Impact of C/N ratios and organic loading rates of paper, cardboard and tissue wastes in batch and CSTR anaerobic digestion with food waste on their biogas production and digester stability
作者： Muhammad Shahbaz , Muhammad Ammar , Rashid Mustafa Korai , Nadeem Ahmad , Awais Ali
DOI: 10.1007/S42452-020-03232-W
关键词:
摘要: The C/N ratio and organic loading rates (OLRs) are the main constraint factors of anaerobic digestion (AD) which symbols in mortifications due to rapid accumulation volatile fatty acids (VFAs) total ammonia nitrogen (TAN). In this study, addition high C-content wastes; paper waste (PW), cardboard (CW), tissue (TW) into food (FW) feedstock is individually taken consideration. At first, batch conducted at a balanced materials then CSTR carried out different OLRs investigate potential biogas production process stability, under mesophilic conditions. digestion, co-substrate (PW + FW) outperformed other feedstocks terms stability slow formation VFAs stable microbial conversion fuel. highest specific yield (SBY) 651 mL/gVS methane (SMY) 350 mL/gVS with 57% rate biodegradability obtained from OLR 15 gVS/L d. Furthermore, superb performance subjected optimum digester for 30 days. SBY 22 L/gVS SMY 13 utmost VS reduction 96%. pH, alkalinity, COD, TS reduction, VFAs, TAN concentration all optimal range 25 2 This study provides new information regarding AD own great improving productivity PW FW.
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