Demonstration-Scale Evaluation of a Novel High-Solids Anaerobic Digestion Process for Converting Organic Wastes to Fuel Gas and Compost

1998 ◽  
pp. 687-695
Author(s):  
Christopher J. Rivard ◽  
Brian W. Duff ◽  
James H. Dickow ◽  
Carlton C. Wiles ◽  
Nicholas J. Nagle ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Organic Wastes ◽  
High Solids ◽  
Fuel Gas ◽  
Scale Evaluation ◽  
Anaerobic Digestion Process ◽  
Digestion Process

Demonstration-scale evaluation of a novel high-solids anaerobic digestion process for converting organic wastes to fuel gas and compost

1998 ◽  
Vol 70-72 (1) ◽  
pp. 687-695 ◽  
Author(s):  
Christopher J. Rivard ◽  
Brian W. Duff ◽  
James H. Dickow ◽  
Carlton C. Wiles ◽  
Nicholas J. Nagle ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Organic Wastes ◽  
High Solids ◽  
Fuel Gas ◽  
Scale Evaluation ◽  
Anaerobic Digestion Process ◽  
Digestion Process

scholarly journals Historical Perspective of the Addition of Magnetic Nanoparticles Into Anaerobic Digesters (2014-2021)

2021 ◽  
Vol 3 ◽  
Author(s):  
Eudald Casals ◽  
Raquel Barrena ◽  
Edgar Gonzalez ◽  
Xavier Font ◽  
Antoni Sánchez ◽  
...  
Keyword(s):  
Organic Matter ◽  
Magnetic Nanoparticles ◽  
Anaerobic Digestion ◽  
Historical Perspective ◽  
Research Field ◽  
Organic Wastes ◽  
Anaerobic Digesters ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Iron Based

The addition of magnetic nanoparticles to batch anaerobic digestion was first reported in 2014. Afterwards, the number of works dealing with this subject has been increasing year by year. The discovery of the enhancement of anaerobic digestion by adding iron-based nanoparticles has created a multidisciplinary emerging research field. As a consequence, in the last years, great efforts have been made to understand the enhancement mechanisms by which magnetic nanoparticles (NPs) addition enhances the anaerobic digestion process of numerous organic wastes. Some hypotheses point to the dissolution of iron as essential iron for anaerobic digestion development, and the state of oxidation of iron NPs that can reduce organic matter to methane. The evolution and trends of this novel topic are discussed in this manuscript. Perspectives on the needed works on this topic are also presented.

scholarly journals Research advances in dry anaerobic digestion process of solid organic wastes

2011 ◽  
Vol 10 (65) ◽  
pp. 14242-14253 ◽  
Author(s):  
Kumar Jha Ajay ◽  
Li Jianzheng ◽  
Nies Loring ◽  
Zhang Liguo
Keyword(s):  
Anaerobic Digestion ◽  
Organic Wastes ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Dry Anaerobic Digestion

scholarly journals High-Solids Anaerobic Digestion Followed by Ultrasonication of Digestate and Wet-Type Anaerobic Digestion for Enhancing Methane Yield from OFMSW

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 555 ◽  
Author(s):  
Bappi Chowdhury ◽  
Sarmad Bilal Magsi ◽  
Hok Nam Joey Ting ◽  
Bipro Ranjan Dhar
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Specific Energy ◽  
High Solids ◽  
Organic Fraction ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Energy Inputs ◽  
Volatile Solids

High-solids anaerobic digestion of organic fraction of municipal solid waste often shows inefficient biomethane recovery due to mass transfer limitations. Consequently, this study presents a two-stage anaerobic digestion process combining high-solids anaerobic digestion followed by ultrasonication of digestate and wet-type anaerobic digestion for effective biomethane recovery from the organic fraction of municipal solid waste. The high-solids anaerobic digestion yielded methane production of 210 L CH4/kg volatile solids (VS). The digestate from the high-solids anaerobic digestion process was ultrasonicated at three different specific energy inputs (1000, 2500, and 5000 kJ/kg total solids (TS)). The increases in the soluble chemical oxygen demand (SCOD) concentrations (8%–32%) and volatile solids (VS) removal efficiencies (3.5%–10%) at different specific energy inputs were linearly correlated (R2 = 0.9356). Thus, ultrasonication led to the solubilization of particulate organics and released soluble organic matters. All ultrasonicated digestate samples showed significantly higher biomethane yields than that observed for the untreated digestate samples. The highest methane yield of 132 L CH4/kg VS was observed for a specific energy input of 5000 kJ/kg TS, which was 1.94 times higher than the control (68 L CH4/kg VS). Although specific energy inputs of 1000 kJ/kg TS and 2500 kJ/kg TS showed comparable methane yields (113–114 L CH4/kg VS), they were ~1.67 times higher than the control. Overall, our results suggest that an integrated system of high-solids and wet-type anaerobic digestion with pre-ultrasonication of digestate has the potential to provide a technically viable solution to enhance biomethane recovery from the organic fraction of municipal solid waste.

scholarly journals Biogas Production from Organic wastes and Iron as an Additive – A Short Review

2022 ◽  
Author(s):  
Muhammad Muddasar
Keyword(s):  
Anaerobic Digestion ◽  
Reduction Rate ◽  
Green Energy ◽  
Organic Wastes ◽  
World Population ◽  
Biogas Yield ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
The World ◽  
Iron Based

The world is facing a serious energy crisis and environmental pollution problems due to a sharp increase in the world population. Bioenergy is an eminent solution to these problems. Anaerobic digestion is a green energy technology used worldwide for the conversion of organic waste to biogas. It is reported that organic wastes are hard to digest and need some technical improvement in the anaerobic digestion process to improve biogas yield. Iron-based additives, due to their electron acceptance and donation capabilities, have been emphasized as being exceptional in improving anaerobic digestion process efficiency amongst all other enhancement options. This study reviews the major available types of iron-based additives, their characteristics, and their preparation methods. The preferred iron-based additive that has a significant effect on the enhancement of biogas yield is also discussed. The use of iron-based additives in the anaerobic digestion process with varying dosages and their impact on the biogas generation rate is also being studied. Substrates, operating parameters, and types of anaerobic digesters used in recent studies while researching the effects of iron-based additives are also part of this review. Lastly, this study also confirms that iron-based additives have a significant effect on the reduction rate of the volatile suspended solids, methane content, biogas yield, and volatile fatty acids.

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