Enhancing Methane Yield in Dry Anaerobic Digestion from Municipal Solid Waste Through the Intermittent and Low-Strength Ultrasonic Technology

2021 ◽  
Author(s):  
Weiwei Wang ◽  
Ying Guo ◽  
Feng Zhen ◽  
Zhi Wang ◽  
Xing Tao ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Methane Yield ◽  
Ultrasonic Technology ◽  
Low Strength ◽  
Dry Anaerobic Digestion

scholarly journals Waste to Energy: A Focus on the Impact of Substrate Type in Biogas Production

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1224
Author(s):  
Nwabunwanne Nwokolo ◽  
Patrick Mukumba ◽  
KeChrist Obileke ◽  
Matthew Enebe
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Industrial Waste ◽  
Animal Manure ◽  
Nutritional Composition ◽  
Organic Wastes ◽  
Waste To Energy ◽  
Methane Yield ◽  
Substrate Type

Anaerobic digestion is an efficient technology for a sustainable conversion of various organic wastes such as animal manure, municipal solid waste, agricultural residues and industrial waste into biogas. This technology offers a unique set of benefits, some of which include a good waste management technique, enhancement in the ecology of rural areas, improvement in health through a decrease of pathogens and optimization of the energy consumption of communities. The biogas produced through anaerobic digestion varies in composition, but it consists mainly of carbon dioxide methane together with a low quantity of trace gases. The variation in biogas composition are dependent on some factors namely the substrate type being digested, pH, operating temperature, organic loading rate, hydraulic retention time and digester design. However, the type of substrate used is of greater interest due to the direct dependency of microorganism activities on the nutritional composition of the substrate. Therefore, the aim of this review study is to provide a detailed analysis of the various types of organic wastes that have been used as a substrate for the sustainable production of biogas. Biogas formation from various substrates reported in the literature were investigated, an analysis and characterization of these substrates provided the pro and cons associated with each substrate. The findings obtained showed that the methane yield for all animal manure varied from 157 to 500 mL/gVS with goat and pig manure superseding the other animal manure whereas lignocellulose biomass varied from 160 to 212 mL/gVS. In addition, organic municipal solid waste and industrial waste showed methane yield in the ranges of 143–516 mL/gVS and 25–429 mL/gVS respectively. These variations in methane yield are primarily attributed to the nutritional composition of the various substrates.

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.

Air Pollutant Emission Rates for Dry Anaerobic Digestion and Composting of Organic Municipal Solid Waste

2020 ◽  
Vol 54 (24) ◽  
pp. 16097-16107
Author(s):  
Chelsea V. Preble ◽  
Sharon S. Chen ◽  
Toshifumi Hotchi ◽  
Michael D. Sohn ◽  
Randy L. Maddalena ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Air Pollutant ◽  
Pollutant Emission ◽  
Emission Rates ◽  
Dry Anaerobic Digestion

Rheology of sludge from semi‐dry anaerobic digestion of municipal solid waste

1991 ◽  
Vol 12 (10) ◽  
pp. 897-905 ◽  
Author(s):  
Paolo Battistoni ◽  
Gabriele Pava ◽  
Franco Cecchi ◽  
Paolo Pavan
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Dry Anaerobic Digestion
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