کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4472403 1315067 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Long-term anaerobic digestion of food waste stabilized by trace elements
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Long-term anaerobic digestion of food waste stabilized by trace elements
چکیده انگلیسی

The purpose of this study was to examine if long-term anaerobic digestion of food waste in a semi-continuous single-stage reactor could be stabilized by supplementing trace elements. Contrary to the failure of anaerobic digestion of food waste alone, stable anaerobic digestion of food waste was achieved for 368 days by supplementing trace elements. Under the conditions of OLR (organic loading rates) of 2.19–6.64 g VS (volatile solid)/L day and 20–30 days of HRT (hydraulic retention time), a high methane yield (352–450 mL CH4/g VSadded) was obtained, and no significant accumulation of volatile fatty acids was observed. The subsequent investigation on effects of individual trace elements (Co, Fe, Mo and Ni) showed that iron was essential for maintaining stable methane production. These results proved that the food waste used in this study was deficient in trace elements.


► Korean food waste was found to contain low level of trace elements.
► Stable anaerobic digestion of food waste was achieved by adding trace elements.
► Iron played an important role in anaerobic digestion of food waste.
► Cobalt addition further enhanced the process performance in the presence of iron.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Waste Management - Volume 32, Issue 8, August 2012, Pages 1509–1515
نویسندگان
, ,