Título: | ELECTROKINETIC REMEDIATION FOR SEDIMENTS OF CAMORIM LAGOON | ||||||||||||
Autor: |
ALEJANDRA DANIELA DELGADO VALLEJO |
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Colaborador(es): |
JOSE TAVARES ARARUNA JUNIOR - Orientador RODRIGO FERNANDES MAGALHAES DE SOUZA - Coorientador |
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Catalogação: | 28/ABR/2025 | Língua(s): | ENGLISH - UNITED STATES |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=70154&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=70154&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.70154 | ||||||||||||
Resumo: | |||||||||||||
Electrokinetic remediation, effective for low-permeability sediments, can
simultaneously remove both organic and inorganic contaminants. This study
investigated its application to dredged sediments from Camorim Lagoon
(Jacarepaguá lagoon complex, Rio de Janeiro), known to be contaminated with
potentially toxic metals (chromium, copper, lead, zinc, and nickel). A buffer
solution-controlled pH changes, while the complexing agent
ethylenediaminetetraacetic acid (EDTA) and humic substances facilitated metal
desorption and removal. Treatments utilizing EDTA (EK2 and EK3) achieved
lower final concentrations of zinc and lead. Notably, EK1 (freshwater only)
achieved the lowest nickel concentration observed in the anodic section. EK1
also achieved the lowest copper concentration; however, none of the treatments
reached regulatory limits for copper. Chromium, being the least mobile metal,
accumulated in the middle section for all treatments. Electrokinetic remediation
demonstrated significant variability in the effectiveness of the evaluated
electrolytes, depending on the specific contaminant element present in the
dredged sediments.
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