Anaerobic codigestion of the mechanically sorted organic fraction of a municipal solid waste with cattle manure in packed microcosms under batch conditions

2008 ◽  
Vol 58 (9) ◽  
pp. 1735-1742 ◽  
Author(s):  
L. Bertin ◽  
D. Todaro ◽  
C. Bettini ◽  
F. Fava
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Suspended Solids ◽  
Cattle Manure ◽  
Lag Phase ◽  
Organic Fraction ◽  
Biochemical Methane Potential ◽  
Ch4 Production ◽  
Anaerobic Codigestion ◽  
Methane Potential

Packed microcosms, consisting of 0.6 L-flask filled with tire chips (TC, a non-cost-recyclable non-biodegradable material) or ceramic cubes, were employed in the wet batch mesophilic anaerobic codigestion of a mechanically sorted organic fraction of a municipal solid waste with cattle manure. Two different waste mixtures were digested within four successive batch experiments, performed by collecting the digested waste and by refilling each microcosm with the same experimental mixture. Methane production yields related to the first experiment were comparable to those of non-packed identically developed microcosms, while they significantly grew during all the following experiences. No CH4-production lag-phase was observed since the second batch experiment. Similar results were obtained for both packing materials: however, the highest methane yields were achieved within bioreactors packed with TC in the presence of a mixture in which the volatile suspended solids (VSS) provided by the municipal waste represented the 55% of the total ones. Under such condition, a methane yield corresponding to the biochemical methane potential (BMP) calculated through a 6-month experiment with non-packed microcosms (176 ml/gVS) was attained in about 1/4 of the time. Importantly, the BMP can significantly grow up as a consequence of the approach described in this study.

Biochemical methane potential of water hyacinth and the organic fraction of municipal solid waste using leachate from Mexico City’s Bordo Poniente composting plant as inoculum

Fuel ◽  
2021 ◽  
Vol 285 ◽  
pp. 119132
Author(s):  
L.A. Romero De León ◽  
P. Quinto Diez ◽  
L.R. Tovar Gálvez ◽  
L. Alvarado Perea ◽  
C.A. López Barragán ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Water Hyacinth ◽  
Organic Fraction ◽  
Biochemical Methane Potential ◽  
Methane Potential

scholarly journals Influence of the Preliminary Storage on Methane Yield of Anaerobic Digestion of the Organic Fraction of Municipal Solid Waste

Processes ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 2017
Author(s):  
Domenica Pangallo ◽  
Altea Pedullà ◽  
Demetrio Antonio Zema ◽  
Paolo S. Calabrò
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Storage Time ◽  
Logistic Models ◽  
Methane Yield ◽  
Organic Fraction ◽  
Biochemical Methane Potential ◽  
First Order ◽  
Methane Potential

Anaerobic digestion (AD) is a suitable management option for the energy valorization of many wastes, including the organic fraction of municipal solid waste (OFMSW). However, in some cases, long storage after the separate collection of this waste is required for management reasons, especially when the amount of waste to be treated temporarily exceeds the capacity of available AD plants. This study evaluates the biochemical methane potential (BMP) of the OFMSW after preliminary storage of 2, 6, and 10 days, in order to assess whether they are still suitable for AD or not. Moreover, the accuracy of three kinetic models (first order, Gompertz, and logistic models) in estimating the methane yield of stored OFMSW is tested. The resulting methane yield was between about 500 and 650 NmL·gVS−1 and slightly increased with the increase of the storage time after collection. Overall, this study has demonstrated that storage of OFMSW, when the collected amount of solid waste exceeds the treatment capacity of AD plants, a storage time up to 10 days does not impact the methane yield of the process.

scholarly journals Treatment of the Supernatant of Anaerobically Digested Organic Fraction of Municipal Solid Waste in a Demo-Scale Mesophilic External Anaerobic Membrane Bioreactor

2021 ◽  
Vol 9 ◽  
Author(s):  
Antonio Giménez-Lorang ◽  
José Ramón Vázquez-Padín ◽  
Cecilia Dorado-Barragán ◽  
Gloria Sánchez-Santos ◽  
Sandra Vila-Armadas ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Membrane Bioreactor ◽  
Suspended Solids ◽  
Stable Process ◽  
Gas Production ◽  
Clear Correlation ◽  
Process Performance ◽  
Organic Fraction ◽  
Anaerobic Membrane Bioreactor

Conventional aerobic biological treatments of digested organic fraction of municipal solid waste (OFMSW) slurries–usually conventional activated sludge or aerobic membrane bioreactor (AeMBR)–are inefficient in terms of energy and economically costly because of the high aeration requirements and the high amount of produced sludge. In this study, the supernatant obtained after the anaerobic digestion of OFMSW was treated in a mesophilic demo-scale anaerobic membrane bioreactor (AnMBR) at cross flow velocities (CFVs) between 1 and 3.5 m⋅s–1. The aim was to determine the process performance of the system with an external ultrafiltration unit, in terms of organic matter removal and sludge filterability. In previous anaerobic continuous stirred tank reactor (CSTR) tests, without ultrafiltration, specific gas production between 40 and 83 NL CH4⋅kg–1 chemical oxygen demand (COD) fed and removals in the range of 10–20% total COD (tCOD) or 59–77% soluble COD (sCOD) were obtained, for organic loading rates (OLR) between 1.7 and 4.4 kg COD⋅m–3reactor d–1. Data helped to identify a simplified model with the aim of understanding and expressing the process performance. Methane content in biogas was in the range of 74–77% v:v. In the AnMBR configuration, the COD removal has been in the ranges of 15.6–38.5 and 61.3–70.4% for total and sCOD, respectively, with a positive correlation between solids retention time (SRT, ranging from 7.3 to 24.3 days) and tCOD removal. The constant used in the model expressing inhibition, attributable to the high nitrogen content (3.6 ± 1.0 g N-NH4+⋅L–1), indicated that this inhibition decreased when SRT increased, explaining values measured for volatile fatty acids concentration, which decreased when SRT increased and OLR, measured per unit of volatile suspended solids in the reactor, decreased. The alkalinity was high enough to allow a stable process throughout the experiments. Constant CFV operation resulted in excessive fouling and sudden trans-membrane pressure (TMP) increases. Nevertheless, an ultrafiltration regime based on alternation of CFV (20 min with a certain CFVi and then 5 min at CFVi + 1 m⋅s–1) allowed the membranes to filter at a flux (standardized at 20°C temperature) ranging from 2.8 to 7.3 L⋅m–2⋅h–1, over 331 days of operation, even at very high suspended solids concentrations (>30 g total suspended solids⋅L–1) in the reactor sludge. This flux range confirms that fouling is the main issue that can limit the spread of AnMBR potential for the studied stream. No clear correlation was found between CFV or SRT vs. fouling rate, in terms of either TMP⋅time–1 or permeability⋅time–1. As part of the demo-scale study, other operational limitations were observed: irreversible fouling, scaling (in the form of struvite deposition), ragging, and sludging. Because ragging and sludging were also observed in the existing AeMBR, it can be stated that both are attributable to the stream and to the difficulty of removing existing fibers. All the mentioned phenomena could have contributed to the high data dispersion of experimental results.

scholarly journals Biochemical Methane Potential of Swine Slaughter Waste, Swine Slurry, and Its Codigestion Effect

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7103
Author(s):  
Anriansyah Renggaman ◽  
Hong Lim Choi ◽  
Sartika Indah Amalia Sudiarto ◽  
Andi Febrisiantosa ◽  
Dong Hyoen Ahn ◽  
...  
Keyword(s):  
Large Scale ◽  
Dry Weight ◽  
Animal Manure ◽  
Lag Phase ◽  
Swine Slurry ◽  
Ch4 Production ◽  
Long Duration ◽  
Anaerobic Codigestion ◽  
Substrate To Inoculum Ratio ◽  
Methane Potential

The codigestion of slaughter waste with animal manure can improve its methane yield, and digestion parameters; however, limited studies are available for the effectiveness of anaerobic codigestion using swine slaughter waste (SSW) and swine slurry (SS). Hence, this study was conducted to determine the characteristics of SSW and the effect of anaerobic codigestion with (SS) and explored the potential of CH4 production (Mmax), the lag phase period (λ), and effective digestion time (Teff). SSW contains fat and protein contents of 54% and 30% dry weight within 18.2% of solid matters, whereas SS showed only 6% and 28% within 4.1% of solid matters, respectively. During sole anaerobic digestion, SSW produced a high Mmax (711 Nml CH4/g VSadded) but had a long duration λ (~9 days); whereas SS produced a low Mmax (516 Nml CH4/g VSadded) but had a shorter duration λ (1 day). Codigestion increased the Mmax from 22–84% with no significant Teff compared to sole SS digestion. However, the low Mmax of SS and high Mmax of SSW, resulted in a 7–32% decrease in Mmax at codigestion compared to SSW sole digestion. Codigestion improved the digestion efficiency as it reduced λ (3.3–8.5 days shorter) and Teff (6.5–9.1 days faster) compared to SSW sole digestion. The substrate-to-inoculum ratio of 0.5 was better than 1; the volatile solid and micronutrient availability may be attributed to improved digestion. These results can be used for the better management of SSW and SS for bio-energy production on a large scale.

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