Piroliza ostataka nakon proizvodnje piva s ciljem dobivanja energije i proizvoda dodane vrijednosti

master's thesis

• Title (english): Pyrolysis of beer production residues with the aim of gaining energy and added-value products
• Author: Domagoj Škorić
• Mentor: Vanja Jurišić (mentor)
• Committee member: Vanja Jurišić (predsjednik povjerenstva)
• Committee member: Ana Matin (član povjerenstva)
• Committee member: Ana Pospišil (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Sustainable Technologies and Renewable Energy Sources); Zagreb
• Defense date and country: 2018-03-21, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Proces proizvodnje piva je energetski zahtjevan postupak, a sukladno smjernicama Europske unije, nusproizvodi procesa proizvodnje moraju se zadovoljavajuće zbrinuti. Pivski trop predstavlja glavni nusproizvod u proizvodnji piva. Postoji veliki potencijal u iskorištenju pivskog tropa s ciljem proizvodnje energije. Trenutno je najčešći oblik zbrinjavanja anaerobna fermentacija i proizvodnja bioplina, međutim zbog velikih količina nusproizvoda koji nastaju tijekom proizvodnje piva, potrebno je istražiti i druge oblike dobivanja energije iz ove sirovine.
Cilj ovog rada bio je istražiti mogućnost iskorištenja nusproizvoda proizvodnje piva procesom termičke anaerobne razgradnje pri visokim temperaturama - pirolizom, a s ciljem proizvodnje energije i proizvoda dodane vrijednosti.
Analiza kemijskog sastava triju različitih uzoraka pivskog tropa (Staropramen, Ožujskog te Tomislav piva) pokazala je određene različitosti u sastavu vode, pepela, koksa, hlapljivih tvari, fiksiranog ugljika, te u sastavu organskih kemijskih spojevadušika, vodika, ugljika, kisika i sumpora). Nakon provedenog procesa pirolize analizirana su svojstva dobivenog biougljena.
Nakon svih provedenih analiza potvrdilo se da je pivski trop kao najzastupljeniji nusproizvod pivske industrije vrlo dobra sirovina za proizvodnju energije procesom pirolize.

Abstract (english)

Beer production process is a very demanding procedure and its by-products need to be efficiently disposed, pursuant to the European Union Directives. The Brewers’ spent grain (BSG) represents the main by-product in beer production. There is a vast potential of using BSG for energy production. At the moment, the most common method of disposal is anaerobic fermentation and biogas production. However, exploring other energy generating methods for this raw material is necessary, considering the great amount of by-products generated during the beer production process.
This thesis aims at exploring the possibility of generating energy and an added-value product by employing the thermal anaerobic decomposition at high temperatures – the pyrolysis on the by-products in beer production.
The chemical composition analysis of three different samples of BSG (from the beers Staropramen, Ožujsko and Tomislav) has shown a certain diversity in the composition of moisture, ash, coke, volatile matter, fixed carbon, and in the composition of elemental composition (nitrogen, hydrogen, carbon, oxygen and sulphur). After the pyrolysis, biochar properties were analyzed.
After all analyses have been conducted the conclusion is drawn, that BSG as the most common by-product in the beer industry, is a very good raw material for energy production through pyrolysis.

• Keywords: pivski trop; piroliza; biougljen; proizvodnja energije
• Keywords (english): Brewers’ spent grain; BSG; pyrolysis; biochar; energy production
• Language: croatian
• URN:NBN: urn:nbn:hr:204:357513
• Study programme: Title: Agroecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka agroekologija (magistar/ magistra inženjer/inženjerka agroekologija)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2018-03-27 09:20:38