Please use this identifier to cite or link to this item: http://hdl.handle.net/10216/110838
Author(s): barbosa, d
Teresa Augusto
augusto, pa
Title: The fate of nanomaterials
Issue Date: 2018-02-04
Abstract: Nanoscience is one of the most newsworthy research and development area in modernscience and industry. Todays manufacturing and application of nanomaterials in a wide range ofareas bring specific issues related to handling of waste containing nanomaterials. The outbreakthat has occurred in the proliferation of so many different engineered nanomaterials (ENM) createstoday a big issue to regulators in what concerns hazard identification and environmental/ healthlegislation [1]. Although the majority of the scientific community is yet unwilling to talk about it, is ofthe upmost importance to highlight problems related to uncontrolled release of nanoparticles to theenvironment through waste disposal, and to introduce the topics of nanowaste and toxicology ofnanoparticles into the waste management. Some studies associated with usage, precautions,safety and risk perceptions related to ENM were made in some companies [2], and the resultssuggest that there is insufficient information to establish specific regulations.In order to evaluate the risks inflicted by the use of nanomaterials in commercial products, andeven more important, in environmental applications, is urgent to understand their mobility,bioavailability, and ecotoxicity [3]. The main concern of ENM lies in their toxicology and in theastonishing level of ENM production in the world that leads to an increasing debate on their effectson human occupational settings and on the environment. As a consequence of the increasingproduction of NMs of all types and the potential for their release in the environment, their toxicityneeds to be addressed. In doing so, it is necessary first to determine the fate and behavior ofmanufactured NMs in the environment. However, the mechanism of toxicity is still unclear andbiocompatibility varies depending on numerous parameters, such as nanoparticle size and shape,surface properties, applied nanoparticle concentration, type of cell and nanomaterial. The toxicityof nanomaterials is often linked to their extremely small size; smaller particles have a greaterreactive surface area and are more chemically reactive and produce greater numbers of reactivespecies, including free radicals [4]. Their high chemical reactivity and their greater capacity topenetrate biological membranes also pose serious new toxicity risks. There are now on the globalmarket over 720 products that contain nanomaterials.Is urgent to wake-up for this new problem, that although with very small visibility (nano size), it willbecome very quickly a huge problem if we dont take the necessary attention.The present work is a review of scientific results on the fate and potential negative impact ofengineered nanoparticles on the environment.
Subject: Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
URI: http://hdl.handle.net/10216/110838
Source: 2nd IEEE Conference on Advances in Magnetics
Related Information: info:eu-repo/grantAgreement/Comissão de Coordenação e Desenvolvimento Regional do Norte/P2020|Norte2020-Projetos Integrados ICDT/NORTE-01-0145-FEDER-000005/LEPABE-2-ECO-INNOVATION/LEPABE-2-ECO-INNOVATION
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Projetos Estratégicos/UID/EQU/00511/2013 - POCI-01-0145-FEDER-006939/Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
Document Type: Resumo de Comunicação em Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Resumo de Comunicação em Conferência Internacional

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