Hydrogen Production from Apple Waste and Excess Sludge by Anaerobic Co-Digestion

doi:10.3969/j.issn.1673-1689.2017.08.002

Home > Archive>Volume 36, Issue 8, 2017 >792-799. DOI:10.3969/j.issn.1673-1689.2017.08.002

Hydrogen Production from Apple Waste and Excess Sludge by Anaerobic Co-Digestion
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                        10.3969/j.issn.1673-1689.2017.08.002
                    
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A batch experiment for hydrogen generation from apple waste and excess sludge by anaerobic digestion was conducted at the mesophilic temperature of 37 ℃ and with the initial pH of 8.0. Results showed that hydrogen yield was 11.5 mL/gVS and 8.6 mL/gVS with single-digestion of apple waste and excess sludge，respectively. The hydrogen yield of co-digestion group reached 16.9 mL/gVS，which was increased by 68.16% as compared with the calculated value of co-digestion group. The pH value of excess sludge group was the highest，while the SCOD of apple waste group was the highest.Values of pH and SCOD of co-digestion group were between those for two single-digestion groups due to the well-balanced nutrients of two organic wastes，and the strong buffer capacity of the reactor system. These indicated that co-digestion was not just the simple sum of the two organic matters，and there was a certain synergic effect in the co-digestion process，which made the hydrogen production efficiency of co-digestion group enhanced. In addition，the dehydrogenase activity of co-digestion group was significantly higher than that of apple waste group during the whole process. The dehydrogenase activity of co-digestion group maintained around 340 TFμg/（mL·h），with a maximum value of 384 TFμg/（mL·h）.

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YU Meijuan, ZHAO Xingshu, CHEN Yang, ZHAO Mingxing, HUANG Zhenxing, RUAN Wenquan. Hydrogen Production from Apple Waste and Excess Sludge by Anaerobic Co-Digestion[J]. Journal of Food Science and Biotechnology,2017,36(8):792-799.

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