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Browsing by Subject "Engineered nanomaterials"

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An analysis of engineered nanomaterial characteristics reported in aquatic nanotoxicity studies: 2004-2013

Author: Thwala, Melusi ; Mahaye, N ; Schaefer, Lisa M ; Musee, N Date: Apr 2014 In this study, we employed bibliometric techniques to analyse engineered nanomaterials (ENMs) characterization data published in peer-reviewed aquatic nanoecotoxicity hosted in the International Council on Nanotechnology (ICON) and Web of ... Read more
Antibacterial effects of engineered nanomaterials: implications for wastewater treatment plants

Author: Musee, N ; Thwala, Melusi ; Nota, N Date: May 2011 Nanotechnology is currently at the forefront of scientific research and technological developments that have resulted in the manufacture of novel consumer products and numerous industrial applications using engineered nanomaterials (ENMs). ... Read more
Application of Bayesian Network modeling on the stability and toxicity of engineered nanomaterials in aquatic ecosystems

Author: Ondiaka, M ; Musee, N ; Aldrich, C ; Chimphango, A Date: Aug 2013 The stability of engineered nanomaterials (ENMs) in the aquatic systems influences their eventual interactions with aquatic biota – and subsequently the observed toxic effects. Increasing data suggests that physicochemical properties of ENMs ... Read more
Application of modeling tools for risk assessment of engineered nanomaterials in aquatic systems

Author: Ondiaka, M ; Musee, N ; Aldrich, C Date: Apr 2012 Globally, engineered nanomaterials (ENMs) are increasingly being used in nanoproducts to improve their performance. The multi-stage lifecycle of ENMs increases their potential risk profiles to different environmental systems, for example, due ... Read more
Aquatic toxicity effects and risk assessment of ‘Form Specific’ product-released engineered nanomaterials

Author: Lehutso, Raisibe F ; Wesley-Smith, J ; Thwala, Melusi Date: Nov 2021 The study investigated the toxicity effects of ‘form specific’ engineered nanomaterials (ENMs) and ions released from nano-enabled products (NEPs), namely sunscreens, sanitisers, body creams and socks on Pseudokirchneriella subcapitata, ... Read more
Characterisation of engineered nanomaterials in nano-enabled products exhibiting priority environmental exposure

Author: Lehutso, Raisibe F ; Tancu, Yolanda ; Maity, Arjun ; Thwala, Melusi Date: Mar 2021 Analytical limitations have constrained the determination of nanopollution character from real-world sources such as nano-enabled products (NEPs), thus hindering the development of environmental safety guidelines for engineered nanomaterials ... Read more
Characterisation of titanium oxide nanomaterials in sunscreens obtained by extraction and release exposure scenarios

Author: Nthwane, Yvonne B ; Tancu, Yolanda ; Maity, Arjun ; Thwala, Melusi Date: Apr 2019 The application of titanium oxide engineered nanomaterials (TiO2 (sub 2) ENMs) in products is dominant in sunscreens and can be release into water systems with relative ease during sunscreen use. The current study examined the physico-chemical ... Read more
Evidence of free radical and antioxidant activity in Spirodela exposed to metallic and metal oxide nanoparticles: potential for protein and lipid damage

Author: Thwala, Melusi ; Musee, N ; Wepener, V ; Nota, N Date: Apr 2012 The toxicity of engineered nanoparticles towards macro algae and higher aquatic plants has not been well studied. This knowledge gap challenges the development of nano risk assessment towards water ecosystems. In this study, we investigated ... Read more
Exposure assessment of metal- and metal oxides-based nanoparticles in aquatic systems using fuzzy set theory

Author: Musee, N Date: Sep 2012 There is an increasing number of nanoproducts and industrial applications of Engineered nanomaterials (ENMs), increasing also the volumes of hazard (toxicity) and exposure data. There is thus an increasing necessity to identify the most ... Read more
Fate, behaviour and toxicity of engineered nanomaterials in the environmental systems

Author: Musee, N Date: Apr 2012 Historical analysis of different technologies' evolution reveals how many of them failed to achieve the intended societal benefits. This is primarily because their associated health, safety, and environmental effects were detrimental to the ... Read more
Nano-enabled products in South Africa and the assessment of environmental exposure potential for engineered nanomaterials

Author: Moeta, Pheeha J ; Wesley-Smith, J ; Maity, Arjun ; Thwala, Melusi Date: Jun 2019 In order to address risks associated with nanotechnology, there needs to be improved understanding of potential sources of engineered nanomaterials (ENMs) into the environment. Nano-enabled products (NEPs) are amongst such sources, and the ... Read more
Simulated environmental risk estimation of engineered nanomaterials: a case of cosmetics in Johannesburg City

Author: Musee, N Date: Sep 2011 This paper attempts to quantify the potential risks posed by engineered nanomaterials (ENMs) to the aquatic and terrestrial ecosystems from cosmetic-based nanoproducts. The predicted environmental concentrations (PEC) were modelled for the ... Read more
Statistical modelling approach to derive quantitative nanowastes classification index; estimation of nanomaterials exposure

Author: Ntaka, L ; Musee, N ; Das, Sonali ; Muzenda, E Date: Aug 2013 The widespread use of engineered nanomaterials (ENMs) in consumer products and industrial applications has raised concerns because of their potential impacts in the environmental systems. These concerns are due to dramatically increasing ... Read more
Toxicity effects of Fe2O3, TiO2, ZnO, and Ag engineered nanomaterials (ENMs) on the macrophyte Spirodela species

Author: Thwala, Melusi ; Musee, N ; Wepener, V ; Oberholster, Paul J Date: 01 Sep 2010 This study is according to current literature the first to investigate the toxicity effects of ENMs on higher aquatic plants. Such information is vital for aquatic ecosystem protection information from the relatively less understood ENMs. The ... Read more

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Browsing by Subject "Engineered nanomaterials"

Browsing by Subject "Engineered nanomaterials"

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