Abstrakti
This study investigated for the first time if ammonia tolerant methanogenic consortia can be stored in gel (biogel) and used in a later time on-demand as bioaugmentation inocula, to efficiently relieve ammonia inhibition in continuous biomethanation systems. Moreover, wood biochar was assessed as a potential enhancer of the novel biogel bioaugmentation process. Three thermophilic (55 °C), continuous stirred-tank reactors (RBgel, RChar and RMix), operated at 4.5 g NH4+-N L-1 were exposed to biogel, biochar and mixture of biogel and biochar, respectively, while a fourth reactor (RCtrl) was used as control. The results showed that the methane production yields of RMix, RChar and RBgel increased by 28.6%, 20.2% and 10.7%, respectively compared to RCtrl. The highest methane yield was achieved by the synergistic interaction between biogel and biochar. Additionally, biogel stimulated a rapid recovery of Methanoculleus thermophilus sp. and syntrophic acetate oxidising bacteria populations.
| Alkuperäiskieli | Englanti |
|---|---|
| Artikkeli | 126146 |
| Sivumäärä | 8 |
| Julkaisu | Bioresource Technology |
| Vuosikerta | 343 |
| Varhainen verkossa julkaisun päivämäärä | 18 lokak. 2021 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 2022 |
| OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Rahoitus
Yixin Yan appreciate the financial support from China Scholarship Council. Ioannis A. Fotidis acknowledges the financial support of National Natural Science Foundation of China , International Cooperation and Exchange Program “LyoCH 4 -Development of novel lyophilized bioaugmentation inocula to alleviate ammonia toxicity in anaerobic reactors” ( 5185041512 ).
YK:n kestävän kehityksen tavoitteet
Tämä tuotos edistää seuraavia kestävän kehityksen tavoitteita:
-
SDG 7 – Edullinen ja puhdas energia
Julkaisufoorumi-taso
- Jufo-taso 2
!!ASJC Scopus subject areas
- Bioengineering
- Environmental Engineering
- Renewable Energy, Sustainability and the Environment
- Waste Management and Disposal
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