Effects of swine manure storage time on solid-liquid separation and biogas production: A life-cycle assessment approach

Hollas, Camila Ester; Bolsan, Alice Chiapetti; Chini, Angélica; Venturin, Bruno; Bonassa, Gabriela; Cândido, Daniela; Antes, Fabiane Goldschmidt; Steinmetz, R. L. R.; Prado, Naimara Vieira do; Kunz, Airton

doi:10.1016/j.rser.2021.111472

Cited by 27 publications

(6 citation statements)

References 101 publications

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“…During this process, bacteria emit energy no longer in the form of heat (as is the case with aerobic decomposition), but in the form of a chemical-methane. Such conditions are characteristic of those prevailing in typical biogas reactors [20]. On the other hand, nitrous oxide increases especially when no methane formation is observed (possibly its level is very low).…”

Section: Introductionmentioning

confidence: 71%

Energy and Economic Balance between Manure Stored and Used as a Substrate for Biogas Production

Mazurkiewicz

2022

Energies

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The aim of the study is to draw attention to the fact that reducing methane and nitrous oxide emissions as a result of traditional manure storage for several months in a pile is not only a non-ecological solution, but also unprofitable. A solution that combines both aspects—environmental and financial—is the use of manure as a substrate for a biogas plant, but immediately—directly after its removal from the dairy barn. As part of the case study, the energy and economic balance of a model farm with dairy farming for the scenario without biogas plant and with a biogas plant using manure as the main substrate in methane fermentation processes was also performed. Research data on the average emission of ammonia and nitrous oxide from 1 Mg of stored manure as well as the results of laboratory tests on the yield of biogas from dairy cows manure were obtained on the basis of samples taken from the farm being a case study. The use of a biogas installation would allow the emission of carbon dioxide equivalent to be reduced by up to 100 Mg per year. In addition, it has been shown that the estimated payback period for biogas installations is less than 5 years, and with the current trend of increasing energy prices, it may be even shorter—up to 4 years.

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Section: Introductionmentioning

confidence: 71%

Energy and Economic Balance between Manure Stored and Used as a Substrate for Biogas Production

Mazurkiewicz

2022

Energies

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“…A comparison of methane yields produced by filtration with different sieve mesh sizes revealed that the liquid fraction from a 0.1 mm sieve gave a 1.4 to 2.7 times higher yield than results previously reported for the 2 mm sieve separation, which were in the range of 173 to 342 mL-CH 4 /g-VS added . 23,[28][29][30] This comparison clearly demonstrated that the 0.1 mm sieve filtration effectively provided an appropriate concentration of biodegradable compounds for high methane production in the slurry.…”

Section: High Methane Production Yield From a 01 MM Sieve Filtrate Sa...mentioning

confidence: 77%

“…Therefore, a simpler method of separation using sieve mesh filtration has been proposed as a potentially useful technology for pig farming 13,27 . Previous studies have shown that when pig manure was filtered using a 2 mm mesh sieve to separate liquid and solid contents, the liquid supernatant containing a high proportion of organic matter could be used to produce methane with 1.2‐ to 1.6‐fold greater yields than those produced by raw manure without filtration 23,28‐30 . However, this method still requires a long settling time of approximately 1 h before the filtrate liquid can be used in the AD process.…”

Section: Introductionmentioning

confidence: 99%

Solid‐Liquid separation through sieve mesh for enhancing biogas production in a swine farm

Woraruthai

Jiemanukunkij

Tirapanampai

et al. 2022

Intl J of Energy Research

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Summary Anaerobic digestion is one of the most efficient methods for pig manure management. In this study, methane measurement of a liquid fraction obtained from 0.1 mm sieve mesh filtration and raw pig manure was conducted, and the corresponding dynamic evolution of metabolites and microbial community structure was investigated. The results showed that the liquid fraction filtered through a 0.1 mm sieve mesh gave a maximum methane production yield of 468.13 mL‐CH4/g‐VSadded, 4.50‐times higher than raw pig slurry after 60 days. This result indicates that the 0.1 mm sieve filtration effectively provided an appropriate concentration of biodegradable compounds for high methane production in the slurry. Interestingly, the filtrates from 0.1 mm sieve mesh initially produced a high amount of volatile fatty acid, which later considerably decreased the concentrations of acetic and butyric acids on the day when the methane concentration increased. The metabolite results were consistent with the microbial community analysis, which revealed an increase in the populations of acid‐producing bacteria and archaea in the filtrates from 0.1 mm sieve mesh samples as compared to the non‐filtered samples. These findings indicate that the filtrates from a 0.1 mm sieve mesh sample contained a greater proportion of cooperative producers of acid and methane than the non‐filtered samples. In addition, the techno‐economic analysis demonstrated that this method would be economically viable when applied to a large‐scale system (100 tons of pig slurry) since it can yield a substantial profit margin of 1,847,723 $/year and a return on investment of 25%.

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“…The destination of swine production waste is an environmental and social impact factor, which distances it from the economic relevance of this activity (Hollas et al, 2021).…”

Section: Pig Productionmentioning

confidence: 99%

Sustainability assessment of pig production: a study in Santa Catarina, Brazil

Krüger¹,

Bucior²,

Casagranda

et al. 2023

CeN

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This study aimed to identify the sustainability practices of pig creation on rural properties in the West region of the state of Santa Catarina, Brazil. The analysis included the system of sustainability indicators in pig farming. Although managers comply with the regulations and legislation, there are practical difficulties related to the destination of production waste, water use, expenditure controls, and social interaction. The sustainability analysis allowed investigating 30 properties and using a scale of 0-10 points, rate factors related to organizational, social, and environmental practices. Nine rural properties had a general performance, indicating characteristics of in search for sustainability, while 21 obtained a performance between 2.5 and 5.0 points, indicating fragilities in organizational, environmental, and social practices. It highlights the importance of analyzing sustainability indicators as a mechanism to control and implement better practices to assist in the search for sustainable development.

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Effects of swine manure storage time on solid-liquid separation and biogas production: A life-cycle assessment approach

Cited by 27 publications

References 101 publications

Energy and Economic Balance between Manure Stored and Used as a Substrate for Biogas Production

Energy and Economic Balance between Manure Stored and Used as a Substrate for Biogas Production

Solid‐Liquid separation through sieve mesh for enhancing biogas production in a swine farm

Sustainability assessment of pig production: a study in Santa Catarina, Brazil

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