Synergestic effect in the steam co-gasification of olive pomace, coal and petcoke: Thermogravimetric-mass spectrometric analysis

Puig-Gamero, M.; Lara-Díaz, J.; Valverde, J.L.; Sánchez, Paula; Sánchez-Silva, L.

doi:10.1016/j.enconman.2018.01.011

Cited by 43 publications

(22 citation statements)

References 62 publications

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“…The identified compounds were classified into the following groups: alcohols, aldehydes, alkanes, carboxylic acids, cyclic hydrocarbons, ketones, esters, nitrogen compounds, phenols and sugars (see Supporting Information Table S1). In order to better understand these results, a scheme of the possible reaction mechanism for cellulose, hemicellulose and lignin during fast pyrolysis, based on the literature, 3,25 is shown in Fig. 6(A).…”

Section: Resultsmentioning

confidence: 99%

Fast pyrolysis as an alternative to the valorization of olive mill wastes

et al. 2020

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BACKGROUND The valorization of organic wastes through fast pyrolysis appears to be a highly promising option for decreasing pollutants and reducing consumption of natural resources. For this purpose, three different olive pomace samples were studied to determine how olive crop location and the extraction process could influence bio‐oil product distribution. Olive pomace was selected as the feedstock due to the importance of the olive oil industry in Spain. RESULTS In this study, the conditions of fast pyrolysis were optimized using lignin as a reference, with the optimum conditions being 500 °C, 20 °C ms−1 as the heating rate and 15 s as the vapour residence time. The olive pomace results determined that not only their chemical composition, but also their fat content had a remarkable effect on product distribution obtained after fast pyrolysis. However, whereas high lignin content enhanced phenol production, cellulose decomposed to carboxylic acids. In addition, due to current global warming, the carbon dioxide (CO2) burden of the three samples was calculated using mass spectroscopy. The OPGC sample gave off the lowest amount of greenhouse gases, followed by OPMNE and OPMN. CONCLUSIONS The higher fat content in the sample enhanced carboxylic acid production. The difference in phenol production between OPMN and OPMNE could be attributed to the presence of potassium. From an environmental point of view, the use of olive pomace wastes could reduce CO2 emissions with further research and by developing experimental processes. © 2020 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Fast pyrolysis as an alternative to the valorization of olive mill wastes

et al. 2020

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“…Modernizing waste management and giving up the accumulation and burial of waste in favor of its processing and reuse requires an intermediate stage of waste treatment in the next 20-30 years. Within this period, the technologies of industrial recovery of waste by burning it for the production of electricity and heat will be in high demand [15][16][17][18]. Implementing such technologies will reduce the growing amount of waste at landfills.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is a relevant task to develop industrial technologies to recover large amounts of MSW. The most efficient solution to this task is combustion of waste to produce power [16,17,19,20], e.g., at trash incineration plants. However, the construction and operation of technically sophisticated industrial facilities using MSW direct combustion are commercially unviable [21].…”

Section: Introductionmentioning

confidence: 99%

Switching Coal-Fired Thermal Power Plant to Composite Fuel for Recovering Industrial and Municipal Waste: Combustion Characteristics, Emissions, and Economic Effect

2020

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Combustion characteristics were studied experimentally for single droplets of fuel slurries based on wet coal processing waste with municipal solid waste components (cardboard, plastic, rubber, and wood) and used turbine oil. We established the ignition delay time for three various groups of fuel compositions in motionless air at 600–1000 °C. The minimum values are 3 s, and the maximum ones are 25 s. The maximum temperatures in the droplet vicinity reach 1300 °C during fuel combustion for compositions with 10% of used oil. The combustion temperatures of fuel compositions without oil are 200–300 °C lower. The concentrations of anthropogenic emissions in flue gases do not exceed those from dry coal combustion. Adding used oils to composite fuels reduces the concentrations of dioxins and furans in flue gases when municipal solid waste in the fuel burns out due to high combustion temperatures. Based on the experimental research findings, we have elaborated a strategy of combined industrial and municipal waste recovery by burning it as part of composite fuels, as illustrated by three neighboring regions of the Russian Federation with different industrial structures and levels of social development. This strategy suggests switching three typical coal-fired thermal power plants (one in each of the regions) to composite liquid fuel. It will reduce the hazard of waste to the environment and decrease the consumption of high-quality coals for power generation. Implementing the developed strategy for 25 years will save 145 Mt of coal and recover 190–260 Mt of waste. The positive economic effect, considering the modernization of fuel handling systems at thermal power plants and the construction of a fuel preparation plant, will make up 5.7 to 6.9 billion dollars, or 65–78%, respectively, of the main costs of three thermal power plants operating on coal within the identical period.

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“…Puig-Gamero et al compared the gasification of olive pomace, coal, petcoke and binary or triple mixtures. The maximum H 2 /CO ratio of pomace-petcoke mixture, coal and olive pomace was determined as 0.0250, 0.0145, 0.00611, respectively [11].…”

Section: Introductionmentioning

confidence: 95%