Analysis of the biogas productivity from dry anaerobic digestion of organic fraction of municipal solid waste

Matheri, Anthony Njuguna; Sethunya, Vuiswa Lucia; Belaid, Mohamed; Muzenda, Edison

doi:10.1016/j.rser.2017.06.041

Cited by 44 publications

(20 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Anaerobic digestion (AD) is a naturally occurring process in which organic matter is converted into a biogas (a combination of methane and carbon dioxide) and a digestate (semi-solid residue), by microorganisms in the absence of oxygen [1,2,3,4]. However, the process can be engineered and optimized in dedicated plants to maximize the biogas production.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

2018

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The process can be conditioned by various operating factors. Among them, the most impacting process performance factors are feed rate, solid content, temperature, and retention time [1,2,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

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

2018

View full text Add to dashboard Cite

show abstract

“…However, biogas and biomethane yields cannot be defined only as a function of the substrate. In fact, gas yields depend highly on the dry matter content, storage feedstock, and feedstock handling, and an exact estimate requires feedstock testing [75]. In this work, p u b is assumed equal to 75 m 3 biomethane/ton [55].…”

mentioning

confidence: 99%

Sustainable Italian Cities: The Added Value of Biomethane from Organic Waste

2019

View full text Add to dashboard Cite

This work focuses on the profitability of biomethane plants and the environmental benefits obtained recovering the organic fraction of municipal solid waste in Italy. The economic model is based on the calculations of the net present value, considering multiple capacities of biomethane production (ranging from 50 to 500 m3/h) and alternative scenarios based on the variation in subsidies, the selling price of biomethane, and the net revenues from the treatment of organic waste. The environmental analysis quantifies the reduction in greenhouse gas emissions obtained by natural gas vehicles fueled by biomethane. The economic and environmental results encourage energy change that can be achieved by municipalities that support the transformation of natural resources into green fuels. Across 15 Italian municipalities, the potential biomethane production varies from 80.4 million m3/year to 102.8 million m3/year, with an overall net present value ranging from 135 to 187 million €. In addition, the reduction in greenhouse gas emissions varies from 127 to 162 thousand-ton CO2eq/year. Both the economic and environmental results demonstrate that biomethane is a renewable resource with added value for municipalities.

show abstract

“…Organic wastes from municipalities, agricultural and industrial activities degrade over a period of time, having a negative impact on the environment [1]. Landfilling of these wastes is still the most common practice in the world [2], resulting in pollution of water and soil with leachate, and air with emission of methane and other greenhouse gases [3,4].…”

Section: Introductionmentioning

confidence: 99%

Dry Anaerobic Digestion of Food and Paper Industry Wastes at Different Solid Contents

et al. 2019

View full text Add to dashboard Cite

A large volume of food is being wasted every year, while the pulp and paper industry also generate a large amount of solid wastes on a daily basis, causing environmental challenges around the world. Dry anaerobic digestion (AD) of these solid wastes is a cost-effective method for proper management. However, dry digestion of these waste streams has been restricted due to their complex structure, the presence of possible inhibitors and inappropriate operating conditions. In light of this fact, dry digestion of food waste (FW) and paper wastes (PW) was conducted at different total solid (TS) concentrations of reactor mixtures of 14%, 16%, 18% and 20% TS, corresponding to substrate to inoculum (S/I) ratio of 0.5 and 1; investigating the optimum operating conditions for effective dry digestion of these complex wastes. The highest methane yields of 402 NmlCH4/gVS and 229 NmlCH4/gVS were obtained from digestion of FW and PW, respectively at 14%TS corresponding to an S/I ratio of 0.5. Increasing the S/I ratio from 0.5 to 1 and thereby having a TS content of 20% in the reactor mixtures was unfavorable to the digestion of both substrates.

show abstract

Analysis of the biogas productivity from dry anaerobic digestion of organic fraction of municipal solid waste

Cited by 44 publications

References 22 publications

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

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

Sustainable Italian Cities: The Added Value of Biomethane from Organic Waste

Dry Anaerobic Digestion of Food and Paper Industry Wastes at Different Solid Contents

Contact Info

Product

Resources

About