Zbrinjavanje pivskog tropa kroz proizvodnju energije u malim pivovarama – primjer „Zmajska pivovara“

master's thesis

• Title (english): Disposal of beer dregs through energy production in small breweries – example on “Zmajska pivovara”
• Author: Andrea Puškarić
• Mentor: Nikola Bilandžija (mentor)
• Committee member: Nikola Bilandžija (predsjednik povjerenstva)
• Committee member: Vanja Jurišić (član povjerenstva)
• Committee member: Neven Voća (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Agricultural Engineering); Zagreb
• Defense date and country: 2021-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

U prehrambenoj industriji tijekom procesa proizvodnje nastaju značajne količine biorazgradivog ostatka. Zbrinjavanje takve sirovine predstavlja okolišni problem i dodatne troškove svakoj primarnoj proizvodnji, pa tako i u industriji proizvodnje piva. Pivski trop čini približno 85% ukupnih nusproizvoda u procesu proizvodnje piva. Zbrinjavanje nusproizvoda predstavlja veliki izazov pivskoj industriji zbog velikih količina proizašlog pivskog tropa, njegove niske tržišne vrijednosti te visokog sadržaja vlage koji otežava daljnju manipulaciju. U Hrvatskoj se trenutno većina pivskog tropa kompostira, odlaže na odlagalištima ili prodaje kao stočna hrana. Kompostiranje i odlaganje je može predstavljati veliki ekonomski gubitak za pojedine pivovare. U urbanim sredinama gdje je mala ili nikakva stočarska proizvodnja zbrinjavanje tropa može uzrokovati probleme tijekom primarnog poslovanja. Zbog toga je jedna od opcija zbrinjavanja pivskog tropa kroz proizvodnju energije. U ovom radu razmotrit će se dvije opcije oporabe pivskog tropa - anaerobnom digestijom i direktnim izgaranjem pivskog tropa primjeru Zmajske pivovare u Zagrebu.

Abstract (english)

Many biodegradable byproducts are created during production processes in the food industry. Disposal of such byproducts represents an environmental problem, as well as creates significant additional production costs. Brewery spent grain represent approximately 85% of all byproducts created during the beer brewing process. Disposal of such dregs represents a major challenge for the beer industry, due to the large amounts of brewery spent grain created during the brewing process, low market price of the spent grain, and high humidity contained in the spent grain which limits further processing. In Croatia, most brewery spent grain are currently composted, stored on landfills, or sold as livestock feed. Composting and landfill storage is a major financial loss for the breweries. In urban environments with little to none livestock breeding it is usually impossible to dispose of brewery spent grain by selling them as feed. For this reason, energy generation presents itself as a viable option of spent grain disposal. This paper explores two such options of brewery spent grain disposal – anaerobic digestion and combustion of brewery spent grain - on the example of Zmajska pivovara in Zagreb.

• Keywords: pivski trop; oporaba pivskog tropa; direktno izgaranje; anaerobna digestija
• Keywords (english): brewery spent grain; brewery spent grain disposal; combustion; anaerobic digestion
• Language: croatian
• URN:NBN: urn:nbn:hr:204:302174
• Study programme: Title: Agricultural Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka poljoprivredne tehnike (magistar/ magistra inženjer/inženjerka poljoprivredne tehnike)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-01-17 12:06:56