title: Evaluation of batch anaerobic co-digestion of palm pressed fiber and cattle manure under mesophilic conditions.
abstract: Palm pressed fiber (PPF) and cattle manure (CM) are the waste which can be managed properly by anaerobic co-digestion. The biogas production in co-digested PPF and CM at three volatile solids (VS) ratios of 3:1, 1:1, and 1:3 was investigated in a series of batch experiments at an organic loading rate of 30.0 g VS/L under mesophilic (37±1°C) conditions. The highest daily biogas yield of PPF and CM only, was 90.0 mL/g VS(added) at day 12 and 23.4 mL/g VS(added) at day 7. For co-digestion of PPF/CM at mixing ratios of 3:1, 1:1 and 1:3, there were 93.6 mL/g VS(added) at day 11, 86.8 and 26.4 mL/g VS(added) at day 8. VS removal rate for PPF, CM, and co-digestion at mixing ratio of 3:1, 1:1, and 1:3 were 91.1%, 86.0% and 71.0%, respectively. The anaerobic digestion of PPF and CM and their co-digestion systems were stable in operation with low range of volatile fatty acids (VFA)/TIC (total inorganic carbon) of (0.035-0.091). The main volatile fatty acids were propionic, and iso-butyric acids for PPF, iso-butyric and n-butyric acids for CM. The VFAs and ammonium inhibition were not occurred. The modified Gompertz model can be used to perform a better prediction with a lower difference between the measured and predicted biogas yields. A VS ratio of 3:1 is recommended for practice.
authors.affiliation: College of Engineering, China Agricultural University, Key Laboratory, Ministry of Agriculture, Beijing 100083, People's Republic of China; Institute Superior of Agronomy and Veterinary of Faranah (ISAV/F), Faranah 131, Guinea.
authors.forename: Hamidou
authors.initials: H
authors.lastname: Bah
authors.affiliation: College of Engineering, China Agricultural University, Key Laboratory, Ministry of Agriculture, Beijing 100083, People's Republic of China; College of Agriculture and Biotechnology, China Agricultural University, Beijing 100093, People's Republic of China.
authors.forename: Wanqin
authors.initials: W
authors.lastname: Zhang
authors.affiliation: College of Engineering, China Agricultural University, Key Laboratory, Ministry of Agriculture, Beijing 100083, People's Republic of China. Electronic address: wushubiao@gmail.com.
authors.forename: Shubiao
authors.initials: S
authors.lastname: Wu
authors.affiliation: College of Agriculture and Biotechnology, China Agricultural University, Beijing 100093, People's Republic of China.
authors.forename: Dandan
authors.initials: D
authors.lastname: Qi
authors.affiliation: College of Engineering, China Agricultural University, Key Laboratory, Ministry of Agriculture, Beijing 100083, People's Republic of China; College of Agriculture and Environmental Sciences, Makerere University, Kampala 256, Uganda.
authors.forename: Simon
authors.initials: S
authors.lastname: Kizito
authors.affiliation: College of Engineering, China Agricultural University, Key Laboratory, Ministry of Agriculture, Beijing 100083, People's Republic of China.
authors.forename: Renjie
authors.initials: R
authors.lastname: Dong
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D028023:Arecaceae / Q000737:chemistry*; D056804:Biofuels / Q000032:analysis*; D019149:Bioreactors; D002417:Cattle; D007220:Industrial Waste / Q000032:analysis*; D008372:Manure / Q000032:analysis*; D008697:Methane / Q000096:biosynthesis*; D008962:Models, Theoretical; D012037:Refuse Disposal / Q000379:methods*
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D008372:Manure; D008697:Methane
keywords: Anaerobic co-digestion; Biogas production; Cattle manure; Kinetic model; Palm pressed fiber