Banca de QUALIFICAÇÃO: RUTE DAL COL

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : RUTE DAL COL
DATA : 07/12/2020
HORA: 14:00
LOCAL: Remota
TÍTULO:

EVALUATION OF THE EFFICIENCY OF MORINGA OLEIFERA AS A NATURAL COAGULANT OF THE ORGANIC MATTER IN THE PRE-TREATMENT OF WATER FROM WATERFALLS

PÁGINAS: 110
GRANDE ÁREA: Outra
ÁREA: Multidisciplinar
RESUMO:

Water for human consumption must have microbiological, physical and chemical characteristics that meet drinking standards, that is, free of pathogenic microorganisms and contaminants. For this, several treatment steps are necessary, including coagulation, flocculation, sedimentation, filtration and disinfection. Aluminium sulfate is an efficient chemical coagulant used on a large scale in the coagulation/flocculation/sedimentation stage; however, it presents some risk level to health and the environment, since several studies have shown the association of this metal with Alzheimer's disease, and the sludge produced in this stage is not biodegradable and needs to be treated to be discarded or reused. Based on the life cycle impact assessment for the treatment processes with Moringa oleifera and aluminium sulfate, and the analysis of the reduction of apparent colour, turbidity, alteration of pH and alteration of dissolved organic carbon, in samples of raw water prepared by mixing peat and distilled water, and treated with a saline extract from Moringa oleifera seed, and with aqueous aluminium sulfate solution in various dosages with different amounts of product, it was possible to conclude that the viability of using Moringa oleifera as a natural alternative to the chemical coagulant aluminium sulfate. The first achieved 85 ± 2% colour removal and 96.2 ± 0.2% turbidity removal, without changing the pH and dissolved organic carbon, against 72 ± 3% colour removal and 86.1 ± 0.8% removal of turbidity, without alteration of the dissolved organic carbon, but with a pH reduction of around 36% for aluminium sulfate. 

MEMBROS DA BANCA:
Presidente - Interno ao Programa - 1671275 - DERVAL DOS SANTOS ROSA
Membro Titular - Examinador(a) Interno ao Programa - 1646410 - ROSELI FREDERIGI BENASSI
Membro Titular - Examinador(a) Externo ao Programa - 2357551 - CAMILA CLEMENTINA ARANTES
Membro Suplente - Examinador(a) Interno ao Programa - 2342998 - RODRIGO DE FREITAS BUENO
Membro Suplente - Examinador(a) Interno ao Programa - 1814655 - LUCIA HELENA GOMES COELHO