Environmental and techno-economic considerations on biodiesel production from waste frying oil in São Paulo city

Filho, Silvério Catureba da Silva; Miranda, Amanda Carvalho; Silva, Thadeu Alfredo Farias; Calarge, Felipe Araújo; Souza, Roberto Rodrigues de; Santana, José Carlos Curvelo; Tambourgi, Elias Basile

doi:10.1016/j.jclepro.2018.02.199

Cited by 59 publications

(49 citation statements)

References 42 publications

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“…All costs and profits are summarized in Tables 6-8. All calculation procedures were presented by Ayanoglu and Yumrutas [1]; Almeida et al [54]; Benvenga et al, [55]; Giraçol et al [56] and Passarini et al [57]. Figure 2 shows the variations of temperatures for the combustion gas (outside), of the inner wall of the reactor and the reaction temperatures of the materials measured during the pyrolysis process.…”

Section: Price Description and Cost Analysismentioning

confidence: 99%

Economic, Environmental and Social Benefits of Adoption of Pyrolysis Process of Tires: A Feasible and Ecofriendly Mode to Reduce the Impacts of Scrap Tires in Brazil

et al. 2019

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This study addressed the development of a pilot plant for pyrolysis of scrap tires to obtain carbon black and other byproducts. The work was motivated by the goal of contributing to the development and dissemination of knowledge about existing technologies that allow modern economies to transform waste into valuable products, by documenting and discussing an empirical application in Brazil. Thispaper describes the development of a market for steel scrap, pyrolytic oil and carbon black products obtained from a vacuum pyrolysis process. The research work was conducted in Brazil, and was guided by the twofold purpose of reducing the environmental impacts, while gaining economical sustainability. Modern economies increasingly need to devise strategies to address energy generation while preserving natural ecosystems. These strategies include leveraging the use of renewable energy sources. Acknowledging that scrap tires hold an enormous potential as a sustainable energy option, this study aimed to contribute to the development and maturity of eco-friendly processing approaches to realize its full potential. The work involved a preliminary phase concerned with the operation of vacuum pyrolysis of scrap tires at a laboratorial scale, followed by the design of the pilot plant that operated for 10 years, at the time of the study, with a 100 kg/h batch flow. Results show that the yield of the pyrolysis process was 41% pyrolytic oil, 38% carbon black, 12% gas, and 8.9% steel scrap, with a calorific value of 36 MJ/kg per tire. The carbon black was composed of 90% carbon, and the pyrolytic oil was composed of 66% gasoline and 33% other oils, which have higher quality and can be commercialized with a potential profit over 3 million dollars/year.

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Section: Price Description and Cost Analysismentioning

confidence: 99%

Economic, Environmental and Social Benefits of Adoption of Pyrolysis Process of Tires: A Feasible and Ecofriendly Mode to Reduce the Impacts of Scrap Tires in Brazil

et al. 2019

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“…Triglycerides are converted into diglycerides and monoglycerides, and finally into glycerol, the main byproduct (Issariyakul and Dalai 2014). Biodiesel can be also produced through the esterification of the free fatty acids (FFA) present in the raw material (da Silva Filho et al 2018).…”

Section: Introductionmentioning

confidence: 99%

A sustainable process for biodiesel production using Zn/Mg oxidic species as active, selective and reusable heterogeneous catalysts

Navas

Ruggera

Lick

et al. 2020

Bioresour. Bioprocess.

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This paper describes the preparation and characterization of MgO and ZnO-based catalysts, pure and mixed in different proportions, supported on γ-Al 2 O 3. Their catalytic performance was studied in the transesterification of soybean oil and castor oil with methanol and butanol, attempting to produce biodiesel. XRD (X-ray diffraction), SEM-EDS (scanning electron microscopy-energy dispersive X-ray spectroscopy), CO 2-adsorption and N 2-adsorption allowed characterizing the prepared catalysts. The characterization results were in all cases consistent with mesoporous solids with high specific surface area. All the catalysts exhibited good results, especially in the transesterification of castor oil using butanol. For this reaction, the reuse was tested, maintaining high FABE (fatty acid butyl esters) yields after four cycles. This good performance can be attributed to the basic properties of the Mg species, and simultaneously, to the amphoteric properties of ZnO, which allow both triglycerides and free fatty acids to be converted into esters. Using these catalysts, it is possible to obtain second-generation biodiesel, employing castor oil, a raw material that does not compete with the food industry. In addition, butanol can be produced from renewable biomass.

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“…In this second paper, they related the variation of the concentration of waste frying oil (WFO) with the reaction time and temperature during the transesterification of WFOs collected in São Paulo. Then, the biodiesel samples were mixed with the S-10 diesel oil in order to obtain the B10, B20, B30, B40, B50, B75, and B100 blends, which were tested in a diesel engine, and their power, fuel consumption, and gas emissions (CO, CO 2 , and SO 2 ) have been measured to verify their greenhouse effect and energy efficiency [26].…”

Section: Waste Cooking Oil or Frying Waste Oil (Wco Or Fwo)mentioning

confidence: 99%

Valorization of Wastes for Biodiesel Production: The Brazilian Case

Nascimento¹,

Oliveira²,

Oliveira³

et al. 2019

Biofuels - Challenges and Opportunities

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This chapter intends to bring an overview about the Brazilian researches and their contributions to the production of biodiesel from wastes. Currently, the main obstacles to spread the use of biodiesel are its high cost of production and the competition between biodiesel and food industries. So, the use of wastes plays an important role in reducing the biodiesel costs and reusing the materials that have no other applications, as deodorization residues, neutralization soap sticks, and animal fats, among others. Then, we present a review about Brazilian studies involving waste oils and fatty-acid-rich raw materials that helped the advancement in this field of knowledge during the last few years.

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Environmental and techno-economic considerations on biodiesel production from waste frying oil in São Paulo city

Cited by 59 publications

References 42 publications

Economic, Environmental and Social Benefits of Adoption of Pyrolysis Process of Tires: A Feasible and Ecofriendly Mode to Reduce the Impacts of Scrap Tires in Brazil

Economic, Environmental and Social Benefits of Adoption of Pyrolysis Process of Tires: A Feasible and Ecofriendly Mode to Reduce the Impacts of Scrap Tires in Brazil

A sustainable process for biodiesel production using Zn/Mg oxidic species as active, selective and reusable heterogeneous catalysts

Valorization of Wastes for Biodiesel Production: The Brazilian Case

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