Banca de QUALIFICAÇÃO: GABRIELA PAUPITZ MENDES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : GABRIELA PAUPITZ MENDES
DATA : 30/05/2018
HORA: 08:00
LOCAL: Auditório do NUPEG
TÍTULO:

Tratability studies of contaminated soil with naphthalene applying chemical oxidation and sorved, aqueous and vapor phases analyses


PALAVRAS-CHAVES:

AOP, persulfate, soil remediation, PAHs, naphthalene.


PÁGINAS: 80
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
SUBÁREA: Processos Industriais de Engenharia Química
ESPECIALIDADE: Processos Orgânicos
RESUMO:
Soil contamination by polycyclic aromatic hydrocarbons (PAHs) is a worldwide discussed subject. Naphthalene (NAP) is a PAH and is among the 16 priority pollutants listed by the United States Environmental Protection Agency (USEPA). Advanced oxidative processes can be applied for remediation of PAH contaminated areas through the use of chemicals such as sodium persulfate. This oxidant can be activated by either alkaline medium or ferrous iron, among other forms. The aim of this work was the evaluation of treatability tests through chemical oxidation in sandy soil artificially contaminated with naphthalene. According to the factorial design applied, the reaction optimum conditions were: [PS] = 18.37 g L-1, [FeSO4] = 4.25 g L-1 and pH = 3.00. 82.61±1.19% of NAP removal was achieved. During the tests, sorbed, aqueous and vapor phases were analyzed. More than 60% of the NAP in the system was transferred to the vapor phase at the beginning of the process. At the end of the reaction, more than 99% of the NAP present in the vapor was removed. Regarding the NAP concentration in the soil, it was possible to reach levels below the intervention value stipulated by the Environmental Company of São Paulo (CETESB). First order reaction fit accurately the kinetic series of experimental data, estimating a degradation constant rate of 0.0159±0.0007 min-1.


MEMBROS DA BANCA:
Interno - 1670497 - HUMBERTO NEVES MAIA DE OLIVEIRA
Externo ao Programa - 214.141.303-68 - MARIA CARLENISE PAIVA DE ALENCAR MOURA - FURG
Presidente - 1149554 - OSVALDO CHIAVONE FILHO
Notícia cadastrada em: 17/05/2018 04:47
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