Anaerobic digestion of dried/shredded food waste in a periodic anaerobic baffled reactor
| Autor: | Konstantina Papadopoulou, Gerasimos Lyberatos, D. Mathioudakis, Ioannis Michalopoulos, K. Kalogeropoulos |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Hydraulic retention time 020209 energy Biomass 02 engineering and technology 010501 environmental sciences Raw material household fermentable waste pabr Waste Disposal Fluid 01 natural sciences Environmental technology. Sanitary engineering Bioreactors Biogas 0202 electrical engineering electronic engineering information engineering Bioreactor biogas Anaerobiosis valorization TD1-1066 0105 earth and related environmental sciences Water Science and Technology Pulp and paper industry Refuse Disposal Anaerobic digestion Food waste Food source separation Environmental science Anaerobic exercise |
| Zdroj: | Water Science and Technology, Vol 84, Iss 2, Pp 420-430 (2021) |
| ISSN: | 1996-9732 0273-1223 |
| Popis: | The objective of the current work is to study the impact of the operational parameters' variation (HRT, OLR and T) on biomethane productivity in a periodic anaerobic baffled reactor (PABR). The feedstock used was a biomass product named food residue biomass (FORBI), which is dried and shredded source-separated household food waste. The PABR is an innovative, high-rate bioreactor. Apart from the hydraulic retention time (HRT) and the organic loading rate (OLR), an important operational parameter is the switching period (T) of the feeding compartment: when T is high, the bioreactor operation is similar to an anaerobic baffled reactor (ABR), while when it is low, the operation approaches that of an upflow anaerobic sludge blanket reactor (UASBR). Nine distinct experimental phases were conducted, during which the operational parameters of the PABR were consecutively modified: the HRT varied from 9 to 2.5 days, T between 2 days and 1 and finally the OLR from 1.24 gCOD/Lbioreactor*d to 8.08 gCOD/Lbioreactor*d. The maximum biomethane yield was 384 LCH4/kgFORBI corresponding to the operation at HRT = 5 d, OLR = 2.14 gCOD/Lbioreactor*d and T = 2 days. Similar efficiency (333 LCH4/kgFORBI) was achieved at higher OLR (4.53 gCOD/Lbioreactor*d). Highlights The feedstock used was a biomass product food residue biomass (FORBI), which is dried and shredded food waste.; Periodic anaerobic baffled reactor (PABR), a high-rate bioreactor.; The switching period (T) of the feeding compartment gives the bioreactor the element of operational flexibility.; The PABR can efficiently operate at HRTs as low as 2.5 days, however, the highest biomethane yield was achieved under HRT of 5 d. |
| Databáze: | OpenAIRE |
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