Anaerobic Digestion of Swine Manure in Conventional and Hybrid Pilot Scale Plants: Performance and Gaseous Emissions Reduction

Chiumenti, R.; Chiumenti, Alessandro; Borso, Francesco da; Limina, Sonia; Landa, Antonio

doi:10.13031/2013.27053

Cited by 2 publications

(3 citation statements)

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“…Digester volume for our scenarios was calculated according to Equation (2), where HRT is the hydraulic retention time in days; S is herd size; M is daily manure production in m 3 d −1 head −1 ; CS vol is the volume of corn stover added to the digester; and W vol is the volume of water added to the digester.…”

Section: Capital Costsmentioning

confidence: 99%

“…The AD process captures the methane and displaces fossil fuels when it is utilized as an energy source [1]. In addition to providing a renewable energy source that is independent of short-term weather fluctuations (i.e., wind, sunlight), AD of animal manure offers other benefits, including reductions in odor from, and pathogen populations in, the manure slurry, as well as reduced overall methane emissions [1,2]. Digester effluent (i.e., digestate) can be applied to cropland to improve soil health and provide critical macronutrients [3].…”

Section: Introductionmentioning

confidence: 99%

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Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems

et al. 2023

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Livestock in the state of Iowa, United States (US) produce over 50 × 106 Mg of wet-basis manure yearly. Biogas production from manure’s anaerobic digestion (AD) can reduce greenhouse gas emissions, control odors, and provide renewable energy. Despite these benefits, AD is rarely deployed at swine farms in Iowa. In this work, we explore the economics of AD systems in Iowa to evaluate reasons for low deployment and explore the production cost impacts of biogas cleaning and injection into the natural gas grid, amending manure with biomass, and centralizing digesters across multiple farms. This work presents a static, spreadsheet-based technoeconomic model that embodies literature-based estimates of key system technical parameters, costs, and transportation fuel incentives and permits the examination of various scenarios. Key findings include that under the model assumptions, distributed, farm-scale digesters are not competitive with average natural gas prices in Iowa. A centralized production scenario can be competitive, provided that programs such as the low-carbon fuel standard (LCFS) and the renewable fuel standard (RFS) have sufficiently high credit values.

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Section: Capital Costsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems

et al. 2023

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“…Agro-industrial wastes are one of the important sources for the production of biogas [2]. Biogas, which has a wide range of applications (as a fuel for transport, a source of heat, and a source of electricity), increases the sustainability of agriculture by reducing pollutant emissions [3].…”

Section: Introductionmentioning

confidence: 99%

Magnetite Nanoparticles and Carbon Nanotubes for Improving the Operation of Mesophilic Anaerobic Digesters

Ziganshina

Ziganshin

2023

Microorganisms

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Anaerobic waste processing contributes to the development of the bioenergy sector and solves environmental problems. To date, many technologies have been developed for increasing the rate of the anaerobic digestion process and yield of methane. However, new technological advancements are required to eliminate biogas production inefficiencies. The performance of anaerobic digesters can be improved by adding conductive materials that will act as an electron conductor between bacteria and methanogens. In this study, the effects of the separate and shared use of magnetite nanoparticles and carbon nanotubes in anaerobic digesters converting high-nitrogen-containing waste, chicken manure, were investigated. The tested nanomaterials accelerated the methane production and increased the decomposition of products from the acidogenesis and acetogenesis stages. The combined use of magnetite nanoparticles and carbon nanotubes gavae better results compared to using them alone or without them. Members of the bacterial classes Bacteroidia, Clostridia, and Actinobacteria were detected at higher levels in the anaerobic digesters, but in different proportions depending on the experiment. Representatives of the genera Methanosarcina, Methanobacterium, and Methanothrix were mainly detected within the methanogenic communities in the anaerobic digesters. The present study provides new data for supporting the anaerobic treatment of substrates with a high content of inhibitory compounds, such as chicken wastes.

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Anaerobic Digestion of Swine Manure in Conventional and Hybrid Pilot Scale Plants: Performance and Gaseous Emissions Reduction

Cited by 2 publications

References 0 publications

Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems

Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems

Magnetite Nanoparticles and Carbon Nanotubes for Improving the Operation of Mesophilic Anaerobic Digesters

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