TY - JOUR
T1 - Effect of the initial total solids concentration and initial pH on the bio-hydrogen production from cafeteria food waste
AU - Ramos, Carlos
AU - Buitrón, Germán
AU - Moreno-Andrade, Iván
AU - Chamy, Rolando
N1 - Funding Information:
This research was supported by CONACYT (Project 100298 ) and DGAPA-UNAM (PAPIIT IB100612 ). The authors acknowledge the technical help of Jaime Pérez Trevilla.
PY - 2012/9
Y1 - 2012/9
N2 - In this paper, the influence of the initial pH and the total solids (TS) concentration on hydrogen production from the organic fraction of cafeteria food waste at mesophilic conditions in batch reactors was determined. It was found that the yield and specific hydrogen production rate were influenced by the initial pH and the initial total solids concentration. The highest hydrogen production rate, 2.90 mmolH2/d, was obtained at 90 gTS/L and a pH of 5.5. Under this condition, the TS and chemical oxygen demand (COD) removal were the lowest (10% as TS and 14% as COD). However, considering the specific values, the highest specific degradation rate (192.2 mLH2/gVS removed/d) was obtained with the lowest TS concentration and an initial pH of 7.0. It was found that the influence of the TS concentration on hydrogen production was more significant than that of the initial pH for this type of residues. Highlights: Hydrogen production was conditioned by the initial total solid concentration and pH. Initial TS concentration was more significant than the initial pH on the SHP. Highest SHP were obtained at the highest TS concentration. Highest TS and COD removal were observed at low TS concentration.
AB - In this paper, the influence of the initial pH and the total solids (TS) concentration on hydrogen production from the organic fraction of cafeteria food waste at mesophilic conditions in batch reactors was determined. It was found that the yield and specific hydrogen production rate were influenced by the initial pH and the initial total solids concentration. The highest hydrogen production rate, 2.90 mmolH2/d, was obtained at 90 gTS/L and a pH of 5.5. Under this condition, the TS and chemical oxygen demand (COD) removal were the lowest (10% as TS and 14% as COD). However, considering the specific values, the highest specific degradation rate (192.2 mLH2/gVS removed/d) was obtained with the lowest TS concentration and an initial pH of 7.0. It was found that the influence of the TS concentration on hydrogen production was more significant than that of the initial pH for this type of residues. Highlights: Hydrogen production was conditioned by the initial total solid concentration and pH. Initial TS concentration was more significant than the initial pH on the SHP. Highest SHP were obtained at the highest TS concentration. Highest TS and COD removal were observed at low TS concentration.
KW - Biological hydrogen production
KW - Food waste
KW - Initial pH
KW - OFUSW
KW - Total solids concentration
UR - http://www.scopus.com/inward/record.url?scp=84865529012&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2012.06.051
DO - 10.1016/j.ijhydene.2012.06.051
M3 - Article
AN - SCOPUS:84865529012
SN - 0360-3199
VL - 37
SP - 13288
EP - 13295
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 18
ER -
