Banca de DEFESA: CARLA OLIVEIRA NASCIMENTO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : CARLA OLIVEIRA NASCIMENTO
DATA : 16/10/2020
HORA: 09:00
LOCAL: videoconferência na plataforma RNP (sala PEI-UFBA)
TÍTULO:

PRODUCTION OF NEW MATERIALS USING CHICKEN BED FOR AGRICULTURAL APPLICATIONS

PALAVRAS-CHAVES:

chicken litter; polymeric composite; toughness; organomineral fertilizer; ceramic materials.

PÁGINAS: 202
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Produção
RESUMO:

Chicken litter is a waste generated during the production of broiler chicken. The production of this waste has grown in recent years and for this reason there is a need to think about alternatives capable of minimizing the environmental impacts related to it. Thus, the objective of this work was to develop new applications for chicken litter, turning this waste into a product. In this sense, organomineral fertilizers with improved properties and a new polymeric composite were produced using chicken litter as a filler. For the production of the fertilizer granules, it was sought to use ceramic materials to increase the hardness, without affecting the agronomic efficiency of the organomineral fertilizers produced. Different percentages (0.5%, 1%, 2% and 3%) of bentonites, kaolinite and magnesium oxide were used in the production of organic phosphate fertilizers composed of Monoammonium Phosphate (MAP) and chicken litter. As for the production of the polymeric composite, succinic acid, 1.4 butanediol and chicken litter were used, in addition to the catalyst for polymerization. In this case, different concentrations of chicken litter (5%, 10%, 20% and 30%) were used in relation to the mass of succinic acid and 1.4 butanediol, base monomers for the production of Poli(butylene succinate) (PBS). The results obtained from the granulation of organomineral fertilizers using ceramic materials showed that the addition of magnesium oxide provided a significant increase (252%) in the hardness of the fertilizer granules without impairing the release of phosphorus, evaluated by means of P plate diffusion experiments Petri test and also by the phosphorus dissolution test in calcium chloride. In addition, the use of ceramic materials did not affect the agronomic efficiency of granulated fertilizers, evaluated through experiments in a greenhouse that lasted 39 days after planting the corn seeds. The production of dry matter and the phosphorus content absorbed by the plant were not affected by the addition of ceramic materials in fertilizer formulations. The polymerization resulted in a heterogeneous product with better resistance to compression, the hardness tests showed that as the concentration of chicken litter in the formulation of the polymeric composite increased, the compressive strength also increased (663% increase with 30% of chicken litter). The chicken litter should act as a reinforcing load, since the presence of this residue was able to improve the mechanical properties of the obtained composite.

MEMBROS DA BANCA:
Externo à Instituição - BRUNO SOUZA FERNANDES
Externo à Instituição - José Carlos Costa da Silva Pinto
Externo à Instituição - June Faria Scherrer Menezes
Presidente - 1568172 - ROSANA LOPES LIMA FIALHO
Externo à Instituição - Rossana Mara da Silva Moreira Thiré
Externo à Instituição - Vinícius de Melo Benites