Comparison of hematite-facilitated anaerobic digestion of acetate and beef extract.
The effect of hematite with different specific surface areas (SSA) on anaerobic methanogenic process was investigated in this study using two different carbon sources (acetate or beef extract). Comparative analyses showed that methane generation rate, microbial growth and the starting-up duration were all significantly enhanced by hematite. The reduction rate of high SSA hematite was 2.5-3.5 times greater than that of low SSA hematite. This work indicated that low SSA hematite was superior to high SSA hematite in facilitating methanogenesis which was partially attributed to the lower affinity for the iron-reduction bacteria.
a School of Resources and Environmental Engineering , Hefei University of Technology , Hefei , Anhui 230009 , People's Republic of China.
Dan
D
Zhu
Jin
J
Wang
Tian-Hu
TH
Chen
Juan
J
Tan
Dun-Fan
DF
Yao
D000085:Acetates / Q000378:metabolism*; D000693:Anaerobiosis; D000818:Animals; D001419:Bacteria / Q000378:metabolism*; D002244:Carbon / Q000378:metabolism; D002417:Cattle; D005290:Ferric Compounds / Q000378:metabolism*; D008697:Methane / Q000378:metabolism*; D010084:Oxidation-Reduction; D000069466:Red Meat / Q000032:analysis*; D012722:Sewage / Q000032:analysis / Q000382:microbiology*
D000085:Acetates; D005290:Ferric Compounds; D012722:Sewage; C000499:ferric oxide; D002244:Carbon; D008697:Methane
anaerobic digestion; hematite; methane; microbial iron reduction