Mass balance and characterization of bio-oil from sludge pyrolysis generated in the treatment of effluent from the biodiesel industry

Pedroza, Marcelo Mendes; Oliveira, Meriele Cristina Costa Rodrigues de; Paz, Elaine da Cunha Silva; Arruda, Matheus Gomes; Júnior, Joel Carlos Zukowski; Lôbo, Ranyere do Nascimento

doi:10.1007/s10163-022-01478-7

Cited by 1 publication

(2 citation statements)

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“…The content of volatile materials was 38.68%. The increase in temperature in the carbonization treatment causes partial decomposition of organic matter and partial removal of volatiles, expelling them from the interior of the coal, which determines a lower content of volatiles and an increase in in the fixed carbon content at the end of the product as observed in the research (Chen et al, 2014;Pedroza et al, 2022).…”

Section: Characterization Of Activated Carbonmentioning

confidence: 90%

“…In this work, the ash content obtained was of the order of 1.98%. Pedroza et al (2022) determined that ash content has a major influence on the pyrolysis of biomass. According to the authors, the ash content of the biomass favors an increase in the yield of the gaseous fraction and a decrease in the percentage of the liquid fraction, under the operational conditions studied (fluidized bed reactor, bed temperature of 550 ºC, nitrogen gas carrier).…”

Section: Biomass Characterizationmentioning

confidence: 99%

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Production and application of activated carbon obtained from the thermochemical degradation of corn cob

Pedroza,

Machado,

Silva

et al. 2023

JART

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The present work aims to perform the thermal degradation of corn cob for the production of activated carbon, which is used in a column adsorption system for the dechlorination of supply water. The biomass under study and the product generated by pyrolysis in a fixed bed reactor were analyzed using classical methods (moisture, volatile materials, ash and fixed carbon, lignin, cellulose, hemicellulose and apparent density) and instrumental methods (thermogravimetry and CNH). In the pyrolysis process, the following parameters were studied: temperature (360 to 640 oC) and heating rate (13 to 27 oC/min). The reaction time was 30 minutes. The dechlorination test using the activated carbon obtained in this research was carried out in an adsorption column in continuous flow at an average flow rate of 6 mL/min. The iodine number of the adsorbent produced in this research was calculated. The results obtained showed that the carbon content (44%) and the lignin content (28%) point to the use of residual biomass studied in this research for the production of activated carbon via the thermal route. The highest activated carbon yield was 71.12% at a temperature of 360 °C with a heating rate of 20 °C/min. While the minimum yield was 21.6% with a temperature of 600 °C and a heating rate of 25 °C/min. The iodine number of the activated carbon produced at 640 oC was 820 mgI2/g. In the adsorption test, the following coefficients from the Thomas model were obtained: kTH = 0.0093 mL/mg.min and qo = 98 mg/g, when a liquid flow equal to 9.9 mL/min was used. The adsorption capacity of coal is related to the flow rate of the dye solution, being noticed that the higher the liquid flow rate in the column, the higher the adsorbate mass transfer coefficient.

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Section: Characterization Of Activated Carbonmentioning

confidence: 90%

Section: Biomass Characterizationmentioning

confidence: 99%