study programme: Title: Chemical Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-04-29 12:17:33