EVALUATION OF HETEROGENEOUS CATALYSTS DERIVED FROM WHITE AND BROWN CHICKEN EGGSHELL FOR SOYBEAN BIODIESEL SYNTHESIS

• DOI: 10.22533/at.ed.25119180221

• Palavras-chave: atena

• Keywords: Biodiesel, Heterogeneous catalysis, eggshell, thermogravimetric analysis.

• Abstract:

  Calcium oxide may be considered

  as a very promising heterogeneous catalyst

  for the biodiesel production, for it has high

  efficiency and it is environmentally friendly. CaO

  can be obtained in a sustainable manner by the

  calcination of the chicken eggshell, since this

  material is rich in calcium carbonate. Although

  there are clear differences between types of

  chicken eggs, published research on the subject

  does not distinguish between white and brown

  eggshells. Thus, the objective of this work was

  to analyze and compare the properties and

  characteristics of the heterogeneous catalysts

  derived from the white and brown eggshell

  obtained in different calcination conditions,

  as well as to evaluate the catalytic capacity of

  these catalysts to produce soybean biodiesel.

  The different raw materials were calcined by

  varying the time parameters: 80, 120, 160

  minutes, and temperature 800, 900 and 1000

  °C. The analysis techniques were DRX, FRX,

  BET and MEV granulometry. Thermal analysis

  (TGA/DTA) was also used to determine the

  conversion to biodiesel. Among the catalysts

  derived from the shell of the chicken egg, the

  white shell calcined at 800 °C in 160 minutes

  showed a higher catalytic potential.

• Número de páginas: 15