The effect of brewery spent grain application on biogas yields and kinetics in co-digestion with sewage sludge
Artykuł w czasopiśmie
MNiSW
100
Lista 2021
| Status: | |
| Autorzy: | Szaja Aleksandra, Montusiewicz Agnieszka, Lebiocka Magdalena, Bis Marta |
| Dyscypliny: | |
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| Rok wydania: | 2020 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 8 |
| Numer artykułu: | 10590 |
| Strony: | 1 - 23 |
| Impact Factor: | 2,984 |
| Web of Science® Times Cited: | 22 |
| Scopus® Cytowania: | 25 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 22 grudnia 2020 |
| Abstrakty: | angielski |
| The present study examines the effect of introducing dried brewery spent grain (BSG),known as the main solid by-product of the brewery industry on biogas yields andkinetics in co-digestion with sewage sludge (SS). The experiment was conducted insemi-continuous anaerobic reactors (supplied once a day) operating under mesophilicconditions (35◦C) at different hydraulic retention times (HRT) of 18 and 20 d. Inco-digestion runs, the BSG mass to the feed volume ratio was constant and maintained1:10.The results indicated that the addition of BSG did not influence the biogasproduction, by comparison with SS mono-digestion (control run). At HRT of 18 d,in the co-digestion run, the average methane yield was 0.27 m3kg/VSadded, while in thecontrol run the higher value of 0.29 m3kg/VSaddedwas observed. However, there wasno difference in terms of statistical significance. At HRT of 20 d, the methane yield was0.21 m3kg/VSaddedfor both mono- and co-digestion runs. In the BSG presence, thedecrease in kinetic constant values was observed. As compared to SS mono-digestion,reductions by 21 and 35% were found at HRT of 20 and 18 d, respectively. However,due to the supplementation of the feedstock with BSG rich in organic compounds, thesignificantly enhanced energy profits were achieved with the highest value of approx.40% and related to the longer HRT of 20 d. Importantly, the mono- and co-digestionprocess proceeded in stable manner. Therefore, the anaerobic co-digestion of SS andBSG might be considered as a cost-effective solution that could contribute to theenergy self-efficiency of wastewater treatment plants (WWTPs) and sustainable wastemanagement for breweries. |
