TY - JOUR
T1 - High-rate methane fermentation of lipid-rich food wastes by a high-solids co-digestion process
AU - Li, Yu You
AU - Sasaki, H.
AU - Yamashita, K.
AU - Saki, K.
AU - Kamigochi, I.
PY - 2002
Y1 - 2002
N2 - This paper presents an experimental study on anaerobic degradation of lipids-rich food wastes by using the high solids co-digestion process. The experiments were conducted under mesophilic (35°C) and thermophilic (55°C) condition, respectively, by using a semi-continuous flow completely mixed reactor. The influent TS level was controlled at around 10%, while the hydraulic retention time (HRT) was changed from 15 days to 7.5 days. The lipids (fats or oil and grease) content in the influent TS was changed from 8% to 40% by adding salad oil (vegetable) and lard (animal) to the food wastes. The result of this study showed that the food wastes containing high lipids content was effectively degraded by the high solids co-digestion process and over 85% of lipid was degraded to biogas with 60-65% of methane. In addition, thermophilic methane fermentation was more effective for reducing lipids and had more higher loading capacity compared with mesophilic condition.
AB - This paper presents an experimental study on anaerobic degradation of lipids-rich food wastes by using the high solids co-digestion process. The experiments were conducted under mesophilic (35°C) and thermophilic (55°C) condition, respectively, by using a semi-continuous flow completely mixed reactor. The influent TS level was controlled at around 10%, while the hydraulic retention time (HRT) was changed from 15 days to 7.5 days. The lipids (fats or oil and grease) content in the influent TS was changed from 8% to 40% by adding salad oil (vegetable) and lard (animal) to the food wastes. The result of this study showed that the food wastes containing high lipids content was effectively degraded by the high solids co-digestion process and over 85% of lipid was degraded to biogas with 60-65% of methane. In addition, thermophilic methane fermentation was more effective for reducing lipids and had more higher loading capacity compared with mesophilic condition.
KW - Anaerobic co-digestion
KW - High-solids
KW - Lipids (fats, oil and greases)
KW - Mesophilic
KW - Methane fermentation
KW - Thermophilic
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U2 - 10.2166/wst.2002.0420
DO - 10.2166/wst.2002.0420
M3 - Article
C2 - 12201096
AN - SCOPUS:0036060414
SN - 0273-1223
VL - 45
SP - 143
EP - 150
JO - Water Science and Technology
JF - Water Science and Technology
IS - 12
ER -