Banca de DEFESA: JOSUÉ SANTIAGO DE ALMEIDA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSUÉ SANTIAGO DE ALMEIDA
DATE: 20/12/2019
TIME: 08:00
LOCAL: 3B1
TITLE:

Thermocatalytic degradation of HDPE and PP using zeolites H-Y and H-Beta for liquid fuel production.

 

KEY WORDS:

Thermocatalytic degradation; Catalysts; Zeolites; HDPE and PP.

PAGES: 75
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUMMARY:

The problem of environmental pollution caused by the inadequate disposal of plastics in the environment has become the subject of several discourses among researchers the last decades. Polymers, which are essential  in many industries, have low biodegradability, whose degradation time can vary from a few decades to several hundred years.

In recent years, one of the alternatives that has drawn researchers' attention to try to overcome this problem concerns the thermocatalytic degradation of thermoplastic materials. This type of process aims to generate low molecular weight and high added value compounds such as hydrocarbons with carbon chain size similar to fossil fuels.

In this study, high density polyethylene (HDPE) and polypropylene (PP) samples were subjected to thermal (without catalysts) and thermocatalytic degradation using the HY and H-Beta zeolites in a thermogravimetric balance and a reactor. For thermogravimetric analyses, the kinetics chemistry, such as activation energy, and for tests with reactor, the products were collected and further analyzed by gas chromatography, with for a test of the composition of the distribution of the carbon chains of the formed products. Zeolitic materials were characterized by X-ray diffractometry, X-ray fluorescence, scanning electron microscopy and n-butylamine desorption acidity assays.

From the results obtained, it can be concluded that it is possible to generate hydrocarbon fractions in the range of gasoline and diesel in the two thermal degradation processes. However, the use of zeolitic catalysts, in addition to decreasing the degradation temperature, contributes to the final product having a distribution of smaller carbon chains, getting closer to gasoline.

BANKING MEMBERS:
Presidente - 1149328 - VALTER JOSE FERNANDES JUNIOR
Externo ao Programa - 350509 - ANTONIO SOUZA DE ARAUJO
Externa à Instituição - CAMILA GISELE DAMASCENO PEIXOTO MORAIS - IFPA
Externo à Instituição - GLAUBER JOSE TUROLLA FERNANDES - UNP