Improvement of anaerobic digestion of swine slurry by steam explosion and chemical pretreatment application. Assessment based on kinetic analysis

Ortega-Martínez, Eduardo; Zaldivar, Consuelo; Phillippi, Javiera; Carrère, Hélène; Donoso‐Bravo, Andrés

doi:10.1016/j.jece.2016.03.035

Cited by 19 publications

(7 citation statements)

References 34 publications

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“…For manure samples, the effect of HT on gas production was more pronounced by 125 °C treatment, with methane production (over 700 mL/g VS) significantly higher than the 225 °C treatment in this study (Table S2) or other previous results. 44,45 In order to analyze the relationship between methane production and COD removal potential after HT and AD processes, methane production was expressed by equivalent COD consumption (CH 4 -COD). Under standard temperature and pressure, 1 g of COD is consumed to produce 350 mL methane, so the methane production volume of 1 g of COD under different temperatures can be calculated as follows, where V CH 4 is the total volume of biogas (mL), T is the temperature of AD treatment (K), and V is the total volume of AD samples (L).…”

Section: Resultsmentioning

confidence: 99%

Energy and Nutrient Recovery from Sewage Sludge and Manure via Anaerobic Digestion with Hydrothermal Pretreatment

Fang

Huang

Dykstra

et al. 2019

Environ. Sci. Technol.

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Global expectation for sustainability has prompted the transition of practices in wastewater treatment plants toward not only waste management but also energy and nutrient recovery. It has been shown that low-temperature hydrotherm (HT) treatment can enhance downstream biogas production via anaerobic digestion (AD). Yet, because the application of combined HT and AD is still at an early stage, a systematic understanding of the dynamic speciation evolution of important elements is still lacking. This study investigates energy and nutrient recovery from sewage sludge and swine manure via combined HT-AD treatment. Bench-scale investigation was conducted to evaluate biogas production and understand the dynamic evolution of organic carbon (C) and phosphorus (P) speciation. C and P speciations were characterized using complementary chemical and spectroscopic techniques, including 13C nuclear magnetic resonance (NMR) spectroscopy, P X-ray absorption near edge structure (XANES) spectroscopy, and sequential chemical extraction. Results from this study suggest that low-temperature HT pretreatment can achieve enhanced biogas production for sludge compared to the minimal effect on the biogas production from manure. It also provides guidance for P recovery from liquid digestate and solid residue after the AD process.

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Section: Resultsmentioning

confidence: 99%

Energy and Nutrient Recovery from Sewage Sludge and Manure via Anaerobic Digestion with Hydrothermal Pretreatment

Fang

Huang

Dykstra

et al. 2019

Environ. Sci. Technol.

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“…Extraction of the added value phenolic compounds from OMSW is technically and economically complex without carrying out a pretreatment process (Rubio-Senent et al, 2013b). Among the available pre-treatments, steam explosion treatment has been widely proposed as pre-treatment method for different fibrous waste such as swine slurry , reed biomass (Lizasoain et al, 2016), corncob (Zhang et al, 2017), and even OMSW Ortega-Martinez et al, 2016;Rincón et al, 2016). Steam explosion treatment involves high-temperature heating combined with a rapid pressure drop that physically disrupts the lignocellulosic structures turning them into soluble compounds (Capári et al, 2016;Zhou et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Phenols recovery after steam explosion of Olive Mill Solid Waste and its influence on a subsequent biomethanization process

Serrano

Fermoso

Alonso-Fariñas

et al. 2017

Bioresource Technology

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A promising source of high added value compounds is the Olive Mill Solid Waste (OMSW). The aim of this research was to evaluate the viability of a biorefinery approach to valorize OMSW through the combination of steam explosion, phenols extraction, and anaerobic digestion. Steam explosion treatment increased the total phenol content in the steam exploited OMSW, which was twice than that the total phenol content in raw OMSW, although some undesirable compounds were also formed. Phenol extraction allowed the recovery of 2098mg hydroxytyrosol per kg of OMSW. Anaerobic digestion allowed the partial stabilization of the different substrates, although it was not improved by the steam explosion treatment. The economic suitability of the proposed biorefinery approach is favorable up to a phenol extract price 90.7% lower than the referenced actual price of 520€/kg.

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“…Specifically, in Spain, the number of heads was about 27 million [1] generating an annual production about 6.5 Hm 3 of slurries [2]. Pig slurry is a liquid fraction that includes cleaning water, urine and animal feces [3]. The pig livestock farming causes a big environmental problem due to the highly polluting character of the pig slurry.…”

Section: Introductionmentioning

confidence: 99%

Alternatives for the management of pig slurry: Phosphorous recovery and biogas generation

Luján-Facundo

Iborra–Clar

Mendoza–Roca

et al. 2019

Journal of Water Process Engineering

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Pig slurry is highly polluted waste stream characterized by its high nutrients content and its high organic matter concentration. In this research, two alternatives in the management of this wastewater were studied. On the one hand, removal of nutrients from piggery wastewater by struvite precipitation was evaluated. Different molar ratios Mg +2 /PO4 -3 , pH and temperatures were tested. On the other hand, an anaerobic treatment was performed with and without previous struvite crystallization and the methane production was analyzed. Results showed that the optimal experimental conditions to achieve the highest ammonium nitrogen and phosphate removal percentages (62.01% and 66.96%, respectively) were a molar concentration ratio (Mg +2 /PO4 -3 ) of 2.8, pH of 10 and temperature of 22ºC. In addition, images from FE-SEM microscopy demonstrated that the struvite morphology was orthorhombic. Concerning the anaerobic digestion, the chemical oxygen demand removal efficiencies were 59.87% and 52.25% for the treatment without previous struvite precipitation and with previous struvite precipitation, respectively. Furthermore, the maximum biogas potential was found when no previous struvite precipitation was carried out, with a biogas generation around 4 mL•h -1 and a percentage of methane in the biogas between 32.37 and 59.73%.

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Improvement of anaerobic digestion of swine slurry by steam explosion and chemical pretreatment application. Assessment based on kinetic analysis

Cited by 19 publications

References 34 publications

Energy and Nutrient Recovery from Sewage Sludge and Manure via Anaerobic Digestion with Hydrothermal Pretreatment

Energy and Nutrient Recovery from Sewage Sludge and Manure via Anaerobic Digestion with Hydrothermal Pretreatment

Phenols recovery after steam explosion of Olive Mill Solid Waste and its influence on a subsequent biomethanization process

Alternatives for the management of pig slurry: Phosphorous recovery and biogas generation

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