Environmental assessment of energy production from anaerobic digestion of pig manure at medium-scale using life cycle assessment

Ramírez-Islas, Martha E.; Güereca, Leonor Patricia; Sosa-Rodríguez, Fabiola S.; Cobos-Peralta, Mario A.

doi:10.1016/j.wasman.2019.10.012

Cited by 58 publications

(10 citation statements)

References 44 publications

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“…Scenario 3 shows the lowest values in all assessed categories. According to Ardolino and Arena (2019) and Ramírez-Islas et al (2020), the use of biogas shows a better environmental performance if it is equal to the excess of the quantity necessary to satisfy the internal electricity consumption of the system due to savings from electricity selfconsumption. This objective is accomplished in scenario 3, and it is corroborated in the LCA results obtained in this study.…”

Section: Resultsmentioning

confidence: 99%

“…They concluded that the largescale plant had a better performance compared to the household plant from an energetic and environmental perspective. Through LCA, Ramírez-Islas et al (2020) assessed the environmental effects of energy production from pig manure treatment by AD at medium-scale. They concluded that flaring biogas has a higher environmental burden than energy production.…”

Section: Introductionmentioning

confidence: 99%

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Uncertainty of the life cycle assessment of biogas power

Huerta-Reynoso

López-Aguilar²,

Gómez-Méndez³

et al. 2022

Rev. Int. Contam. Ambie.

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The main goal of this study was to compare energy consumption scenarios at a small-scale barn with an in situ biogas plant. Five life cycle assessment scenarios of dairy manure management were assessed. A real small-scale manure biogas power plant in Mexico (S-BPP) was used as case study. Five scenarios were modeled: (1.1) electricity consumption from the national grid; (1.2) electricity consumption considering a natural gas combined cycle power plant (CCPP); (2.1) partial use of electricity from the national grid and the electricity produced by the S-BPP; (2.2) partial use of electricity from the CCPP and the S-BPP, and (3) a dry anaerobic digestion S-BPP. A Monte Carlo simulation was carried out to manage the uncertainty with 95 % of confidence. A reduction of emissions in the combined cycle power grid by exploiting the manure to produce biogas, was established. Specifically, in the climate change category, there is an impact reduction by up to 70 %, which corroborates that the choice of small-scale biogas in agriculture systems is environmentally feasible. It is confirmed that using S-BPP produces a significant decrease of impacts when compared to CCPP. The results of the modeling scenarios, such as dry anaerobic digestion and/or combined cycle power plants, show a significant reduction in the emissions of the selected impact categories. This study confirms the need to develop more accurate databases of life cycle inventories regarding the Mexican electricity grid, in order to perform more reliable studies.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Uncertainty of the life cycle assessment of biogas power

Huerta-Reynoso

López-Aguilar²,

Gómez-Méndez³

et al. 2022

Rev. Int. Contam. Ambie.

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“…Khoshnevisan et al [75] performed a consequential life cycle assessment to compare the conversion of the organic fraction of municipal solid waste to bioenergy and high-value bioproducts (e.g., microbial protein, lactic, and succinic acid). The environmental impact of energy production through anaerobic digestion of pig manure was quantified by Ramírez-Islas [76]. Eutrophication was identified as the most negative effect which required further attention.…”

Section: Emerging Toolsmentioning

confidence: 99%

Emerging Tools for Energy System Design Increasing Economic and Environmental Sustainability

2020

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Energy is a fundamental element supporting societal development, particularly with the increasing dependency on the Internet of Things. It is also the main contributor to environmental impacts and subsequently, a potential sector for mitigation. Sustainable energy system design considers energy savings and energy efficiency, waste and consumption reduction, process efficiency enhancement, waste heat recovery, and integration of renewable energy. Emerging tools range from advanced Process Integration, modelling, simulation, and optimisation, to system analysis and assessment. This review covers selected emerging studies promoting sustainable system design, including the recent developments reported in the Special Issue (SI) of the 22nd Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES’19). The primary emphasis was to enhance the economic and environmental performance. However, social factors were also highlighted as essential for future sustainable development. The discussion and analysis in this review focus on the most recent developments of (a) heat integration and heat transfer; (b) integrated and newly developed heat exchangers, (c) integration of renewables, and (d) roles in economic and environmental sustainability. The key results are highlighted, and future research ideas are suggested according to their links to a broader context.

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“…The annual output of livestock manure in China has reached 3.8 billion tons, of which swine manure (SM) accounts for 38.3% [ 4 ]. At present, researchers have developed a series of technologies for the treatment/disposal of SM (a wet solid waste), mainly including composting [ 5 , 6 ], anaerobic digestion [ 7 , 8 ], hydrothermal carbonization (HTC) [ 9 , 10 , 11 ], pyrolysis [ 12 , 13 ], gasification [ 14 , 15 ], and liquefaction [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Speciation of Main Nutrients (N/P/K) in Hydrochars Produced from the Hydrothermal Carbonization of Swine Manure under Different Reaction Temperatures

et al. 2021

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Hydrothermal carbonization (HTC) has been proved to be a promising technology for swine manure (SM) treatment. Currently, there is a lack of systematic understanding of the transformation characteristics of nutrient speciation in the HTC of SM. In this study, the speciation of the main nutrients (N/P/K) in SM-derived hydrochar produced at different reaction temperatures (200–280 °C) was investigated. The recovery of P (61.0–67.1%) in hydrochars was significantly higher than that of N (23.0–39.8%) and K (25.5–30.0%), and the increase in reaction temperature promoted the recovery of P and reduced the recovery of N. After the HTC treatment, the percentage of soluble/available P was reduced from 61.6% in raw SM to 4.0–23.9% in hydrochars, while that of moderately labile/slow-release P was improved from 29.2% in raw SM feedstock to 65.5–82.7%. An obvious reduction was also found in the amounts of available N (from 51.3% in raw SM feedstock to 33.0–40.5% in hydrochars). The percentages of slow-release N and residual N in hydrochars produced at 240 °C reached the maximum and minimum values (46.4% and 18.9%), respectively. A total of 49.5–58.3% of K retained in hydrochars was residual (invalid) potassium. From the perspective of the mobility and availability of N, P and K only, it was suggested that the HTC of SM should be carried out at 220–240 °C. Compared with the original SM, it is safer and more effective to use the SM-derived hydrochar as an organic fertilizer.

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Environmental assessment of energy production from anaerobic digestion of pig manure at medium-scale using life cycle assessment

Cited by 58 publications

References 44 publications

Uncertainty of the life cycle assessment of biogas power

Uncertainty of the life cycle assessment of biogas power

Emerging Tools for Energy System Design Increasing Economic and Environmental Sustainability

Speciation of Main Nutrients (N/P/K) in Hydrochars Produced from the Hydrothermal Carbonization of Swine Manure under Different Reaction Temperatures

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