Anaerobic membrane reactor: Biomethane from chicken manure and high-quality effluent

Abstract

Chicken manure was treated in a pilot scale reactor anaerobic membrane bioreactor constituted by a completely mixed reactor combined with an ultrafiltration tube-shaped membrane in a side-stream configuration. The process operated under mesophilic condition and the inhibition of high concentration of ammonia was avoided using an ammonia stripping system. The experimental plan included a preliminary evaluation, where organic loading rates between 1.0 and 7.6 kgVS/m3/day were tested. The organic load higher than 4 kgVS/m3/d caused the accumulation of volatile fatty acids and process instability. Application of the ammonia stripping was also evaluated. The best performances were achieved using a retention time of 21 days, an organic load between 1.4 and 2.0 kgVS/m3/d, and the recirculation of stripped permeate. Reduction of the ammonia permeate content by 90% through stripping and utilization of a mixture of chicken manure/water/permeate in a ratio of 0.22/0.72/0.72 w/w led to a specific biogas production of 0.59 m3biogas/kgVS and methane content of 66e69%. The ammonia thus removed can be recovered by sulphuric acid treatment as ammonium sulphate, which can be used as a fertilizer. The proposed configuration allowed satisfactory biogas production with appropriate methane percentages, recovery of ammonium sulphate, and a high-quality effluent.

Evaluating the Effectiveness of Adding Chicken Manure in the Anaerobic Mesophilic Codigestion of Sewage Sludge and Wine Distillery Wastewater: Kinetic Modeling and Economic Approach

“…The characteristics of the raw cosubstrates are shown in Table 1 and fall within the usual range reported in the literature. 4,18,28 Table 2 shows the average values of the parameters at the beginning and end of the BMP tests. TCOD, TS, and VS NSCOD is estimated by subtracting the SCOD from the TCOD.…”

Managing the Effluents of Anaerobic Fermentations by Bioprocess Schemes Involving Membrane Bioreactors and Bio-Electrochemical Systems: A Mini-Review

“…Actually, one particular application field could be the removal of ammonium nitrogen (NH 4 -N) so as to (i) avoid the risk of process inhibition, (ii) adjust the permeate composition, and (iii) accomplish resource recovery. Physico-chemical treatment of the permeate from the AnMBR was implemented by Busato et al [23] via combined air stripping and sulfuric acid dosing to obtain ammonium sulfate. Moreover, hydrophobic gas permeation membranes submerged into the fermentation liquor of AnMBR were investigated in the work of Bayrakdar et al [24].…”

Agricultural Biogas—An Important Element in the Circular and Low-Carbon Development in Poland

“…The problem with the use of poultry litter is from the high concentration of ammonium nitrogen, which can cause issues in the operation of a biogas plant. It can be solved using co-digestion [72], which requires new technological solutions [73][74][75][76][77]. Biogas plants have been perfected for decades, and yet the process of anaerobic digestion and biogas production from poultry litter is an important challenge from a research, economic, and environmental standpoint.…”