| Autor: |
Bakhshi Zeinab, Najafpour Ghasem, Navayi Neya Bahram, Kariminezhad Esmaeel, Pishgar Roya, Moosavi Nafise |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
|
| Zdroj: |
Chemical Industry and Chemical Engineering Quarterly, Vol 17, Iss 4, Pp 517-524 (2011) |
| Druh dokumentu: |
article |
| ISSN: |
1451-9372 |
| DOI: |
10.2298/CICEQ110428037B |
| Popis: |
Biodegradation of synthetic wastewater containing phenol by upflow anaerobic packed bed reactor (UAPB) was studied in this work. The reactor was operated at a hydraulic retention time (HRT) of 24 h and under mesophilic (30±1ºC) conditions. The startup operation was conducted for 150 days; split into 4 phases. The phenol concentration was stepwise increased. The concentration of phenol in phases 1, 2, 3 and 4 were 100, 400, 700 and 1000 mg/l, respectively. In phase 1, the reactor reached steady state conditions on the 8th day with a phenol removal efficiency and biogas production rate of 96.8% and 1.42 l/d, respectively. For an increase of the initial phenol concentration in phase 2, a slight decrease in phenol removal efficiency was observed. Similar trends were observed in phases 3 and 4 of startup. Due to the high phenol concentration a sudden decrease in removal efficiency and biogas production was observed. The surviving microorganisms were gradually adapted and acclimated to high phenol concentrations. In phases 3 and 4, the phenol removal efficiency at steady state conditions were 98.4 and 98%, respectively. The maximum biogas production was observed at day 130 with a value of 3.57 l/d that corresponds to phenol concentration of 1000 mg/l. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
