Economic Perspectives of Biogas Production via Anaerobic Digestion

Bhatt, Arpit; Tao, Ling

doi:10.3390/bioengineering7030074

Cited by 112 publications

(56 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Water content in food waste varies widely depending on the food source, and in some cases it reaches 75% 36 . Thus measuring the moisture content of each food waste sample is crucial when calculating the total quantities produced and the nutrient content in each sample 37 .…”

Section: Resultsmentioning

confidence: 99%

“…The main concept is the replacement of LPG with biogas, where savings can be achieved. Bhatt and Tao studied the economic perspectives of biogas production via AD at different facility scales 36 . It is important to note that if food waste is processed at higher plant scales this ultimately reduces the overall cost through economies of scale.…”

Section: Biogas Production and Methane Concentration (21 Days-time Inmentioning

confidence: 99%

See 1 more Smart Citation

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

Al-Wahaibi

Osman

Al-Muhtaseb

et al. 2020

Sci Rep

114

View full text Add to dashboard Cite

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 .

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Biogas Production and Methane Concentration (21 Days-time Inmentioning

confidence: 99%

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

Al-Wahaibi

Osman

Al-Muhtaseb

et al. 2020

Sci Rep

114

View full text Add to dashboard Cite

show abstract

“…The cost of biogas production by anaerobic digestion presents a wide range of values for each feedstock, mainly due to the economy of scale. It is difficult for biogas to compete with the low prices of natural gas worldwide [ 134 ]. Biogas is produced as a mixture of mainly methane and CO 2 , and thus its energy content is much lower.…”

Section: Technical and Economic Feasibility Of Anaerobic Digestionmentioning

confidence: 99%

“…Applied research associated with new technological developments is required to increase biogas production by increasing reactor efficiency and making anaerobic digestion a cost-effective process capable of producing a sustainable fuel with similar characteristics to natural gas [ 134 ]. Imeni et al [ 141 ] performed a techno-economic assessment for a digestion plant associated with a livestock farm of 250 adult cattle heads.…”

Section: Technical and Economic Feasibility Of Anaerobic Digestionmentioning

confidence: 99%

Anaerobic Digestion for Producing Renewable Energy—The Evolution of This Technology in a New Uncertain Scenario

Arenas

Pesantes

Carpio

et al. 2021

Entropy

View full text Add to dashboard Cite

Anaerobic digestion is a well-known technology with wide application in the treatment of high-strength organic wastes. The economic feasibility of this type of installation is usually attained thanks to the availability of fiscal incentives. In this review, an analysis of the different factors associated with this biological treatment and a description of alternatives available in literature for increasing performance of the process were provided. The possible integration of this process into a biorefinery as a way for producing energy and chemical products from the conversion of wastes and biomass also analyzed. The future outlook of anaerobic digestion will be closely linked to circular economy principles. Therefore, this technology should be properly integrated into any production system where energy can be recovered from organics. Digestion can play a major role in any transformation process where by-products need further stabilization or it can be the central core of any waste treatment process, modifying the current scheme by a concatenation of several activities with the aim of increasing the efficiency of the conversion. Thus, current plants dedicated to the treatment of wastewaters, animal manures, or food wastes can become specialized centers for producing bio-energy and green chemicals. However, high installation costs, feedstock dispersion and market distortions were recognized as the main parameters negatively affecting these alternatives.

show abstract

“…Therefore, the treatment plant is designed based on the type of incoming wastewater. One of the most important issues before designing and constructing any wastewater treatment plant is choosing the right treatment process, in a way that a wrong choice can result in a huge increase of costs and even in some cases not achieving the desired outcome [13][14][15][16][17]. The United Nations Environment Program (UNDP) (2015) has evaluated wastewater treatment policies in a report with a comparative approach [18].…”

Section: Introductionmentioning

confidence: 99%

Economic evaluation of different biological municipal wastewater treatment systems and implementation of AHP method based on operating costs

Gheibi¹,

chahkandi²,

Kochakzadeh³

et al. 2021

Ann Syst Biol

View full text Add to dashboard Cite

In large cities, several hundred cubic meters of municipal wastewater is produced every day, which because of high levels of pollution, needs to be treated either for disposal or secondary use. Some of the most important indicators and pollutants that should be reduced to the standard range are VOC, TSS, TDS, BOD 5 , nitrogen, phosphorus, heavy metals, and pathogens. Wastewater treatment plants, which have different capacities and procedures depending on the type and characteristics of the infl uent and effl uent, have large budgets of several hundred million for their life cycle. These costs include construction, maintenance, operation, chemical and biological materials, energy, and amortization. The costs associated with these environmentally essential infrastructures vary according to their treatment processes. This issue leads environmental engineers and policymakers to economic evaluation of various methods. This study with the help of CapdetWorks2.5 software has discussed three different methods of Complete Mixed Activated Sludge (CMAS), Aerated lagoon, and Oxidation Ditch in wastewater treatment plants in terms of operating costs. Evaluation and implementation of the decision-making system were conducted using Analytic Hierarchy Process (AHP). The results of the analysis showed that aeration ponds are the most optimal option in terms of operating costs with a value of 47.3%. The other two studied methods, namely CMAS and Oxidation Ditch, have a value of 24.9% and 27.9%, respectively.

show abstract

Economic Perspectives of Biogas Production via Anaerobic Digestion

Cited by 112 publications

References 80 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

Anaerobic Digestion for Producing Renewable Energy—The Evolution of This Technology in a New Uncertain Scenario

Economic evaluation of different biological municipal wastewater treatment systems and implementation of AHP method based on operating costs

Contact Info

Product

Resources

About