Nanotechnology Emerging Trends, Markets, and Concerns

Khan, Waseem S.; Asmatulu, Ramazan

doi:10.1016/b978-0-444-59438-9.00001-1

Cited by 12 publications

(9 citation statements)

References 10 publications

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“…Examples include the use of TiO 2 NPs in food, cosmetics (Weir, Westerhoff, Fabricius, Hristovski, & von Goetz, 2012), and photovoltaics (Chen & Mao, 2007), and the use of CeO 2 NPs as a fuel additives (Cassee et al, 2011) in electronic devices (Baalousha, Le Coustumer, Jones, & Lead, 2010; Nishikawa et al, 2002) and cosmetics (Grinter et al, 2016). With increasing production and applications in our daily life (Khan & Asmatulu, 2013), NPs are expected to diffuse in aquatic systems, through industrial discharges, wastewater systems and effluents (Smeraldi et al, 2017), or surface runoff from soils (Batley, Kirby, & McLaughlin, 2013; Piplai, Kumar, & Alappat, 2018). Studies have shown that NPs can pose an ecotoxicological risk in aquatic environments, and possible risks to humans via, for example, their presence in water compartments, which are used for drinking water production (Bhatt & Tripathi, 2011; Park et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Coagulation of TiO₂, CeO₂ nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Arenas

Gentile

Zimmermann

et al. 2020

Water Environment Research

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Intensive use of engineered nanoparticles (NPs) results in their release into aquatic systems and consequently into drinking water resources. Therefore, it is important to evaluate how NPs can be effectively removed through water treatment processes, such as coagulation, to control environmental and health risks associated with NP exposure. This work investigates the effect of two conventional coagulants, polyaluminum chloride (PACl) and iron chloride (FeCl3), on NPs. Three bottled mineral and Lake Geneva waters, currently used as drinking water resources, were considered to get an insight into coagulation efficiency. TiO2, CeO2 NPs, and polystyrene (PS) nanoplastics were selected, owing to their large number of applications and contrasting surface charge and aggregation behavior at environmental pH. Our findings indicate that PACl is more efficient compared with FeCl3 since lower dosages are required to coagulate all nanoparticles. On the other hand, nanoplastic coagulation is found less efficient compared with TiO2 and CeO2 NPs. This is an important outcome indicating that nanoplastic stability and dispersion state will be more pronounced and therefore more challenging to eliminate. Results highlight the key role of NP and PS nanoplastic surface charge, as well as water properties, coagulant type, and dosage on nanoparticle elimination from aquatic systems. Practitioner Points pH, water hardness, and NOM are playing roles in final coagulant dosage concentration. PACl is more efficient than FeCl3 in most conditions. Positively charged nanoplastics are more difficult to eliminate by coagulation. NP surface properties in bottled mineral and surface waters are controlled by pH, divalent cations, and NOM. NP surface charge and coagulation efficiency depend on water properties.

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Section: Introductionmentioning

confidence: 99%

Coagulation of TiO₂, CeO₂ nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Arenas

Gentile

Zimmermann

et al. 2020

Water Environment Research

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“…Examples include the use of TiO 2 NPs in food, cosmetics [3], and photovoltaics [4], and the use of CeO 2 NPs as a fuel additives [5], in electronic devices, and cosmetics [6]. With increasing production and applications in our daily life [7], NPs are expected to diffuse in aquatic systems, through industrial discharges, wastewater treatment effluents, or surface runoff from soils [8]. Studies have shown that NPs can pose an ecotoxicological risk in aquatic environments, and possible risks to humans via, for example, their presence in water compartments, which are used for drinking water production [9,10].…”

Section: Introductionmentioning

confidence: 99%

Behavior of TiO2 and CeO2 Nanoparticles and Polystyrene Nanoplastics in Bottled Mineral, Drinking and Lake Geneva Waters. Impact of Water Hardness and Natural Organic Matter on Nanoparticle Surface Properties and Aggregation

Ramírez

Gentile²,

Zimmermann³

et al. 2019

Water

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Intensive use of engineered nanoparticles (NPs) in daily products ineluctably results in their release into aquatic systems and consequently into drinking water resources. Therefore, understanding NPs behavior in various waters from naturel to mineral waters is crucial for risk assessment evaluation and the efficient removal of NPs during the drinking water treatment process. In this study, the impact of relevant physicochemical parameters, such as pH, water hardness, and presence of natural organic matter (NOM) on the surface charge properties and aggregation abilities of both NPs and nanoplastic particles is investigated. TiO2, CeO2, and Polystyrene (PS) nanoplastics are selected, owing to their large number applications and contrasting characteristics at environmental pH. Experiments are performed in different water samples, including, ultrapure water, three bottled mineral waters, Lake Geneva, and drinking water produced from Lake Geneva. Our findings demonstrate that both water hardness and negatively charged natural organic matter concentrations, which were measured via dissolved organic carbon determination, are playing important roles. At environmental pH, when negatively charged nanoparticles are considered, specific cation adsorption is promoting aggregation so long as NOM concentration is limited. On the other hand, NOM adsorption is expected to be a key process in NPs destabilization when positively charged PS nanoplastics are considered.

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“…Solution where 300 nm Al 2 O 3 particles were used resulted in low amount of particles present in the nickel coatings compared to solutions where a size of 50 nm was used [38]. Nanoparticles possess excellent and exotic properties that are not contained in the bulk material even when they are of the same kind [15]. Incorporation of metal oxide, carbides and nitride nanoparticles yielded high microhardness, better corrosion resistance, good thermal stability and wear resistance [39,36,40].…”

Section: Particle Characteristics and Concentration In The Bathmentioning

confidence: 99%

“…Inclusion of nano-sized materials into a Zn matrix to produce nanocomposite coatings offers novel properties that are not exhibited by traditional coatings. The exotic properties such as excellent corrosion resistance, high temperature oxidation resistance, excellent self-lubricating and tribological properties possessed by these materials enable their extensive use for several applications [15]. The incorporation of the second phase particles into the matrix enable excellent performance of the resultant deposits in demanding environments such as coastal and marine.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Properties of Zinc Composite Coatings for Mitigation of Corrosion in Coastal and Marine Zone

Popoola¹,

Malatji²,

Fayomi³

2016

Applied Studies of Coastal and Marine Environments

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Deterioration of metals and alloys during service due to corrosion and wear phenomena shortens materials life span and structural integrity particularly in aggressive environments such as coastal and marine. This degradation also limits the use of these materials in most industrial applications. Therefore, the improvement of the quality of these materials in order to combat these challenges in industry remains critical. Surface modification techniques are employed to enhance materials properties to enable better performance and to extend their applications in demanding environments. Electrodeposition has been a useful method developed to improve the corrosion and mechanical properties of materials. In the present contribution, ample knowledge about electrodeposition of Zn composite/nanocomposite coatings and their characteristics are reviewed to address coastal and marine degradation of metals and alloys.

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Nanotechnology Emerging Trends, Markets, and Concerns

Cited by 12 publications

References 10 publications

Coagulation of TiO₂, CeO₂ nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Coagulation of TiO₂, CeO₂ nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Behavior of TiO2 and CeO2 Nanoparticles and Polystyrene Nanoplastics in Bottled Mineral, Drinking and Lake Geneva Waters. Impact of Water Hardness and Natural Organic Matter on Nanoparticle Surface Properties and Aggregation

Fabrication and Properties of Zinc Composite Coatings for Mitigation of Corrosion in Coastal and Marine Zone

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Nanotechnology Emerging Trends, Markets, and Concerns

Cited by 12 publications

References 10 publications

Coagulation of TiO2, CeO2 nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Coagulation of TiO2, CeO2 nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Behavior of TiO2 and CeO2 Nanoparticles and Polystyrene Nanoplastics in Bottled Mineral, Drinking and Lake Geneva Waters. Impact of Water Hardness and Natural Organic Matter on Nanoparticle Surface Properties and Aggregation

Fabrication and Properties of Zinc Composite Coatings for Mitigation of Corrosion in Coastal and Marine Zone

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Coagulation of TiO₂, CeO₂ nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage

Coagulation of TiO₂, CeO₂ nanoparticles, and polystyrene nanoplastics in bottled mineral and surface waters. Effect of water properties, coagulant type, and dosage