Improved methane production and energy recovery of post-hydrothermal liquefaction waste water via integration of zeolite adsorption and anaerobic digestion

Li, Ruirui; Liu, Dianlei; Zhang, Yifeng; Duan, Na; Zhou, Jialiang; Liu, Zhidan; Zhang, Yuanhui

doi:10.1016/j.scitotenv.2018.09.175

Cited by 55 publications

(21 citation statements)

References 43 publications

(49 reference statements)

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“…It was reported that 67% of the total organic compounds (TOC) were removed in digested liquid by algae cultivation, thereby greatly reduced the environmental burden [27]. 50.7 and 26% of the carbon of algae could be recovered in the biocrude oil and aqueous phase, respectively [49]. The aqueous phase was reused as a resource in AD for bioenergy production, and nearly 60% of C could be recovered with a corresponding COD remove rate of almost 50%.…”

Section: Resultsmentioning

confidence: 99%

Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Liu

Wang

et al. 2019

IET Renewable Power Generation

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Microalgae using non-arable land were considered as promising biomass for biocrude production through hydrothermal liquefaction (HTL) and can also be used for environmentally-friendly wastewater treatment. In this study, we illuminated the effect of reaction temperature on the products distribution and biocrude properties from HTL of the Chlorella sp. grown in wastewater from anaerobic digestion (AD) of chicken manure via HTL. The highest biocrude yield (30.35%, daf) and energy recovery rate (49.6%) were both achieved at 330 °C, while the highest HHV (37.17 MJ/kg) of biocrude oil was achieved at 290 °C. The biocrude oil yield increased from 25.46 to 30.35% as the temperature increased from 270 to 330 °C. The gases yield showed a similar trend under 310 °C. On the contrary, the solid products yield decreased as the temperature approached 350 °C. The lowest nitrogen content (4.6%) and highest H/C (1.50) of biocrude oil were obtained at 290 and 270 °C, respectively. Results imply that deoxygenation was enhanced with temperature due to the enhanced decarboxylation at higher temperatures. Specially, the nitrogen content decreased by 39.4-47.4% in the temperature range of 270-350 °C. The integrated pathways for energy production and nutrient recycling from animal manure coupling AD/HTL, and algae technologies were further proposed.

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Section: Resultsmentioning

confidence: 99%

Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Liu

Wang

et al. 2019

IET Renewable Power Generation

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“…This will definitely support the overall cost-effective viability and economic possibility of HTL. Recently, Li's research group [33] introduced an integration process of HTL and anaerobic digestion to advance methane production and energy recovery of PHWW from Chlorella. Energy recovery from PHWW was conducted by using zeolite adsorption and anaerobic digestion.…”

Section: Liquefactionmentioning

confidence: 99%

Waste to bioenergy: a review on the recent conversion technologies

et al. 2019

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Scientific studies have demonstrated that it is possible to generate a wide variety of bioenergy from biomass residues and waste, and however its cost is not competitive with petro-fuels and other renewable energy. Ongoing efforts are continued extensively to improve conversion technologies in order to reduce production costs. The present review focuses on the conversion technologies for transforming biomass residues and waste to biofuels, specifically their technological concepts, options and prospects for implementation are addressed. The emerging developments in the two primary conversion pathways, namely the thermochemical (i.e. gasification, liquefaction, and pyrolysis) and biochemical (i.e. anaerobic digestion, alcoholic fermentation and photobiological hydrogen production) conversion techniques, are evaluated. Additionally, transesterification, which appears to be the simplest and most economical route to produce biodiesel in large quantity, is discussed. Lastly, the strategies for direct conversion of biomass residues and waste to bioelectricity including the use of combustion and microbial fuel cells are reviewed.

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“…Sin embargo, esta investigación se ubica en México, se esperaba que el modelo mexicano brindará información aproximada pero confiable de generación de metano. Investigaciones han demostrado el impacto negativo que una incorrecta cuantificación de biogás en un relleno sanitario puede tener en pro-yectos de generación de energía (Judy y col., 2018;Blanco y col., 2018;Li y col., 2018). En consecuencia, los modelos teóricos, particularmente el modelo mexicano de biogás demostró ser poco confiable para generar información preliminar sobre emisiones de metano.…”

Section: Región1unclassified

Eficiencia y confiabilidad de modelos de estimación de biogás en rellenos sanitarios

Escamilla-García

2019

lgr

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Este artículo muestra un análisis comparativo de las emisiones de biogás generadas en un relleno sanitario al aplicar el modelo mexicano de biogás, el modelo de la Agencia de Protección Ambiental de los Estados Unidos de América (EPA) y comparar los resultados con datos obtenidos in-situ. Las estimaciones con los modelos teóricos y la medición en campo se realizaron en 36 pozos de venteo de un relleno sanitario ubicado en el Estado de México, México, con una recepción diaria de 3500 kilogramos de RSU. Los resultaron in-situ mostraron una generación de biogás (CH4, CO2 y O2) con una frecuencia media de 35.44 Hz (1/s) y emisiones de metano de 3355.99 m3 /hr. En contraste los modelos teóricos estimaron valores para el año 2018 de 6270.57 m3/hr para el modelo de la EPA y 8379.52 m3/hr para el modelo mexicano de biogás. Los resultados mostraron variaciones significativas en las estimaciones de los modelos teóricos versus la medición in-situ. La información generada permite discutir la confiabilidad del uso de modelos teóricos para formular proyectos de aprovechamiento y valorización de RSU al considerar los altos montos de inversión que implican y que las proyecciones de generación de energía se basan en la frecuencia de generación del flujo de biogás estimado en el relleno.

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Improved methane production and energy recovery of post-hydrothermal liquefaction waste water via integration of zeolite adsorption and anaerobic digestion

Cited by 55 publications

References 43 publications

Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Hydrothermal conversion of anaerobic wastewater fed microalgae: effects of reaction temperature on products distribution and biocrude properties

Waste to bioenergy: a review on the recent conversion technologies

Eficiencia y confiabilidad de modelos de estimación de biogás en rellenos sanitarios

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