Banca de DEFESA: ALI HASSAN KHALID

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ALI HASSAN KHALID
DATE: 30/03/2023
TIME: 14:00
LOCAL: remota
TITLE:

 

BIOENERGETIC PROPERTIES AND A PRACTICAL OPENING DEVICE FOR THE BRAZIL NUTSHELL

KEY WORDS:

Higher Calorific Value, Bioenergy, Lignocellulose, Pyrolysis, Mechanics, Kinetics

PAGES: 40
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUMMARY:

The Brazil Nut is one of the main non-timber exports from the Amazon, with 85% of the fruit consisting of residues. The Amazon community harvesting these nuts could benefit from the sustainable use of such biomass. This work comprises of three stages: (i) to review current research and technologies for the sustainable potential of Brazil Nut residues, (ii) to design and produce a device capable of helping the local communities to debark the Brazil Nuts easily, and (iii) to evaluate the energy potential of biomass and charcoal from both fresh and degraded Brazil Nutshell (BNS) mesocarp. The literature review showed that Brazil Nut residues are suitable for conversion into many bioproducts and biofuels. However, carbonization is applied nowadays. The current method for carbonizing BNS residues leaves a lot of the residue partially carbonized, which decreases the market value. This undesired result is mainly because the shape of residues harms carbonization. Since Brazil nutshell has remarkable physical properties and strength, it is difficult to cut them into a suitable shape for traditional carbonization. Therefore, a device has been designed in this work for the quick, safe, and efficient cutting of the BNS for later carbonization without harming the edible nuts. The device itself is basically a modification for the Miter Saw Vonder Sev857 to hold and cut open Brazil nuts. The device is in the assembling stage for later testing. Fresh BNS mesocarp samples presented a higher calorific value of 4797 kcal/kg, while degraded BNS mesocarp samples showed a lower calorific value of 4600 kcal/kg. Thermogravimetric analysis indicated that fresh and degraded BNS mesocarp samples are suitable for carbonization and have energy potential, but they behave differently providing charcoals with different quality. Overall, degradation of the nutshells in the forest floor decreases their energy quality.

BANKING MEMBERS:
Interno - 741.673.590-49 - GUSTAVO SCHWARTZ - EMBRAPA
Presidente - 2410727 - LINA BUFALINO
Externo à Instituição - MATHEUS CORDAZZO DIAS
Externo à Instituição - TIAGO MARCOLINO DE SOUZA