Degradation efficiency of agricultural biogas plants – A full-scale study

Comparison of various post-treatments for recovering methane from agricultural digestate

“…Methane potentials obtained both for DIG and SS-DIG are in accordance with previous literature data, as reported in Table 3. Results were also found in accordance with those of Ruile et al [10] who investigated the residual methane potential of whole digestate from 21 fullscale digesters and they reported methane yields varying from 24 to 126 NmL CH 4 /g VS. Conversely, Menardo et al [11] reported lower methane potential for whole digestate, ranging from 3 to 34 NmL CH 4 /g VS, compared to those noticed in this study. However, as stated by the authors, the low methane yields could be partially explained by the inhibitory effect on the digestion process from the high ammonia concentrations (higher than 2.5 g/L), recognized as inhibitory for the methanogenic archae [34,35].…”

“…The residual methane yields were also found to be closely correlated to other reactor parameters, such as the Hydraulitic Retention Time (HRT) and Organic Loading Rate (OLR) [10,11].…”

Renewable energy from biogas with reduced carbon dioxide footprint: Implications of applying different plant configurations and operating pressures

“…Biogas yields from several different full-scale biogas plants have been provided by Ruile et al [109] and IEO [110]. The simulations of the biogas plant model and data from full-scale biogas plants involving various typical feedstocks are compared in Fig.…”

Accelerated methanogenesis from effluents of hydrogen-producing stage in anaerobic digestion by mixed cultures enriched with acetate and nano-sized magnetite particles

“…However, low efficiency and long retention times (30-200 days), which usually occur in traditional one-stage AD, prevent its practical applicability (Kwietniewska and Tys, 2014;Ruile et al, 2015). In tackling these questions, researchers have focused on development of a two-stage AD to separate acidogenesis (hydrogenproducing stage) and methanogenesis (methane-producing stage) (Merlino et al, 2013;Yang et al, 2011).…”