Importance of storage time in mesophilic anaerobic digestion of food waste

被引：5

作者：

Fan Lü ^{[1
]}

Xian Xu ^{[1
]}

Liming Shao ^{[2
,3
]}

Pinjing He ^{[2
,3
]}

机构：

[1] State Key Laboratory of Pollution Control and Resource Reuses, Tongji University

[2] Institute of Waste Treatment and Reclamation, Tongji University

[3] Centre for the Technology Research and Training on Household Waste in Small Towns & Rural Area, Ministry of Housing and Urban–Rural Development of PR China

来源：

Journal of Environmental Sciences | 2016年 / 45卷 / 07期

关键词：

Food waste; Bio-pretreatment; Storage; Fermentation; Biochemical methane potential; Hydrolysates;

D O I：

暂无

中图分类号：

X799.3 [生活];

学科分类号：

083002 ;

摘要：

Storage was used as a pretreatment to enhance the methanization performance of mesophilic anaerobic digestion of food waste. Food wastes were separately stored for 0, 1,2, 3, 4, 5, 7, and 12 days, and then fed into a methanogenic reactor for a biochemical methane potential(BMP) test lasting up to 60 days. Relative to the methane production of food waste stored for 0–1 day(285–308 m L/g-added volatile solids(VSadded)), that after2–4 days and after 5–12 days of storage increased to 418–530 and 618–696 m L/g-VSadded,respectively. The efficiency of hydrolysis and acidification of pre-stored food waste in the methanization reactors increased with storage time. The characteristics of stored waste suggest that methane production was not correlated with the total hydrolysis efficiency of organics in pre-stored food waste but was positively correlated with the storage time and acidification level of the waste. From the results, we recommend 5–7 days of storage of food waste in anaerobic digestion treatment plants.

引用

页码：76 / 83

页数：8

共 26 条

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