Mechanical Pre-treatments Evaluation of Cattle Manure Before Anaerobic Digestion

Fernandez, Helen Coarita; Franco, Rúben Teixeira; Bayard, Rémy; Buffière, Pierre

doi:10.1007/s12649-020-01022-4

Cited by 29 publications

(11 citation statements)

References 37 publications

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“…It is known the mechanical pre-treatments (such as the one used in this study) can break down complex organic compounds, increasing their solubilization, leading to an increment of methane production. 91–93 To assess the effect of mechanically pre-treating the fresh FVP, the FVPP BMP th values were converted to their original matter by considering the dilution factor (1 : 4). The converted values ranged between 1547.6 and 1861.6 mL CH 4 g TSV −1 which is considerably higher than the BMP th values of FVP (ranging from 410 to 412 mL CH 4 g TSV −1 ), meaning that the mechanical pre-treatment of FVP increases methane production by four times.…”

Section: Resultsmentioning

confidence: 99%

Cold-pressed fruit and vegetable juice pomaces: decision making about their suitability for anaerobic digestion

Lopes

Fragoso

Duarte

2022

Sustainable Energy Fuels

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Section: Resultsmentioning

confidence: 99%

Cold-pressed fruit and vegetable juice pomaces: decision making about their suitability for anaerobic digestion

Lopes

Fragoso

Duarte

2022

Sustainable Energy Fuels

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“…Except for sandpaper to a stainless steel plate, the other combinations of mechanical pretreatment showed degradability of the fibres, with the highest degradability coming from a combination of sandpaper to sandpaper with methane enhancement of 15%-45%. Similarly, Fernandez et al 68 used size reduction via blending, mixing, and shredding before AD, with an 18% increase in CH 4 yields with blending. Meanwhile, the milling of DCM by Khan and Ahring 43 yielded an increase of 9% in methane.…”

Section: Mechanical Pretreatmentmentioning

confidence: 99%

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Nadan

Baroutian

2023

J of Chemical Tech & Biotech

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The continuing increase in dairy cattle farming poses a significant threat to the environment due to the release of greenhouse gases (GHG) from uncontrolled manure generation. Waste valorisation of dairy cow manure (DCM) through anaerobic digestion (AD) provides an avenue for simultaneously managing DCM and mitigating climate change through renewable energy. This review provides an overview of DCM production and the potential use of the AD processes for waste management and renewable energy generation in Fiji. Fiji dairy farms are geographically unevenly distributed and have considerably small herd sizes. With pretreatment techniques, biogas production from DCM at these farms has the potential to be optimised, economically feasible, and viable. Biogas production from DCM can be enhanced by approximately 125% with pretreatment techniques. Hence, this study reviews various pretreatment methods, their economic and environmental benefits, and AD's general challenges and limitations. This research reveals a need for further investigation into the optimisation of biogas and bio-methane potential of DCM, specifically with the economic viability and the environmental considerations of implementing these techniques at Fijian dairy farms.

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“…The raw materials for biogas can be obtained from agricultural wastes such as cattle manure (CM). This latter is widely used as a substrate in anaerobic digestion because of its richness in microorganisms with high methanogenic potential, which can enhance the process and the biogas yield of AD [10,11]. The application of microbial inocula in anaerobic digestion could be a good approach to accelerate the anaerobic digestion of CM through the activity of microorganisms involved in biogas generation.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Digestion of Agricultural Waste Using Microbial Inocula: Performance and Characterization of Bacterial Communities Using 16S rRNA Sequencing Approach

et al. 2023

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Anaerobic digestion is considered a beneficial treatment for biogas production (BP). To improve the performance of this bioprocess, the addition of well-selected inocula could be an interesting approach that affects the overall efficiency of the BP. In this study, the reactor performance and energy analysis of liquid-state anaerobic digestion of cattle manure (CM) at high solids concentration (TS%) (94.87%) with six different inocula—two cellulosic (C.I1, C.I2), one lipidic (Li.I), two lactic (La.I1, La.I2), and one saccharidic (Sacc.I)—were investigated. The results showed that inocula improved the biogas production and yield during anaerobic digestion of CM by 109%, 86%, and 52.4%, respectively, when the cellulosic (C.I1), lipidic (Li.I), and lactic (La.I1) inocula were added, compared with the substrate production alone at a substrate/inoculum (S/I) ratio of 5:3 (v/v). The addition of inocula in an appropriate range is useful for the performance of the anaerobic digestion process. In our study, the 16S rRNA sequencing approach was followed to investigate microbial community structure and diversity in the substrate CM and the three inocula that showed a significant improvement in biogas production (C.I1, Li.I, and La.I). The most abundant bacterial populations were found to be Firmicutes, Bacteroidetes, Proteobacteria, and Actinobacteria, with different abundance percentages. Interestingly, C.I1, which resulted in the highest biogas production, showed the dominance of Cyanobacteria (53.44%) belonging mainly to the class Nostocophycidae. This study highlighted the role of inocula in improving biogas production from cattle manure (CM) thanks to their microbial diversity.

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Mechanical Pre-treatments Evaluation of Cattle Manure Before Anaerobic Digestion

Cited by 29 publications

References 37 publications

Cold-pressed fruit and vegetable juice pomaces: decision making about their suitability for anaerobic digestion

Cold-pressed fruit and vegetable juice pomaces: decision making about their suitability for anaerobic digestion

Prospective of pretreatment and anaerobic digestion of dairy cow manure in Fiji

Anaerobic Digestion of Agricultural Waste Using Microbial Inocula: Performance and Characterization of Bacterial Communities Using 16S rRNA Sequencing Approach

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