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- Title
Utilization of food waste for bio-hydrogen and bio-methane production: influences of temperature, OLR, and in situ aeration.
- Authors
Hassan, Gamal Kamel; Hemdan, Bahaa Ahmed; El-Gohary, Fatma A.
- Abstract
Dark fermentation of food leftovers for hydrogen production has been studied using a two-stage upflow anaerobic biofilter reactor. To determine the optimum temperature for hydrogen production, the two reactors were operated in parallel at two different temperatures: 35 °C and 45 °C as suitable for prevailing ambient temperature in Egypt. The results indicated that hydrogen production at 45 °C was higher than that at 35 °C. To determine the optimum organic loading rate, a comparative study was carried out using two different OLRs: 10- and 20-g COD/L day. The system was run in a consecutive manner. The first bioreactor for H2 production and the second for CH4 production. Under optimal temperature (45 °C), the hydrogen production rates were 51.9 mL/L day and 10 mL/L day for OLRs 20- and 10-g COD/L day, respectively. When a drop in H2 production occurred, in situ aeration for 24 h was carried out to deactivate methanogens. The total energy production was improved by combining H2 and CH4 bioreactors.
- Publication
Journal of Material Cycles & Waste Management, 2020, Vol 22, Issue 4, p1218
- ISSN
1438-4957
- Publication type
Academic Journal
- DOI
10.1007/s10163-020-01014-5