Synthesis of low-density polyethylene derived carbon nanotubes for activation of persulfate and degradation of water organic micropollutants in continuous mode

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Rui S. Ribeiro (Autor) FEUP; Octávia Vieira (Autor) Outra; Rita Fernandes (Autor) FEUP; Fernada F. Roman (Autor) Outra; Jose L. Diaz de Tuesta (Autor) Outra; Adrián M. T. Silva (Autor) FEUP; Helder T. Gomes (Autor) Outra

Revista

Título: Journal of Environmental Management

Vol. 308 Nº 114622

Páginas: 1-10

ISSN: 0301-4797

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Projetos Associados

PLASTIC_TO_FUEL&MAT - Upcycling Waste Plastics into Fuel and Carbon Nanomaterials

InSpeCt - Identifying and interrupting micropollutants of EU concern by using Smart Carbon materials

Healthy Waters - Healthy Waters - Identification, Elimination, Social Awareness and Education of Water Chemical and Biological Micropollutants with Health and Environmental Implications

Outras Informações

ID Authenticus: P-00W-1EK

DOI: 10.1016/j.jenvman.2022.114622

Abstract (EN): Plastic derived carbon nanotubes (CNTs) were tested as catalysts in persulfate activation for the first time. Four catalysts were prepared by wetness impregnation and co-precipitation (using Al2O3, Ni, Fe and/or Al) and implemented to grow CNTs by chemical vapour deposition (CVD) using low-density polyethylene (LDPE) as carbon feedstock. A catalyst screening was performed in batch mode and the best performing CNTs (CNT@Ni+Fe/Al2O3-cp) led to a high venlafaxine mass removal rate (3.17 mg g-1 h-1) in ultrapure water after 90 min (even with a mixture of micropollutants). Its degradation increased when the matrix was replaced by drinking water and negligibly affected in surface water. A composite polymeric membrane was then fabricated with CNT@Ni+Fe/Al2O3-cp and polyvinylidene fluoride (PVDF), a high venlafaxine mass removal rate in surface water being also observed in 24 h of continuous operation. Therefore, the results herein reported open a window of opportunity for the valorisation of plastic wastes in this catalytic application performed in continuous mode.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10