Dry anaerobic digestion of differently sorted organic municipal solid waste: a full-scale experience

2006 ◽  
Vol 53 (8) ◽  
pp. 23-32 ◽  
Author(s):  
D. Bolzonella ◽  
P. Pavan ◽  
S. Mace ◽  
F. Cecchi
Keyword(s):  
Anaerobic Digestion ◽  
Methane Production ◽  
Organic Wastes ◽  
Full Scale ◽  
Solid Wastes ◽  
Municipal Solid Wastes ◽  
Operational Conditions ◽  
Organic Solid ◽  
Green Certificates ◽  
Dry Anaerobic Digestion

This paper presents a comparison of dry anaerobic digestion reactors fed with differently sorted municipal organic solid wastes. One reactor was fed with source sorted organic wastes and a second reactor was fed with mixed organic wastes consisting of grey wastes, mechanically selected municipal solid wastes and sludge. The two reactors utilised the same process (Valorga) and operational conditions at full scale. The results of the study emphasise the influence of the kind of treated material on the process performances, especially in terms of biogas and methane production, thus, energy reclamation. The reactor treating the source sorted organic waste and the reactor treating the mixed organic wastes generated some 200 m3 and 60 m3 of biogas per ton of waste treated, respectively, while the specific methane production was some 0.40 and 0.13 m3CH4/kgTVS, respectively. The mass balance and the final fate of the digested material from the two reactors were also clearly different. As for the costs, these were some 29 € per ton of treated waste (50% for personnel) and 53 €/ton for disposing of the rejected materials. Incomes were some 100 €/ton (on average) and an other 15 €/ton came from green certificates. The initial investment was 16 million Euros.

scholarly journals Comparative analysis of common full scale reactors for dry anaerobic digestion process

2019 ◽  
Vol 83 ◽  
pp. 01011 ◽  
Author(s):  
Khaled Elsharkawy ◽  
Mohamed Elsamadony ◽  
Hafez Afify
Keyword(s):  
Anaerobic Digestion ◽  
Solid Wastes ◽  
The Other ◽  
Operational Conditions ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Organic Solid ◽  
The Common ◽  
Organic Solid Wastes ◽  
Dry Anaerobic Digestion

Organic solid wastes are produced with large amount wherever there are human activities. However, improper treated organic wastes made them as sources of diseases. On the other hand, these fractions contain nutrients and energy, so they have also valuable resources. As a result, exploring their potential as an energy source can be accomplish via anaerobic digestion process, in which, organics converted into hydrogen, methane and/or ethanol. Therefore, this manuscript introduces an overview of the common applied types of reactor that can handle these types of wastes in their solid state and recover them in term of biogas, as well as, stabilize the produced digestate to bio-fertilizers by compositing approach. A comparison also listed to demonstrate the optimum operational conditions and expected amount of biogas from each type.

scholarly journals Thermophilic Co-Digestion of the Organic Fraction of Municipal Solid Wastes—The Influence of Food Industry Wastes Addition on Biogas Production in Full-Scale Operation

Molecules ◽  
2018 ◽  
Vol 23 (12) ◽  
pp. 3146 ◽  
Author(s):  
Przemysław Seruga ◽  
Małgorzata Krzywonos ◽  
Marta Wilk
Keyword(s):  
Anaerobic Digestion ◽  
Biogas Production ◽  
Full Scale ◽  
Solid Wastes ◽  
Process Efficiency ◽  
Electricity Production ◽  
Organic Fraction ◽  
Municipal Solid Wastes ◽  
Biogas Yield ◽  
Yield Increase

Anaerobic digestion (AD) has been used widely as a form of energy recovery by biogas production from the organic fraction of municipal solid wastes (OFMSW). The aim of this study was to evaluate the effect of the introduction of co-substrates (restaurant wastes, corn whole stillage, effluents from the cleaning of chocolate transportation tanks) on the thermophilic anaerobic digestion process of the mechanically separated organic fraction of municipal solid wastes in a full-scale mechanical-biological treatment (MBT) plant. Based on the results, it can be seen that co-digestion might bring benefits and process efficiency improvement, compared to mono-substrate digestion. The 15% addition of effluents from the cleaning of chocolate transportation tanks resulted in an increase in biogas yield by 31.6%, followed by a 68.5 kWh electricity production possibility. The introduction of 10% corn stillage as the feedstock resulted in a biogas yield increase by 27.0%. The 5% addition of restaurant wastes contributed to a biogas yield increase by 21.8%. The introduction of additional raw materials, in fixed proportions in relation to the basic substrate, increases biogas yield compared to substrates with a lower content of organic matter. In regard to substrates with high organic loads, such as restaurant waste, it allows them to be digested. Therefore, determining the proportion of different feedstocks to achieve the highest efficiency with stability is necessary.

An investigation for improving dry anaerobic digestion of municipal solid wastes by adding biochar derived from gasification of wood pellets

2021 ◽  
Author(s):  
Ahmad Reza Salehiyoun ◽  
Hamid Zilouei ◽  
Mohammad Safari ◽  
Francesco Di Maria ◽  
Seyed Hashem Samadi ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Solid Wastes ◽  
Wood Pellets ◽  
Municipal Solid Wastes ◽  
Dry Anaerobic Digestion

An Investigation for Improving Dry Anaerobic Digestion of Municipal Solid Wastes by Adding Biochar Derived from Gasification of Wood Pellets

2021 ◽  
Author(s):  
Ahmad Reza Salehiyoun ◽  
Hamid Zilouei ◽  
Mohammad Safari ◽  
Francesco Di Maria ◽  
Seyed Hashem Samadi ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Solid Wastes ◽  
Wood Pellets ◽  
Municipal Solid Wastes ◽  
Dry Anaerobic Digestion

Environmental aspects of the anaerobic digestion of the organic fraction of municipal solid wastes and of solid agricultural wastes

2005 ◽  
Vol 52 (1-2) ◽  
pp. 203-208 ◽  
Author(s):  
W. Edelmann ◽  
U. Baier ◽  
H. Engeli
Keyword(s):  
Anaerobic Digestion ◽  
Waste Treatment ◽  
Solid Wastes ◽  
Gaseous Emissions ◽  
Negative Effects ◽  
Municipal Solid Wastes ◽  
Life Cycle Assessments ◽  
Organic Solid ◽  
Biogenic Waste

In order to obtain more detailed information for better decision making in future biogenic waste treatment, different processes to treat biogenic wastes in plants with a treatment capacity of 10,000 tons of organic household wastes per year as well as agricultural codigestion plants were compared by life cycle assessments (LCA). With the tool EcoIndicator, anaerobic digestion is shown to be advantageous as compared to composting, incineration or a combination of digestion and composting, mainly because of a better energy balance. The management of the liquid manure in agricultural codigestion of organic solid wastes causes increased gaseous emissions, which have negative effects on the LCA, however. It is recommended to cover the slurry pit and to use an improved manure management in order to compensate for the additional gaseous emissions. In the LCAs, the quality of the digester output could only be taken into account to a small extent; the reasons are discussed.

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