Effects of adding conductive materials on the performance during two-phase anaerobic digestion of food waste
This research investigated the effects of adding zero-valent iron(ZVI),activated carbon(AC)and magnetite(Mt)on the performance and microbiological properties of two-phase anaerobic digestion of food waste.The results indicated that the addition of ZVI in the acidogenic reactor with AC and Mt in the methanogenic reactor showed the best effect on the anaerobic digestion performance.In the acidogenic reactor,the addition of ZVI increased the total volatile fatty acid concentration by 46.4%～47.9%compared with the control group,which provided better initial condition for the methanogenic reactor and significantly shortened the retardation time.In the methanogenic reactor,the addition of AC and Mt improved the stability of system,and the cumulative methane production was increased by 28.1%～68.4%compared with the control group.
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