scholarly journals Correction to: Study of biological and thermo-chemical pretreatment of organic fraction of municipal solid waste for enhanced biogas yield

2019 ◽  
Vol 27 (22) ◽  
pp. 27305-27306
Author(s):  
Renu Bala ◽  
Monoj Kumar Mondal
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Chemical Pretreatment ◽  
Organic Fraction ◽  
Biogas Yield

scholarly journals Management strategies for anaerobic digestate of organic fraction of municipal solid waste: Current status and future prospects

2019 ◽  
Vol 37 (1_suppl) ◽  
pp. 27-39 ◽  
Author(s):  
Mohanakrishnan Logan ◽  
Chettiyappan Visvanathan
Keyword(s):  
Anaerobic Digestion ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Management Practice ◽  
Management Strategies ◽  
Land Application ◽  
Current Status ◽  
Organic Fraction ◽  
Biogas Yield ◽  
Treatment Technologies

Anaerobic digestion has emerged as the preferred treatment for organic fraction of municipal solid waste. Digestate management strategies are devised not only for safe disposal but also to increase the value and marketability. Regulations and standards for digestate management are framed to address the pollution concerns, conserve vulnerable zones, prevent communicable diseases, and to educate on digestate storage and applications. Regulations and the desired end uses are the main drivers for the enhancement of digestate through pretreatment, in vessel cleaning, and post-digestion treatment technologies for solid and liquid fractions of digestate. The current management practice involves utilization of digestate for land application either as fertilizer or soil improver. Prospects are bright for alternative usage such as microalgal cultivation, biofuel and bioethanol production. Presently, the focus of optimization of the anaerobic digestion process is directed only towards enhancing biogas yield, ignoring the quality of digestate produced. A paradigm shift is needed in the approach from ‘biogas optimization’ to ‘integrated biogas–digestate optimization’.

scholarly journals Bio-Delignification of Green Waste (GW) in Co-Digestion with the Organic Fraction of Municipal Solid Waste (OFMSW) to Enhance Biogas Production

2021 ◽  
Vol 11 (13) ◽  
pp. 6061
Author(s):  
Bruno Semeraro ◽  
Daniela Summa ◽  
Stefania Costa ◽  
Federico Zappaterra ◽  
Elena Tamburini
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Biogas Production ◽  
White Rot Fungi ◽  
White Rot ◽  
Organic Fraction ◽  
Green Waste ◽  
Biogas Yield ◽  
Thermophilic Conditions ◽  
Chemical Pretreatments

The organic fraction of municipal solid waste (OFMSW) is recognized as a suitable substrate for the anaerobic digestion (AD) process and is currently considered a mature technology. A promising strategy to enhance biogas yield and productivity is the co-digestion of OFMSW with other organic biomass, such as green waste (GW), a mixture of leaves, grass, and woody materials originated from private yards and public greenspace management. The main limitation to the use of GW for biogas production is the high percentage of the lignocellulosic fraction, which makes necessary a pretreatment of delignification to dissolve the recalcitrant structure. In this study, a new strategy of sustainable bio-delignification using the white-rot fungi Bjerkandera adusta (BA) in comparison with other chemical pretreatments were investigated. Untreated and treated GW were, respectively, submitted to anaerobic co-digestion with OFMSW. AD processes were carried out in a lab-scale plant for 30 days in thermophilic conditions (55 °C). Biogas cumulative production was increased by about 100% in the case of treated GW compared with that of just OFMSW, from 145 to 289 Nm3 CH4/ton SV, and productivity almost doubled from 145 to 283 Nm3/ton FM * day. The measured average methane content values in the cumulative biogas were 55% from OFMSW and 54% from GW. Moreover, over 95% of the biogas was produced in 20 days, showing the potential opportunity to reduce the AD time.

Municipal Solid Waste (MSW) Organic Fraction to Energy. Cuban Case Study. Brief Considerations

2016 ◽  
Vol 2 (2) ◽  
pp. 39-44
Author(s):  
Oscar Cabeza ◽  
◽  
Alfredo Alonso ◽  
Yoel Lastre ◽  
Jorge Medina ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Organic Fraction

scholarly journals Economic and environmental assessment of bacterial poly(3-hydroxybutyrate) production from the organic fraction of municipal solid waste

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Jon Kepa Izaguirre ◽  
Leire Barañano ◽  
Sonia Castañón ◽  
José A. L. Santos ◽  
M. Teresa Cesário ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Environmental Assessment ◽  
Basal Medium ◽  
Economic Feasibility ◽  
Limiting Factors ◽  
Organic Fraction ◽  
Extraction Solvent ◽  
Experimental Parameters ◽  
The Cost

AbstractThe management of municipal solid waste is a major logistic and environmental problem worldwide. Nonetheless, the organic fraction of municipal solid waste (OFMSW) is a valuable source of nutrients which can be used for a variety of purposes, according to the Circular Economy paradigm. Among the possible applications, the bioproduction of a biodegradable polyester, poly(3-hydroxybutyrate) [P(3HB)], using OFMSW as carbon platform is a promising strategy. Here, an economic and environmental assessment of bacterial P(3HB) production from OFMSW is presented based on previously published results. The SuperPro Designer® software was used to simulate P(3HB) production under our experimental parameters. Two scenarios were proposed depending on the fermentation medium: (1) enzymatic hydrolysate of OFMSW supplemented with glucose and plum waste juice; and (2) basal medium supplemented with glucose and plum waste juice. According to our results, both scenarios are not economically feasible under our experimental parameters. In Scenario 1, the low fermentation yield, the cost of the enzymes, the labour cost and the energy consumption are the factors that most contribute to that result. In Scenario 2, the cost of the extraction solvent and the low fermentation yield are the most limiting factors. The possibility of using process waste as raw material for the generation of other products must be investigated to enhance economic feasibility. From an environmental viewpoint, the photochemical oxidation potential (derived from the use of anisole as extraction solvent) and the generation of acid rain and global warming effect (caused by the burning of fuels for power generation) are the most relevant impacts associated to P(3HB) production under our experimental parameters.

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.

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