Development of a horizontal reactor with radial agitation to synthesize bio-methane from biomass waste and domestic sewage sludge

Filho, Derovil Antonio dos Santos; Oliveira, Laís Roberta Galdino de; Fraga, Tiago José Marques; Sobrinho, Maurı́cio Alves da Motta; Jucá, José Fernando Thomé

doi:10.1016/j.jclepro.2020.120616

Cited by 7 publications

(6 citation statements)

References 34 publications

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“…The number of volatile solids is directly related to the level of organic load, directly responsible for the production of biogas [ 9 , 10 ]. The higher this value, the better the biodigestion/AD process.…”

Section: Resultsmentioning

confidence: 99%

“…The alkalinity results obtained from the samples before and after biodigestion show that the final substrate has a higher alkalinity value than the initial one, indicating that the anaerobic biodigestion process is responsible for the production of alkalizing substances, mainly bicarbonates that are responsible for neutralizing the acids produced, increase resistance to pH drop [ 10 , 24 ] and maintain appropriate levels for better system performance.…”

Section: Resultsmentioning

confidence: 99%

“…According to factorial design experiments and the AD process simulations, temperature range simulated in this work (Table 5 ) encompasses the temperature range of several works found in the literature, which varied from 308 to 328 K [ 10 , 30 , 31 ]. This implies that both the simulation and the proposed kinetic model represent the behavior of biogas production considering the experimental condition established for 303 K (mesophilic methane fermentation).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it can be a feasible alternative to obtain savings in process costs. However, the literature regarding the use of solid wastes from craft beer industries in anaerobic digestion (AD) is rather scarce when compared to other sources, such as food wastes [ 5 , 6 ], bagasse from plantation [ 7 ], cow, cattle, swine and chicken manure [ 8 , 9 ], and sludges from sewage and effluent treatment plants [ 10 ]. This practice becomes interesting in face of the continuous growing of environmental, social and corporate governance (ESG) practices; one of them, the reducing of the consumption of fossil fuels (coal, natural gas, oil and its derivatives) [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

“…One of the most widespread processes to produce biogas from biomass source is the AD [ 10 , 16 ]. This technology has great potential for application to concentrated or diluted organic effluents, mainly due to the low production of sludge (5 to 10 times lower than what occurs in aerobic processes) [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Biogas production from malt bagasse from craft beer industry: kinetic modeling and process simulation

Tschoeke

Fraga

Silva

et al. 2023

J Mater Cycles Waste Manag

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In this work, biogas was synthesized from malt enriched-craft beer bagasse with the objective to generate clean energy. Thus, a kinetic model based on thermodynamic parameters was proposed to represent the process with coefficient determination ( R 2 ) of 0.82. A bench-top biodigester of 2.0 × 10 –3 m 3 was built in glass, and equipped with sensors to measure pressure, temperature, and methane concentration. The inoculum selected for the anaerobic digestion was the granular sludge, and malt bagasse was used as substrate. Data were fitted to a pseudo-first-order model for the formation of methane gas using the Arrehnius equation as basis. For the simulations of biogas production, the Aspen Plus ™ software was used. Results from 2 3 factorial design experiments evidenced that equipment was efficient, and the craft beer bagasse showed great biogas production, with nearly 95% of methane yield. The temperature was the variable that showed most influence in the process. Moreover, the system has a potential for the generation of 10.1 kWh of clean energy. Kinetic constant rate for methane production was 5.42 × 10 –7 s −1 and activation energy 8.25 kJ mol −1 . A statistical analysis using a math software was performed and evidenced that the temperature played a major role in the biomethane conversion. Supplementary Information The online version contains supplementary material available at 10.1007/s10163-023-01715-7.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%