Assessment of the improved performance of magnetite-modified vermiculite in the reduction of BTEX and metals, as well as toxicity in petroleum-produced water

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorSchool of Science and Technology-
Autor(es): dc.creatorBartilotti, Mariana [UNESP]-
Autor(es): dc.creatorViana, Taís S.-
Autor(es): dc.creatorde Oliveira, Danielle P.-
Autor(es): dc.creatorSantos, Elisama V.-
Autor(es): dc.creatorRojas-Mantilla, Hernan D. [UNESP]-
Autor(es): dc.creatorSantos, Mirian C. [UNESP]-
Autor(es): dc.creatorZanoni, Maria Valnice B. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:44:14Z-
Data de disponibilização: dc.date.available2022-02-22T00:44:14Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jwpe.2020.101749-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205402-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205402-
Descrição: dc.descriptionPetroleum-produced water has raised considerable environmental concerns due to the large amount of contaminants-containing wastewater, generated during petrol and gas extraction. The present work proposes for the first time the use of vermiculite modified by magnetite (Fe3O4) nanoparticles (VMT-mag) as adsorbent for the extraction of metals and BTEX (benzene, toluene, ethylbenzene, and xylene) pollutants and toxicity reduction. Thermally-treated vermiculite was modified by Fe3O4 nanoparticles of 20 nm, which were strongly adhered to the surface, contributing to the magnetization of the material and adsorption of the metals. A 5 min exposure of wastewater to VMT-mag at 15 mg mL−1 led to the removal of 93 % of dissolved organic carbon, 85 % of BTEX compounds, and a reduction of 30–87% of metals (Ba, Al, Ag, Hg and Pb) at low concentration. An investigation was also conducted regarding the efficiency of VMT-mag in reducing toxicity via toxicity assays using the water flea Daphnia similis (ABTN NBR 12713 protocol); the results showed a reduction of Lethal Concentration at 50 % death (LC50) from 5.80 (v/v) to 13.3 % (v/v), respectively, for the samples before and after treatment. The findings show that the application of the proposed VMT-mag can lead to a significant reduction of toxicity and the removal of BTEX and metals in petroleum-produced water.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionNational Institute of Science and Technology for Detection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances (INCT-DATREM) in Institute of Chemistry Sao Paulo State University (UNESP)-
Descrição: dc.descriptionUniversty of São Paulo (USP) School of Pharmaceutical Sciences of Ribeirão Preto-
Descrição: dc.descriptionFederal University of Rio Grande do Norte (UFRN) School of Science and Technology-
Descrição: dc.descriptionNational Institute of Science and Technology for Detection Toxicological Evaluation and Removal of Micropollutants and Radioactive Substances (INCT-DATREM) in Institute of Chemistry Sao Paulo State University (UNESP)-
Descrição: dc.descriptionCNPq: 143222/2017-1)-
Descrição: dc.descriptionFAPESP: 2014/50945-4-
Idioma: dc.languageen-
Relação: dc.relationJournal of Water Process Engineering-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBTEX-
Palavras-chave: dc.subjectEmerging pollutants-
Palavras-chave: dc.subjectMagnetite-modified vermiculite-
Palavras-chave: dc.subjectMetals-
Palavras-chave: dc.subjectPetroleum-produced water-
Título: dc.titleAssessment of the improved performance of magnetite-modified vermiculite in the reduction of BTEX and metals, as well as toxicity in petroleum-produced water-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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