Social Urban Metabolism Strategies (SUMS) for Cities

Davis, Michael Maks; Polit, David Jacome; Lamour, Mathieu

doi:10.1016/j.proenv.2016.04.028

Cited by 8 publications

(4 citation statements)

References 12 publications

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“…According to Davis et al (2016) 29 the relation to the specific heat of methane (also known as net heating value or lower heating value), puts Cp(CH 4 ) at 10 kWh/m 3 , whilst the Swedish Gas Centre 52 put Cp(CH 4 ) at 9.97 kWh/m 3 . In this study, Cp (CH 4 ) = 10 kWh/m 3 was used.…”

Section: Resultsmentioning

confidence: 99%

“…The study was asses to estimate the amount of biogas and electricity generated from beverage wastewater sludge. The simplest way to generate electricity from biogas is with an internal combustion engine, and the amount of electricity produced from biogas can be calculated using the equation below 24 – 27 , 29 . where: is the electrical energy produced per tonne of organic residues (tres), in KW/tres, is the amount of biogas obtained from the organic residues of a biodigester, in m 3 , is the methane contained in the biogas, in percentage, is the specific heat of methane (KWh/m 3 ), is the electrical efficiency in percentage.…”

Section: Methodsmentioning

confidence: 99%

“…The high heat value and low heat value of waste are calculated using the Dulong Equation, which is shown below. To determine a fuel's LHV from its HHV or vice versa, the moles of water produced when a mole of fuel is burned must be determined 29 . where carbon, hydrogen, oxygen, and sulfur are the C, H, O, and S content (dry basis).…”

Section: Methodsmentioning

confidence: 99%

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Experimental and simulation analysis of biogas production from beverage wastewater sludge for electricity generation

Admasu

Bogale

Mekonnen

2022

Sci Rep

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This study assessed the biogas and methane production potential of wastewater sludge generated from the beverage industry. The optimization of the biogas production potential of a single fed-batch anaerobic digester was operated at different temperatures (25, 35, and 45 ℃), pH (5.5, 6.5, 7.5, 8.5, and 9.5), and organic feeding ratio (1:3, 1:4, 1:5, and 1:6) with a hydraulic retention time of 30 days. The methane and biogas productivity of beverage wastewater sludge in terms of volatile solid (VS) and volume was determined. The maximum production of biogas (15.4 m3/g VS, 9.3 m3) and methane content (6.3 m3/g VS, 3.8 m3) were obtained in terms of VS and volume at 8.5, 35 ℃, 1:3 of optimal pH, temperature, and organic loading ratio, respectively. Furthermore, the maximum methane content (7.4 m3/g VS, 4.4 m3) and biogas production potential (17.9 m3/g VS, 10.8 m3) were achieved per day at room temperature. The total biogas and methane at 35 ℃ (30 days) are 44.3 and 10.8 m3/g VS, respectively, while at 25 ℃ (48 days) increased to 67.3 and 16.1 m3/g VS, respectively. Furthermore, the electricity-generating potential of biogas produced at room temperature (22.1 kWh at 24 days) and optimum temperature (18.9 kWh) at 40 days was estimated. The model simulated optimal HRT (25 days) in terms of biogas and methane production at optimum temperature was in good agreement with the experimental results. Thus, we can conclude that the beverage industrial wastewater sludge has a huge potential for biogas production and electrification.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Experimental and simulation analysis of biogas production from beverage wastewater sludge for electricity generation

Admasu

Bogale

Mekonnen

2022

Sci Rep

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“…In Ecuador, in the "Social urban metabolism strategies" for cities, implemented in Quito, biogas technologies were found to be the optimal technology for the conversion of OFMSW into electricity [106]. Besides the biogas utilized to produce electricity, the advantages of heat and fertilizer (guinea pig fertilizer) [107], were also recognized as important products [106].…”

Section: Large-scale Digestersmentioning

confidence: 99%