Supercritical Water Gasification of glycerol: Continuous reactor kinetics and transport phenomena modeling

Salierno, Gabriel; Marinelli, Fabrizio; Likozar, Blaž; Ghavami, Niloufar; Blasio, Cataldo De

doi:10.1016/j.ijheatmasstransfer.2021.122200

Cited by 15 publications

(4 citation statements)

References 64 publications

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“…The main product gases obtained were CO and H2, but CO2 and H2O were observed along the drop tube gasifier. The production of CO2 and H2O with syngas is consistent with several reports of the experimental gasification of different feedstocks [34,35]. The center line progression of the gaseous species showed that the H2 and CO showed a general increasing trend in the gasifier.…”

Section: High Fidelity Modelling Of Glycerol Conversionsupporting

confidence: 90%

Assessment of glycerol gasification: devolatilization kinetics and parametric analysis

et al. 2023

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The forecasted need for diesel fuel continues to rise, and likewise the competitive biodiesel demand in the middle to long term future remains promising. Unfortunately, biodiesel production generates a significant amount of crude glycerol with the byproduct typically exceeding 10% of the biodiesel produced. The current glycerol market cannot accommodate the use of waste crude glycerol; therefore, an alternative solution is needed for the utilization of the crude glycerol and gasification is a potential pathway. In this work, the technical feasibility of gasification of crude glycerol is assessed at two levels, equilibrium modeling which was conducted under ideal conditions, and high-fidelity reactive flow modeling in a tubular reactor. Results revealed that elevated steam ratios are required for the gasification of glycerol to reach high conversion rates of 99% and an acceptable cold gasification efficiency of 40%. Although this value is far off from the conventional coal gasification that hovers around 60%, the anlysis suggests that gasification of crude glycerol can be accepted as an intermediate solution to the expected flood of glycerol generated by the biodiesel transesterification industry before becoming a waste burden.

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Section: High Fidelity Modelling Of Glycerol Conversionsupporting

confidence: 90%

Assessment of glycerol gasification: devolatilization kinetics and parametric analysis

et al. 2023

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“…The mechanism of hydrothermal gasification of human and animal waste is still unclear. Although some researchers have documented the reaction mechanism of liquid feedstock decomposition such as glycerol in supercritical water [78]. Problems such as corrosion issues, reactor material durability, waste heat utilization, safety and risk associated with extreme reaction conditions.…”

Section: Of 48mentioning

confidence: 99%

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials and Value-Added Chemicals

Okolie¹,

Jimoh²,

Akande³

et al. 2023

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Human and animal waste, including waste products originating from human or animal digestive systems such as urine, feces, and animal manure, have constituted a nuisance to the environment. Inappropriate disposal and poor sanitation of human and animal waste often cause negative impacts on human health through contamination of the terrestrial environment, soil, and water bodies. Therefore, it is necessary to convert these wastes into useful resources to mitigate their adverse environmental effect. The present study provides an overview and research progress of different thermochemical and biological conversion pathways for the transformation of human- and animal-derived waste into valuable resources. The physicochemical properties of human and animal waste are meticulously discussed as well as nutrient recovery strategies. In addition, a bibliometric analysis is provided to identify the trends in research and knowledge gaps. The results reveal that the U.S.A, China and England are the dominant countries in the research areas related to resource recovery from human or animal waste. In addition, researchers from the University of Illinois, the University of California Davis, the Chinese Academy of Science and Zhejiang University are front runners in research related to these areas. Future research should be centred on developing technologies for the on-site recovery of resources, exploring integrated resource recovery pathways, and exploring different safe waste processing methods.

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“…The mechanism of hydrothermal gasification of human and animal waste is still unclear. Although some researchers have documented the reaction mechanism of liquid feedstock decomposition, such as glycerol in supercritical water [63]. Problems such as corrosion issues, reactor material durability, waste heat utilization, A summary of the studies related to heterogeneous catalyzed gasification of human and animal waste, kinetics studies, and process integration studies is presented in Table 5.…”

Section: Gasificationmentioning

confidence: 99%

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials, and Value-Added Chemicals

et al. 2023

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Human and animal waste, including waste products originating from human or animal digestive systems, such as urine, feces, and animal manure, have constituted a nuisance to the environment. Inappropriate disposal and poor sanitation of human and animal waste often cause negative impacts on human health through contamination of the terrestrial environment, soil, and water bodies. Therefore, it is necessary to convert these wastes into useful resources to mitigate their adverse environmental effect. The present study provides an overview and research progress of different thermochemical and biological conversion pathways for the transformation of human- and animal-derived waste into valuable resources. The physicochemical properties of human and animal waste are meticulously discussed, as well as nutrient recovery strategies. In addition, a bibliometric analysis is provided to identify the trends in research and knowledge gaps. The results reveal that the USA, China, and England are the dominant countries in the research areas related to resource recovery from human or animal waste. In addition, researchers from the University of Illinois, the University of California Davis, the Chinese Academy of Sciences, and Zhejiang University are front runners in research related to these areas. Future research could be extended to the development of technologies for on-site recovery of resources, exploring integrated resource recovery pathways, and exploring different safe waste processing methods.

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Supercritical Water Gasification of glycerol: Continuous reactor kinetics and transport phenomena modeling

Cited by 15 publications

References 64 publications

Assessment of glycerol gasification: devolatilization kinetics and parametric analysis

Assessment of glycerol gasification: devolatilization kinetics and parametric analysis

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials and Value-Added Chemicals

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials, and Value-Added Chemicals

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