Producción de biogás con estiércol de cerdo a partir de un biodigestor en la Granja EMAVIMA Jipijapa – Ecuador

Merino, Miguel Ángel Osejos; Véliz, Julio Javier Jaramillo; Conforme, Martín Verisimo Merino; Gómez, Alex J. Quimis; Cobeña, José L. Alcívar

doi:10.23857/dc.v4i1.788

Cited by 5 publications

(3 citation statements)

References 1 publication

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“…It was possible to estimate a high current production of swine manure in very small localities, which if not correctly treated, can cause negative environmental impacts, such as soil and water contamination and generation of gases that potentiate the greenhouse effect; in addition, when waste is dispersed on land, it causes unhealthy situations due to bad odors, among others; which decreases the quality of life for people; as some local inhabitants mention (Osejos et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Analysis of the environmental impact generated by backyard swine production in Tepetlán, Veracruz, Mexico

Solís-Tejeda

Lango-Reynoso

Castañeda-Chávez

et al. 2021

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Objective: To identify and estimate waste production, water consumption and production practices of backyard swine farms at the municipality of Tepetlán; Veracruz, Mexico, to foresee the possible influences on the environment and generate information that promotes new public environmental policies adapted to small producers.Methodology: 36 backyard livestock production units were identified and studied in Vicente Guerrero and Alto Tío Diego by a census in which structured surveys were applied to obtain data; the results were analyzed by descriptive statistics. The maximum pollutant potential of the load with the installed infrastructure was estimated.Results: We registered 503 swine heads of diverse zootechnical functions, mainly from the Landrace breed, in 36 studied farms, 54.7% of idle infrastructure was identified. We found that about three tons of excreta are produced per day between the towns of Vicente Guerrero and Alto Tío Diego, from which 78% are dumped into the municipal drainage. The average water consumption per unit of livestock production was 132.2 Land for each unit of animal population 28.5 L, with a standard deviation of 32.2 L per animal population unit. This research also provides information on the feeding and production practices of the animals. It was possible to estimate the volume of swine excreta generated in the assessed localities. However, it is necessary to quantify organic matter, nitrogenous products, phosphorus, and total and fecal coliforms.Conclusions: It is important to quantify and regulate the generated waste by this livestock activity, to take corrective and regulatory decisions, to establish solutions that protect natural resources without harming the economy of the small producer.

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Section: Resultsmentioning

confidence: 99%

Analysis of the environmental impact generated by backyard swine production in Tepetlán, Veracruz, Mexico

Solís-Tejeda

Lango-Reynoso

Castañeda-Chávez

et al. 2021

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“…Intensive pig production generates considerable quantities of manure, and its final disposal represents a major environmental problem. Uncontrolled applications of pig manure over oil can cause an excess of nitrates, salts, heavy metals (copper and zinc), pathogens, xenobiotic compounds, and emissions of GHG [9].…”

Section: Substitute Raw Materials (Biogas)mentioning

confidence: 99%

“…Pigs produce 4 kg of fresh manure per day per head, so each pig can produce 0.33 m 3 of useful biogas per day [9].…”

Section: Substitute Raw Materials (Biogas)mentioning

confidence: 99%

Study of the Heterogeneous Catalytic Model for Syngas Production in a Simulated Environment for Application in CO2 Capture Process

Siles Camacho,

Sandoval Cossío

2023

Research Advances in Syngas

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The study was carried out under the possibility of transforming conventional petrochemical processes, such as ammonia production plant, into carbon dioxide capture systems by means of replacing fossil natural gas with biogas, generated by manure during an anaerobic digestion. Three partial substitution scenarios were proposed: 30, 40 and 50% in order to analyse the behaviour of CO2 in the syngas unit process, applying an equivalent CO2 balance to evaluate if it is possible to capture this GHG within the same process, thus achieving negative emissions. The simulation of heterogeneous catalytic model of the methane reforming reactions, allowed us to assess the kinetic behaviour of all reactions involved and modify operating conditions in order to increase the production of CO2 and maintain its required flow as a secondary product, and at the same time to decrease CO2 emissions. The result shows that a 30% substitution is possible in order to achieve a −1.48e6 lb/h of equivalent CO2.

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Thermal pretreatment of swine waste to improve biodegradability in the anaerobic digestion process. Effect on the physicochemical characteristics of the substrate

Chamorro,

Echeverría,

Rodado

et al. 2024

Eureka: PE

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In anaerobic digestion (AD) processes, hydrolysis is considered the limiting stage in the degradation of solid wastes. Such is the case of swine manure digestion, which due to the complex physical and chemical structure of the lignocellulosic material that composes it, an energy wastage has been observed in terms of methane production. Among the strategies used to improve the hydrolysis stage, it is possible to mention the thermal pretreatment of the substrate, which can significantly improve the biodegradability of the material used as raw material in AD. In this study, the effect of temperature (60–177 °C) and exposure time (30–60 min) on the physicochemical properties of the substrate such as pH, volatile organic acids (VOAs), total inorganic carbonates (TIC), volatile solids (SV), total solids (ST), soluble chemical oxygen demand (CODs) and biochemical methane potential (BMP) were determined. The temperature factor had a higher level of significance compared to the exposure time on the parameters of pH, VOAs, and TIC before and after the biogas generation process. However, the effect was different for CODs, where time was more significant than treatment temperature. As for the parameters of total and volatile solids content (ST and SV), the factors evaluated (temperature and exposure time) did not show significant effect. Also, the pretreatments showed an increase in biochemical methane potential, outperforming the untreated substrate by up to 70.4 % (121.74vs.71.44 mLCH4 gVS-1). The best combination of heating temperature and operating time was 120 °C and 45 min, which promoted the hydrolysis step that was reflected in an increase in CODs and improvement in methane production by 42 % over the untreated substrate

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Producción de biogás con estiércol de cerdo a partir de un biodigestor en la Granja EMAVIMA Jipijapa – Ecuador

Cited by 5 publications

References 1 publication

Analysis of the environmental impact generated by backyard swine production in Tepetlán, Veracruz, Mexico

Analysis of the environmental impact generated by backyard swine production in Tepetlán, Veracruz, Mexico

Study of the Heterogeneous Catalytic Model for Syngas Production in a Simulated Environment for Application in CO2 Capture Process

Thermal pretreatment of swine waste to improve biodegradability in the anaerobic digestion process. Effect on the physicochemical characteristics of the substrate

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