Biogas from Organic Waste - A Case Study

Mustafa, Mohamad Y.; Calay, Rajnish Kaur; Romàn, Elisabeth

doi:10.1016/j.proeng.2016.06.397

Cited by 27 publications

(17 citation statements)

References 6 publications

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“…On the other hand, using food waste as a potential source for the production of sustainable fuels will complete the full cycle of this waste stream sustainably and thus, directly support and facilitate the concept of the circular economy in the form of open-loop recycling 5 – 8 . One of the promising ways of dealing with such waste stream is through processing via anaerobic digestion (AD) to produce biogas 9 , 10 . The AD is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen for industrial or domestic purposes to manage waste and/or to release energy.…”

Section: Introductionmentioning

confidence: 99%

Techno-economic evaluation of biogas production from food waste via anaerobic digestion

Al-Wahaibi

Osman

Al-Muhtaseb

et al. 2020

Sci Rep

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Food waste is a major constituent in municipal solid wastes and its accumulation or disposal of in landfills is problematic, causing environmental issues. Herein, a techno-economic study is carried out on the potential of biogas production from different types of food waste generated locally. The biogas production tests were at two-time sets; 24-h and 21-day intervals and results showed a good correlation between those two-time sets. Thus, we propose to use the 24-h time set to evaluate feedstock fermentation capacity that is intended for longer periods. Our approach could potentially be applied within industry as the 24-h test can give a good indication of the potential substrate gas production as a quick test that saves time, with minimal effort required. Furthermore, polynomial models were used to predict the production of total gas and methane during the fermentation periods, which showed good matching between the theoretical and practical values with a coefficient of determination R2 = 0.99. At day 21, the accumulative gas production value from mixed food waste samples was 1550 mL per 1 g of dry matter. An economic evaluation was conducted and showed that the case study breaks-even at $0.2944 per cubic metre. Any prices above this rate yield a positive net present value (NPV); at $0.39/m3 a discounted payback period of six years and a positive NPV of $3108 were calculated. If waste management fee savings are to be incorporated, the total savings would be higher, increasing annual cash flows and enhancing financial results. This economic evaluation serves as a preliminary guide to assess the economic feasibility based on the fluctuating value of methane when producing biogas from food waste via anaerobic digestion, thus could help biogas project developers investigate similar scale scenarios .

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Section: Introductionmentioning

confidence: 99%

Techno-economic evaluation of biogas production from food waste via anaerobic digestion

Al-Wahaibi

Osman

Al-Muhtaseb

et al. 2020

Sci Rep

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“…[48] [49] [50] [51]. Indeed, the cellulose was pretreated under acidified aqueous conditions and the hydrolysis was optimized in using commercial enzymes (beta-glucosidase and pectinase).…”

Section: Acidificationmentioning

confidence: 99%

Conference Paper: Green Industry Adapted to Recycling Needs of Lubumbashi City and Surrounding Areas in Democratic Republic of the Congo

Mwene-Mbeja¹,

Vaneeckhaute²

2019

GSC

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The interest of this conference is agricultural, environmental, bioenergetics, and sanitary. In that context, domestic, agricultural and industrial environments produce organic waste, which needs to be collected, selected, stored and recycled properly in order to avoid environmental pollution and promote agriculture. The green Industry proposed involves the conversion of natural, non-toxic organic waste in order to efficiently produce organic fertilizers for agriculture. These types of fertilizers from biological origin are suitable because they are not toxic for human and the environment. Enzymatic reactions described in this presentation concern mainly the hydrolysis of proteins, sugars and lipids, the acidification of intermediate products from hydrolysis, the formation of acetate, and the production of methane. In other words, this review is timely as it discusses for the chemical behavior or the reactivity of different functional groups to better understand the enzymatic catalysis in the transformations of residual proteins, carbohydrates, and lipids to generate biomethane and fertilizers. In the same perspective, this review is to enrich the documentation related to organic reactions catalyzed by enzymes, which occur in the anaerobic degradation of residual organic substances, with emphasis on the structures of organic compounds and reaction mechanisms. This will allow understanding the displacement of the electrons of a reactive entity rich in electrons to another reactive entity that is poor in electrons to form new bonds in products.

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“…This is due to the fact that it fits into the ideas of circular economy (Czekała et al, 2020). Composting is one of the biological processes (Cerda et al, 2018; Nalepa et al, 2018), just like the biogas production in the anaerobic digestion process (Mustafa et al, 2016). The composting process takes place under the aerobic conditions and is popular in the management of many substrates (Czekała et al, 2018;Żukowska et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Food Waste Management Using Hermetia Illucens Insect

Czekała¹,

Janczak²,

Cieślik³

et al. 2020

J. Ecol. Eng.

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In modern agricultural biogas plants, the biowastes are being increasingly used for the biogas production. The food waste is also widely used in larvae breeding. This is an important because, based on biowaste, its proper management and green energy production is possible. This study aims to determine the biogas and methane efficiency of the Hermetia illucens larvae that were fed using the food waste. In the research on the biogas and methane efficiency, the Hermetia illucens larvae were used. The total solids (TS) of the substrate equals 30.35%, and the volatile solids (VS) content was 92.31% of TS. The larvae were fed only with the food waste of plant origin. The obtained substrates were homogeneous. The experiment was carried out under mesophilic anaerobic digestion conditions-39°C in the 21-chamber biofermentor set in the Institute of Biosystems Engineering in Poznań University of Life Sciences. The anaerobic digestion process in the batch reactor ran correctly. Fermentation inhibition was not detected. The biogas efficiency for larvae amounted to 198.75 m 3 •Mg-1 fresh mass (FM). On the other hand,the methane efficiency, amounted to 127.73 m 3 •Mg-1 , at the methane concentration of 64.27%. On the basis of the research, it was found that the larvae feeding on food waste can be used directly as anaerobic digestion in the bioconversion process.

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Biogas from Organic Waste - A Case Study

Cited by 27 publications

References 6 publications

Techno-economic evaluation of biogas production from food waste via anaerobic digestion

Techno-economic evaluation of biogas production from food waste via anaerobic digestion

Conference Paper: Green Industry Adapted to Recycling Needs of Lubumbashi City and Surrounding Areas in Democratic Republic of the Congo

Food Waste Management Using Hermetia Illucens Insect

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