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Salinity inhibition in thermophilic anaerobic digestion of organic waste
ID
Zupančič, Gregor Drago
(
Avtor
),
ID
Panjicko, Mario
(
Avtor
),
ID
Marinšek-Logar, Romana
(
Avtor
),
ID
Lavrič, Lea
(
Avtor
),
ID
Zorec, Maša
(
Avtor
),
ID
Fanedl, Lijana
(
Avtor
)
PDF - Predstavitvena datoteka,
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MD5: D9AB8DCB0C3947444C6BF20E763CC53E
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/2076-3417/13/11/6590
Galerija slik
Izvleček
Anaerobic digestion, despite its preferable use as a treatment for high organic matter polluted waste streams, is susceptible to inhibitors, salt included. Therefore, two different experiments were conducted to observe the responses of bacterial and archaeal communities to hypersaline environments. In the first experiment, salt was added gradually, while in the second experiment, salt was added rapidly (so-called salt shocks were performed). The results of the gradual addition of salt showed a recovery of methane production after the salt concentration decreased. The NaCl concentration of 28.2 g/L seems to be the limit between stable operation and occurrence inhibition. The specific biogas production varied between 0.490 and 0.562 m3/kgtCOD during the stepwise salt addition, depending on the salt concentration, while the maximal achieved COD removal was 79.8%. The results of the rapid salt addition showed good recovery of the bacterial community, while a reduction of salt-sensitive species was observed in the archaeal community. The trend of specific biogas production during rapid salt addition was stable with an average value of 0.590 m3/kgtCOD, and it was observed that higher concentrations of up to 39.4 g/L of NaCl were tolerated. The maximum COD removal achieved during rapid salt addition was 83.1%. In conclusion, certain bacterial and archaeal communities were well-adapted to the hypersaline environment and remained active during the anaerobic digestion of substrates with high salt concentration.
Jezik:
Angleški jezik
Ključne besede:
biogas
,
organic waste
,
microbial community structure
,
terminal restriction fragment length polymorphism
,
salinity inhibition
,
thermophilic
,
anaerobic digestion
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
BF - Biotehniška fakulteta
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2023
Št. strani:
15 str.
Številčenje:
Vol. 13, iss. 11, art. 6590
PID:
20.500.12556/RUL-147076
UDK:
579
ISSN pri članku:
2076-3417
DOI:
10.3390/app13116590
COBISS.SI-ID:
153890051
Datum objave v RUL:
22.06.2023
Število ogledov:
699
Število prenosov:
49
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Applied sciences
Skrajšan naslov:
Appl. sci.
Založnik:
MDPI
ISSN:
2076-3417
COBISS.SI-ID:
522979353
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.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
mikrobiologija
,
organski odpadki
,
bioplin
,
anaerobna razgradnja
,
slanost
Projekti
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Slovenian Technology Agency, Project SRRP TIA
Številka projekta:
P-SRRP-09/II/90
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