Catalytic activity and characterization of Fe-Zn-Mg-Al hydrotalcites in biohydrogen production
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10.1016/j.ijhydene.2013.06.066
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/20975
Tipus de documentArticle
Data publicació2013-08-21
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Abstract
Four different M2þeMgeAl hydrotalcite (HT) materials were investigated for their effect on
biohydrogen enhancement, where M2þ is Fe and/or Zn. HTs were synthesized by the
coprecipitation method and characterized by infrared spectroscopy (FTIR) and X-ray
powder diffraction (XRD). The effect of FeeZneMgeAl HTs dose (0e833 mg/L) on hydrogen
production was investigated in batch tests using sucrose-fed anaerobic mixed culture at
37 C. The best catalytic activity was observed on MgeAl HT at 167 mg/L with the
maximum hydrogen yield of 2.30 0.37 mol H2/mol sucrose, which was 44% higher than
the control. The major metabolites detected in the test were acetic acid (3.6 g/L), butyric
acid (4.1 g/L), and lactic acid (0.5 g/L). The basic properties of the different catalysts played
an important role in stimulating or inhibiting the activity of hydrogen producing bacteria.
Calcined MgeAl HT did not promote biohydrogen production, suggesting that the catalytic
enhancement was related to immobilization of bacteria in the electrostatically charged HT
interlayers.
CitacióWimonsong, P.; Llorca, J.; Nitisoravut, R. Catalytic activity and characterization of Fe-Zn-Mg-Al hydrotalcites in biohydrogen production. "International journal of hydrogen energy", 21 Agost 2013, vol. 38, núm. 25, p. 10284-10292.
ISSN0360-3199
Versió de l'editorhttp://www.sciencedirect.com/science/article/pii/S036031991301536X
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