High-solids anaerobic digestion of organic fraction of municipal solid waste: effects of feedstock to inoculum ratio and percolate recirculation time

2021 ◽  
pp. 125335
Author(s):  
Wafa Dastyar ◽  
Seyed Mohammad Mirsoleimani Azizi ◽  
Mayank Dhadwal ◽  
Bipro Ranjan Dhar
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
High Solids ◽  
Organic Fraction

Transitions of microbial communities in the solid and liquid phases during high-solids anaerobic digestion of organic fraction of municipal solid waste

2020 ◽  
Vol 317 ◽  
pp. 123951
Author(s):  
Hok Nam Joey Ting ◽  
Long Lin ◽  
Raul Bello Cruz ◽  
Bappi Chowdhury ◽  
Ibrahim Karidio ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Microbial Communities ◽  
Solid Waste ◽  
High Solids ◽  
Organic Fraction ◽  
Liquid Phases

scholarly journals Evaluating inhibition conditions in high-solids anaerobic digestion of organic fraction of municipal solid waste

2010 ◽  
Vol 101 (14) ◽  
pp. 5728-5732 ◽  
Author(s):  
Andrea Schievano ◽  
Giuliana D’Imporzano ◽  
Luca Malagutti ◽  
Emilio Fragali ◽  
Gabriella Ruboni ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
High Solids ◽  
Organic Fraction

scholarly journals Modelling non-ideal bio-physical-chemical effects on high-solids anaerobic digestion of the organic fraction of municipal solid waste

2019 ◽  
Vol 238 ◽  
pp. 408-419 ◽  
Author(s):  
Vicente Pastor-Poquet ◽  
Stefano Papirio ◽  
Jean-Philippe Steyer ◽  
Eric Trably ◽  
Renaud Escudié ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
High Solids ◽  
Organic Fraction ◽  
Chemical Effects ◽  
Physical Chemical

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.

Strategies for the anaerobic digestion of the organic fraction of municipal solid waste: an overview

2006 ◽  
Vol 53 (8) ◽  
pp. 7-22 ◽  
Author(s):  
H. Hartmann ◽  
B.K. Ahring
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Biogas Production ◽  
C:N Ratio ◽  
Cost Benefit ◽  
Single Stage ◽  
High Solids ◽  
Organic Fraction ◽  
Multi Stage

Different process strategies for anaerobic digestion of the organic fraction of municipal solid waste (OFMSW) are reviewed weighing high-solids versus low-solids, mesophilic versus thermophilic and single-stage versus multi-stage processes. The influence of different waste characteristics such as composition of biodegradable fractions, C:N ratio and particle size is described. Generally, source sorting of OFMSW and a high content of food waste leads to higher biogas yields than the use of mechanically sorted OFMSW. Thermophilic processes are more efficient than mesophilic processes in terms of higher biogas yields at different organic loading rates (OLR). Highest biogas yields are achieved by means of wet thermophilic processes at OLRs lower than 6 kg-VS·m−3 d−1. High-solids processes appear to be relatively more efficient when OLRs higher than 6 kg-VS·m−3 d−1 are applied. Multi-stage systems show in some investigations a higher reduction of recalcitrant organic matter compared to single-stage systems, but they are seldom applied in full-scale. An extended cost-benefit calculation shows that the highest overall benefit of the process is achieved at an OLR that is lower and a hydraulic retention time (HRT) that is longer than those values of OLR and HRT, at which the highest biogas production is achieved.

Environmental impact assessment of organic fraction of municipal solid waste treatment by anaerobic digestion in Sri Lanka

2021 ◽  
pp. 0734242X2110134
Author(s):  
Rasangika Thathsaranee Weligama Thuppahige ◽  
Sandhya Babel
Keyword(s):  
Anaerobic Digestion ◽  
Sri Lanka ◽  
Environmental Impact ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Resource Scarcity ◽  
Policy Formation ◽  
Ozone Formation ◽  
Organic Fraction ◽  
Management Options

The management of organic fraction of municipal solid waste (OFMSW) has continued to be a significant challenge in Sri Lanka. Anaerobic digestion is one of the management options of OFMSW. However, it generates unavoidable environmental impacts that should be addressed. The present study focuses to assess the environmental impact of a full-scale anaerobic digestion plant in Sri Lanka from a life cycle perspective. The inventory data were obtained from direct interviews and field measurements. Environmental burdens were found to be in terms of global warming potential (230 kg CO2 eq) ozone formation on human health (6.15 × 10−6 kg NO x eq), freshwater eutrophication (2.92 × 10−3 kg P eq), freshwater ecotoxicity (9.27 × 10−5 kg 1,4 DCB eq), human carcinogenic toxicity (3.98 × 10−4 kg 1,4 DCB eq), land use (1.32 × 10−4 m2 a crop eq) and water consumption (2.23 × 10−2 m3). The stratospheric ozone depletion, fine particulate matter formation, ozone formation on terrestrial ecosystems, terrestrial acidification, marine eutrophication, ecotoxicity (terrestrial and marine), human non-carcinogenic toxicity, mineral resource scarcity and fossil resource scarcity, were avoided due to electricity production. Results show that the direct gaseous emissions and digestate generation should be addressed in order to reduce the burdens from the anaerobic digestion plant. Finally, the results of the study could help in policy formation and decision-making in selecting future waste management systems in Sri Lanka.

Effect of Leachate Spraying Intensity on High-Solid Anaerobic Digestion of Corn Stover and Organic Fraction of Municipal Solid Waste

2019 ◽  
Vol 11 (7) ◽  
pp. 3293-3301
Author(s):  
Mingyu Qian ◽  
Ye Zhou ◽  
Yixin Zhang ◽  
Zhenxin Wang ◽  
Ruihua Li ◽  
...  
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Corn Stover ◽  
Organic Fraction ◽  
High Solid
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