Bio-oil production by pyrolysis of metal soaps derived from macauba pulp oil

Melchor, Jhon Jairo; Fortes, Isabel C. P.

doi:10.1016/j.jaap.2018.09.013

Cited by 10 publications

(3 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Biodiesels produced from oilseed fruits Palm fruits 106,107 Olive stones 24,56 Babassu coconut 61,63 Soybeans 25,103,108 Tucumã seeds 20,109,110 Macauba palm 111,112 Ultimate analysis (%) moisture, directly affect the combustion process, altering the heat generation and heat transfer, and reaction rates. 71 However, for Zhao et al 117 and Senneca, 118 the primary air flow rate is the essential parameter in the biofuels combustion process, evaluating the oxygen concentration existing and convection heat transfer.…”

Section: Propertiesmentioning

confidence: 99%

Biofuels from oilseed fruits using different thermochemical processes: opportunities and challenges

Cruz

Silva

et al. 2020

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

The characterization of the physical-chemical properties and the thermal behavior of oilseed fruits for biofuels production has gained interest in the scientific community and society more generally, in particular with regard to their use as partial replacements for fossil fuels and for the possible reduction of air pollutants that cause problems for human health, animals, and plants. These oilseed fruits, which are rich in lipids, triglycerides, fatty acids, carotenoids, and other greasy compounds, can be transformed into solid, liquid, and gaseous products by different thermochemical conversion processes (conventional combustion, pyrolysis, oxy-fuel combustion, gasification and transesterification). This review investigates the different oleaginous feedstocks commonly found in the forests and plantations of Brazil -for example, olive stones, palm fruits, babassu coconut, macauba fruits, tucumã seeds and soybeans, and the respective residues generated from biofuel production and manufacturing processes. The main opportunities and challenges associated with the use of biofuels produced from these oilseed fruits lie in the fact that internal combustion engines using fossil fuels do not need to undergo modifications and mechanical adaptations to operate, and there is no corrosion risk and / or deterioration of metallic parts. Biofuels produce less greenhouse gas, or their pollution is considered neutral. Finally, the native forests of Brazil and the world present a vast number of different oleaginous species that still need be studied because they have excellent potential to be used as biofuels, as they are renewable energy sources and are sustainably eco-friendly.

show abstract

Section: Propertiesmentioning

confidence: 99%

Biofuels from oilseed fruits using different thermochemical processes: opportunities and challenges

Cruz

Silva

et al. 2020

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

show abstract

“…About 75% of the compounds of bio-oil are alkanes, alkenes, naphthenes and aromatics and carboxylic acids with carbon number ranging of 4 to 20 [9]. Although biooil has similar properties to fossil fuels, it can be called green diesel [10], its properties are analyzed and compared with specific standards, standardized for fuels regulated as ASTM D6751- 15 and EN 14214-12. In order to determine the bio-oil quality, the commonly investigated properties are specific mass, viscosity, calorific value, iodine index and acidity index. The crude bio-oil from soybean presented viscosity 3.24 mm²/s, density 889.89 kg/m 3 , iodine index 141.70 mg I2/ g and acid index of 133.33 mg KOH/g [11].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Potential of Ethyl Esterification Reaction Catalyzed by Enzyme to Improve the Quality of Bio-Oil

Luiza Simonato,

Gonçalves,

Eduardo Piske

et al. 2023

RE&PQJ

View full text Add to dashboard Cite

Biomass has been investigated in recent years as an alternative source for fuel production. The use of triglyceride biomass is highlighted and, from the thermal cracking process, solid, liquid and gaseous products with energetic potential are generated. The liquid product, called bio-oil, has characteristics similar those of fossil fuels. Its composition is mainly based on hydrocarbons and carboxylic acids, and the second group generates a limiting characteristic in its processing, refining and use as fuel, increasing the acidity of bio-oil. In this work, bio-oil produced from commercial soybean oil was used in a thermal cracking process at 525ºC. The objective was to carry out ethyl esterification reactions via enzymatic catalysis in order to reduce the acidity index of the crude bio-oil. All reactions were carried out at 40ºC to avoid enzyme deactivation and different conditions of type and amount of catalyst, alcohol mass ratio and reaction time were evaluated. The best result was obtained after 6 hours of reaction with 60% acidity reduction, using Novozym 435 lipase as a catalyst at a concentration of 5% in relation to the substrate mass and 1:3 mass ratio.

show abstract

“…Furthermore, due to the equilibrium between the attenuation of the reforming and WGS processes and the augmentation of the cracking reactions, catalyst deactivation has no appreciable impact on the CO yield in the reforming of the volatiles produced at 500 °C. stretching vibration of ester groups 79 and C−F stretching of fluoro compound, while transmittance peaks at 1219 cm −1 could be assigned to the -COH functional group of phenolic compounds 80 . The bands at 1358 cm −1 and 1427 cm −1 were assigned to the aromatic C=C absorption 81 and O−H bending vibration 82 , respectively.…”

mentioning

confidence: 99%

Sustainable coke-resistant Ca-Al nano-sized catalyst for cogenerating of H2 and high value liquid fuels via pyrolysis catalytic steam reforming reaction of the polystyrene-phenol mixture

Nabgan¹,

Ikram

Alqaraghuli

et al. 2022

Preprint

View full text Add to dashboard Cite

The main challenge of pyrolysis-catalytic steam reforming to convert polystyrene wastes into high value products is the low selectivity and coke formation on the catalyst's surface. This work aims to design a highly catalytic active precious metal-free Ca-Al nanocatalyst, synthesized by impregnation and hydrothermal routes, for the conversion of polystyrene (PS) dissolved in phenol into H2 gas and liquid fuels via pyrolysis-catalytic steam reforming reaction using a well-designed setup reactor. The effect of physicochemical properties of the catalyst on the conversion mechanism. It was found that the catalyst with high γ-Al2O3 content (2Ca3Al) had an excellent overall performance due to its high surface area, sufficient holes uniformly distributed Ca and Al alloy, surface hydroxyl groups, and oxygen vacancies. The obtained phenol conversion and H2 yield of the 2Ca3Al nanocatalyst at 700 oC were 98.5% and 92.5%, respectively. The main detected compounds in the liquid product were tert-Butyl Hydroperoxide (TBH) and Dixanthogen. The relationship between the acidity of the catalyst's surface and the coke formation, which directly influences the performance and deactivation, was investigated. The results showed that the catalyst with higher acidity contents showed weaker resistance against coke formation. The as-prepared catalyst showed excellent performance and anti-coke formation, which would be applied for the simultaneous generation of hydrogen and valuable liquid fuels and the recycling of plastic wastes.

show abstract

Bio-oil production by pyrolysis of metal soaps derived from macauba pulp oil

Cited by 10 publications

References 38 publications

Biofuels from oilseed fruits using different thermochemical processes: opportunities and challenges

Biofuels from oilseed fruits using different thermochemical processes: opportunities and challenges

Evaluation of the Potential of Ethyl Esterification Reaction Catalyzed by Enzyme to Improve the Quality of Bio-Oil

Sustainable coke-resistant Ca-Al nano-sized catalyst for cogenerating of H2 and high value liquid fuels via pyrolysis catalytic steam reforming reaction of the polystyrene-phenol mixture

Contact Info

Product

Resources

About