Influence of the seasonal variation of environmental conditions on biogas upgrading in an outdoors pilot scale high rate algal pond

Marín, David; Posadas, Esther; Cano, Patricia; Pérez, Víctor Alfonsín; Lebrero, Raquel; Muñoz, Raúl

doi:10.1016/j.biortech.2018.01.136

Cited by 40 publications

(13 citation statements)

References 14 publications

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“…Posadas et al [12] evaluated the simultaneous upgrading of biogas and wastewater treatment in a 180 L algal pond using a metallic diffuser and liquid to biogas (L/G) ratios of 0.5, 1.0, 2.0 and 5.0. Marín et al [13,14] evaluated the influence of the seasonal variations of environmental conditions on biogas upgrading performance in a L photobioreactor fed with carbonate supplemented centrate, using a metallic diffuser and L/G ratio of 1.0. Similarly, Rodero et al [15] investigated the influence of biogas flow rate and L/G ratios on biomethane quality in a 9.6 m 3 algal pond using a polymeric membrane diffuser.…”

Section: Introductionmentioning

confidence: 99%

Influence of the diffuser type and liquid-to-biogas ratio on biogas upgrading performance in an outdoor pilot scale high rate algal pond

Marín

Carmona-Martínez

Lebrero

et al. 2020

Fuel

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Four different types of biogas diffusers (metallic of 2 µm, porous stone, and two ceramic membranes of 0.2 and 0.4 µm) were evaluated to improve the quality of biomethane in an outdoor pilot scale photobioreactor interconnected to an external biogas absorption unit. Each type of diffuser was tested independently using three different liquid to biogas (L/G) ratios (0.5, 1 and 2). No significant difference was recorded in the CH4 concentrations of biomethane (i.e. > 93.0%) working with the different types of diffusers at L/G ratios > 1. Only the metallic biogas diffuser supported CH4 concentrations higher than 94.0% at a L/G ratio of 0.5. The increase in L/G ratio induced the stripping of the dissolved N2 and O2 into the biogas, which compensated the decrease in CO2 concentration mediated by the higher pH value of the scrubbing solution. The ANOVA of the results here obtained confirmed that both the type of biogas diffuser and the L/G ratio significantly determined the quality of the upgraded biogas.

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Section: Introductionmentioning

confidence: 99%

Influence of the diffuser type and liquid-to-biogas ratio on biogas upgrading performance in an outdoor pilot scale high rate algal pond

Marín

Carmona-Martínez

Lebrero

et al. 2020

Fuel

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“…Photobioreactor set-up, operation and physicochemical & instrumental procedures are included in the supplementary material of this article (mmc: sections S1, S2 and S3). Macroscopic performance of the system in terms of biogas upgrading and nutrient removal has been previously published by [7,13]. Real digestate, used as a nutrient and water source, was obtained from the sludge anaerobic digester of the wastewater treatment plant (WWTP) of Valladolid (mmc: Text S1).…”

Section: Experimental Set-upmentioning

confidence: 99%

Impact of the algal-bacterial community structure, physio-types and biological and environmental interactions on the performance of a high rate algal pond treating biogas and wastewater

Cantera

Fischer

Sánchez‐Andrea

et al. 2021

Fuel

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“…Biogas is mainly composed of methane (CH 4 ) and carbon dioxide (CO 2 ); minor amounts of ammonia (NH 3 ), hydrogen sulfide (H 2 S), hydrogen (H 2 ), nitrogen (N 2 ), and oxygen (O 2 ); and traces of aromatics, dust particles, halogenated compounds, silicon, siloxanes, and water 6 . Furthermore, biogas composition is both season‐ 7 and feedstock‐dependent 8 . Biogas can also be used for the production of H 2 9–12 .…”

Section: Introductionmentioning

confidence: 99%

Upgrading of sulfur‐containing biogas into high quality fuel via oxidative coupling of methane

Choi

Suh

et al. 2021

Int J Energy Res

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Summary Biogas, which contains methane (CH4), carbon dioxide (CO2), hydrogen sulfide (H2S), and other minor compounds, is a promising energy source and chemical feedstock (not least because it is generated from waste); however, its application as fuel is limited because of its low calorific value, which can be mitigated by upgrading biogas to high‐quality fuels via the oxidative coupling of methane (OCM), a catalytic process that increases its higher heating value from 39.9 (CH4, Wobbe index = 53.5 MJ/Nm3) to 41.7 MJ/Nm3 (OCM product mixture, Wobbe index = 54.4 MJ/Nm3), thus achieving compliance with the fuel standards in many countries (Wobbe index = 45.5‐55.0 MJ/Nm3). Among the compounds produced during OCM, H2S is formed in minor amounts but strongly suppresses biogas valorization, mainly because of potential catalyst poisoning. To understand the effects of sulfur compounds on OCM catalysts, three such catalysts, namely perovskites (SrTiO3 and LaAlO3) and Na2WO4/Mn/SiO2 (NWM), were used to convert biogas into olefins and paraffins. The oxidation of H2S in biogas produced sulfur dioxide, which did not strongly affect NWM but was strongly adsorbed by perovskites and, in turn, significantly reduced their OCM activity. Furthermore, long‐term (100 hours) stability testing demonstrated that the OCM activity of NWM was stable in the presence of H2S. Consequently, the influence of sulfur compounds on the catalysts during the OCM process was elucidated, including catalyst poisoning via sulfur species adsorption. The strategy to suppress the detrimental effects of sulfur poisoning was suggested, which can contribute to the development of feasible process for valorizing biogas to high quality fuels and chemicals.

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Influence of the seasonal variation of environmental conditions on biogas upgrading in an outdoors pilot scale high rate algal pond

Abstract: 12The influence of the daily and seasonal variations of environmental conditions on the 13 quality of the upgraded biogas was evaluated in an outdoors pilot scale high rate algal

Cited by 40 publications

References 14 publications

Influence of the diffuser type and liquid-to-biogas ratio on biogas upgrading performance in an outdoor pilot scale high rate algal pond

Influence of the diffuser type and liquid-to-biogas ratio on biogas upgrading performance in an outdoor pilot scale high rate algal pond

Impact of the algal-bacterial community structure, physio-types and biological and environmental interactions on the performance of a high rate algal pond treating biogas and wastewater

Upgrading of sulfur‐containing biogas into high quality fuel via oxidative coupling of methane

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