Repozitorij Univerze v Novi Gorici

Iskanje po repozitoriju
A+ | A- | Pomoč | SLO | ENG

Iskalni niz: išči po
išči po
išči po
išči po
* po starem in bolonjskem študiju

Opcije:
  Ponastavi


1 - 4 / 4
Na začetekNa prejšnjo stran1Na naslednjo stranNa konec
1.
Anaerobic digestion of brewery spent grain as a mono-substrate in a two-stage anaerobic digestion using solid-state digestion reactor and granulated biomass reactor
Marina Tišma, Bruno Zelić, Romana Marinšek Logar, Mario Panjicko, Gregor Drago Zupančič, 2016, objavljeni znanstveni prispevek na konferenci (vabljeno predavanje)

Opis: Anaerobic digestion of brewery spent grain as a mono-substrate was studied. Anaerobic digestion was phase separated in solid state anaerobic digestion reactor, where mostly microbiological hydrolysis and acidogenesis and granular biomass reactor where mostly methanogenesis was performed. The overall process exhibited total solids degradation efficiency between 73.6 and 80.4%. Average specific biogas production was 424±36 L/kg, whereas biomethane production was 230±34 L/kg of brewery spent grain total solids. Granular biomass after adaptation exhibited stabile operation at C-N ratios as low as 0.2 – 0.3, which is rare in anaerobic digestion. P-cresol as a degradation product was present in concentrations up to 45 mg/L and during the process successfully degraded. The excellent adaptability of the granular biomass is confirmed by 67% shift in bacterial and a 32% shift in archaeal community structure in granular biomass reactor after 198 days of successful operation.
Najdeno v: osebi
Ključne besede: Anaerobic digestion, biogas production, brewery spent grain, microbial biomass, p-cresol degradation, solid state anaerobic digestion
Objavljeno: 21.10.2016; Ogledov: 1798; Prenosov: 0
.pdf Polno besedilo (968,03 KB)

2.
Biogas production from brewery spent grain as a mono-substrate in a two-stage process composed of solid-state anaerobic digestion and granular biomass reactors
Mario Panjicko, Gregor Drago Zupančič, Romana Marinšek-Logar, Lijana Fanedl, Marina Tišma, Bruno Zelić, 2017, izvirni znanstveni članek

Opis: Anaerobic digestion of brewery spent grain as a mono-substrate was studied. Brewery spent grain is a substrate consisting largely of cellulose, hemicellulose and lignin, which are difficult to degrade anaerobically, mostly due to the presence of degradation products, such as phenolic compounds, which cause process inhibition. Therefore, a two-stage system was used for anaerobic digestion. Anaerobic digestion was phase separated in a solid-state anaerobic digestion reactor, where microbiological hydrolysis and acidogenesis occurred and in a granular biomass reactor where mostly methanogenesis was performed. The overall process exhibited total solids degradation efficiency between 75.9 and 83.0 %. Average specific biogas production was 414±32 L/kg, whereas biomethane production was 224±34 L/kg of added total solids. Granular biomass after adaptation exhibited stable operation at substrate C/N ratios in range 0.16 – 4.68. p-cresol was present in concentrations up to 45 mg/L and during the process was successfully degraded by granular biomass. The excellent adaptability of granular biomass was confirmed by 68.2 % shift in bacterial and a 31.8 % shift in archaeal community structure in a granular biomass reactor. The structure of the bacterial community from granular biomass reactor and solid-state anaerobic digestion reactor remained 79.4 % similar at the end of the experiment, whereas archaeal community was only 31.6 % similar. The process exhibited stable operation for 198 days, which shows that brewery spent grain can be successfully anaerobically digested and used for biogas production.
Najdeno v: osebi
Ključne besede: biogas production, brewery spent grain, C/N ratio, dry digestion, microbial biomass, solid-state anaerobic digestion
Objavljeno: 18.08.2017; Ogledov: 1205; Prenosov: 0
.pdf Polno besedilo (2,27 MB)

3.
Corn silage fungal-based solid-state pretreatment for enhanced biogas production in anaerobic co-digestion with cow manure
Marina Tišma, Mirela Planinc, Ana Bucić Kojić, Mario Panjičko, Gregor Drago Zupančič, Bruno Zelić, 2018, izvirni znanstveni članek

Opis: The objective of this research was to use white-rot fungus Trametes versicolor for corn silage pretreatment and to investigate the effect of pretreatment on biogas productivity. Semi-continuous pilot-scale experiment, comprised of two experimental phases, was carried out. In the first phase, operational conditions of the full-scale biogas plant were reproduced at pilot-scale. In that phase, the reactor was daily fed with the mixture of cow manure, digestate from industrial postfermentor, corn grits and ensiled corn silage, and the average methane generation rate was 0.167 m3 CH4 per kgVS. In the second phase, corn grits and ensiled corn silage were replaced with corn silage pretreated with T. versicolor, and the average methane generation rate increased up to 0.236 m3 per CH4 kgVS. The results of this study suggest that application of fungal-based solid-state pretreated corn silage has positive effect on pH stability and increase the biogas productivity.
Najdeno v: osebi
Ključne besede: Semi-continuous anaerobic co-digestion Fungal-based pretreatment Corn silage Cow manure
Objavljeno: 17.01.2018; Ogledov: 751; Prenosov: 0
.pdf Polno besedilo (785,43 KB)

4.
Primjena pivskog tropa u proizvodnji bioplina
Mario Panjicko, Gregor Drago Zupančič, Marina Tišma, Bruno Zelić, 2017, samostojni znanstveni sestavek ali poglavje v monografski publikaciji

Opis: Pivarska industrija je veliki generator otpadnih tokova. Pivski trop, kao jedan od tri glavna otpada toka, po kemijskom je sastavu lignocelulozni materijal. Zbog sve većeg porasta cijena energije i povećane brige za očuvanjem okoliša, u zadnje vrijeme se provode brojna istraživanja procesa anaerobne razgradnje (anaerobne digestije) pivskog tropa u svrhu proizvodnje bioplina. Bioplin proizveden prilikom procesa anaerobne razgradnje sastoji se najvećim dijelom od metana (CH4) i ugljikovog dioksida (CO2), s malim udjelima sumporovodika (H2S) i amonijaka (NH3) te plinova koji se mogu naći u tragovima, kao što su vodik (H2), dušik (N2), ugljikov monoksid (CO), zasićeni ili halogenirani ugljikovodici te kisik (O2). Osnovni problem primjene pivskog tropa u procesu anaerobne razgradnje u svrhu proizvodnje bioplina je njegov složen kemijski sastav. Strukturna kompleksnost lignina, njegova kemijska stabilnost i netopljivost posebice otežavaju proces anaerobne razgradnje. U ovom pregledu prikazane su osnove procesa anaerobne razgradnje, vrste reaktora za provedbu procesa anaerobne razgradnje te su opisane mogućnosti primjene pivskog tropa u procesu anaerobne razgradnje.
Najdeno v: osebi
Ključne besede: anaerobna razgradnja, bioreaktori, lignoceluloza, bioplin, pivski trop
Objavljeno: 23.04.2018; Ogledov: 931; Prenosov: 0
.pdf Polno besedilo (6,31 MB)

Iskanje izvedeno v 0 sek.
Na vrh