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Effect of pressure on the removal of NH$_3$ from hydrolyzed and pre-fermented slaughterhouse waste for better biomethanization
Zver, Aleš (Avtor), Bernik, Rajko (Avtor), Mihelič, Rok (Avtor)

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Izvleček
Slaughterhouse waste (SW) is potentially a good source of biomethane; however, its excessive ammonia content quickly causes inhibition of microbial processes. Our aim was therefore to remove ammonia from SW before putting it into a biogas reactor. Experimental 120 L pressure container was constructed to observe NH$_3$ removal from diluted slaughterhouse waste at constant air flow of 144 NL/min, temperature 130 °C, and at different pressures: 300 kPa, 600 kPa, and 900 kPa. SW was first allowed to hydrolyze for 14 days at 38 °C. The SW was diluted with water (DSW) to 8.4% dry matter (DM) and forcibly aerated for 334 min. From the DSW, 0.7%, 3.8%, and 9% of initial total N were removed at 300 kPa, 600 kPa, and 900 kPa, respectively. However, the C/N ratio changed only slightly, from the initial 4.38 to 3.17, which is not a promising result for biomethanization. Further research on the presented system with the addition of bases might be promising to remove more ammonia.

Jezik:Angleški jezik
Ključne besede:slaughterhouse waste, hydrolyzes, pressure, pilot-scale, ammonia, biogas
Vrsta gradiva:Članek v reviji (dk_c)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
Leto izida:2019
Št. strani:11 str.
Številčenje:Vol. 12, iss. 10, art. 1868
UDK:621.31
ISSN pri članku:1996-1073
DOI:10.3390/en12101868 Povezava se odpre v novem oknu
COBISS.SI-ID:9222777 Povezava se odpre v novem oknu
Število ogledov:85
Število prenosov:30
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
 
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Gradivo je del revije

Naslov:Energies
Skrajšan naslov:Energies
Založnik:MDPI
ISSN:1996-1073
COBISS.SI-ID:518046745 Povezava se odpre v novem oknu

Gradivo je financirano iz projekta

Financer:EC - European Commission
Program financ.:European Social Fund

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Ministry of Higher Education, Science and Technology of the Republic of Slovenia

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:16.05.2019

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:klavniški odpadki, hidroliza, pritisk, amonijak, bioplin

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