کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
681185 | 1460016 | 2013 | 6 صفحه PDF | دانلود رایگان |
The aim of the present research work was to optimise biogas production from cattle manure by adding crude glycerin from the biodiesel industry. For this purpose, 6% v/v crude glycerin (the optimum amount according to previous research) was added to ground manure and the mixture was sonicated to enhance biodegradability prior to anaerobic co-digestion at 55 °C. Two different reactors were used: continuously stirred (CSTR) and induced bed (IBR). The methanol and pure glycerin contents of the crude glycerin used in this study were 5.6% and 49.4% (w/w), respectively. The best results when operating in CSTR were obtained for an organic loading rate (OLR) of 5.4 kg COD/m3 day, obtaining 53.2 m3 biogas/t wet waste and 80.7% COD removal. When operating in IBR, the best results were obtained for an OLR of 6.44 kg COD/m3 day, obtaining 89.6% COD removal and a biogas production of 56.5 m3/t wet waste.
► Biogas production of cattle manure was optimised by adding glycerin as co-substrate.
► Better results using induced bed reactor versus continuously stirred tank reactor.
► Optimum organic loading rate was 6.4 kg COD/m3 day in inducted bed reactor.
► Ninety percent COD removal and 0.59 m3 CH4/kg VS (56.5 m3/t waste) were achieved.
Journal: Bioresource Technology - Volume 127, January 2013, Pages 312–317