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This research investigated the effects of adding zerovalent iron (ZVI), activated carbon (AC) and magnetite (Mt)on the performance and microbiological properties of twophase 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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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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