Author(s): Trama-Freitas, Bianca [UNESP] ; Franco, Fernanda [UNESP] ; Martins, Rui C. ; Gando-Ferreira, Licínio M. ; Quinta-Ferreira, Maria Emília ; Quinta-Ferreira, Rosa Maria ; do Carmo, Devaney R. [UNESP]
Date: 2020
Persistent ID: http://hdl.handle.net/11449/200446
Origin: Oasisbr
Subject(s): Biosorption; Nickel; Silsesquioxane; Toxicity; Yeast; Biosorption; Biosorption; Nickel; Nickel; Silsesquioxane; Silsesquioxane; Toxicity; Toxicity; Yeast; Yeast
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The presence of heavy metals in water is one of the major concerns in the public health area. So, the characterization of inorganic compounds toxicity and their detection, speciation and removal are some of the biggest environmental challenges today. Within this context, the present work evaluated the effect caused by Ni2+ in neuronal autofluorescence recorded in brain slices. Besides, a bioinorganic nanostructured hybrid material with great potential for heavy metals removal: yeast Saccharomyces cerevisiae modified with Silsesquioxane was applied for Ni2 sorption. The neurotoxicity tests revealed that in the presence of Ni2+ concentrations of 10, 20 and 30 μM (0.5, 1.0 and 1.5 ppm), irreversible autofluorescence changes occurred. In the sorption tests, the hybrid material revealed a maximum capacity of sorption of 64.6 mg/g. This material was able to reach 77.7% of removal of the initial Ni2+ solution using a 100 cm3/g liquid/solid ratio, at pH 6 and 15 min of contact time.
Departamento de Física e Química Faculdade de Engenharia de Ilha Solteira Univ. Estadual Paulista-UNESP, Av. Brasil Centro, 56 CEP 15385-000, Ilha Solteira
Department of Chemical Engineering CIEPQPF- Research Center of Chemical Process Engineering and Forest Products University of Coimbra
Department of Physics and CNC- Center for Neuroscience and Cell Biology University of Coimbra
Departamento de Física e Química Faculdade de Engenharia de Ilha Solteira Univ. Estadual Paulista-UNESP, Av. Brasil Centro, 56 CEP 15385-000, Ilha Solteira
