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  • Keyword = nano.
  (Sorted by Fiscal Year)
Records 1 to 25 of 466

2021
Activation of inorganic peroxides with magnetic graphene for the removal of antibiotics from wastewater
(JOURNAL) [Published : Apr 01, 2021]
Magnetic graphene catalysts were prepared for the removal of antibiotics (sulfamethoxazole, norfloxacin, tetracycline and flumequine) in wastewater. Different proportions of magnetite-graphene from 1:0 to 0:1 were considered to study the catalytic activation of inorganic peroxide...
Modeling the environmental fate and transport of nanocopper in surface waters
(PRESENTATION) [Presented : Apr 07, 2021]
The use and production of engineered nanomaterials have grown exponentially over the past few decades due to their unique properties and versatility.  As a result of widespread industrial applications, nanomaterials have evolved into their own unique class of emerging c...
Release and transformation of nanoparticle additives from surface coatings on pristine & weathered pressure treated lumber
(JOURNAL) [Published : Oct 01, 2020]
As the market for “nano-enabled” products (NEPs) continues to expand in commercial and industrial applications, there is a critical need to understand conditions that promote release of nanomaterials and their degradation products from NEPs. Moreover, these studies must aim to qu...
Brief Overview of Microplastic Research at the USEPA
(PRESENTATION) [Presented : Mar 25, 2021]
This 20 minute presentation covers research under SSWR 1.4 Microplastics research. It describes method development for small micro- and nano- sized microplastics, past, present and future RARE projects associated with microplastics and ORD innovation projects associated with micr...
Presentation to San Francisco Estuary Institute ( Informal 10 min presentation) on microplastic activities at the US EPA
(PRESENTATION) [Presented : Mar 09, 2021]
This brief 10 minute presentation covers research under SSWR 1.4 Microplastics research. It describes method development for small micro- and nano- sized microplastics, past, present and future RARE projects associated with microplastics and ORD innovation projects associated wit...
Carbon-based Sustainable Nanomaterials for Water Treatment: State-of-art and Future Perspectives
(JOURNAL) [Published : Jan 04, 2021]
The supply of safe drinking and clean water is becoming increasingly challenging proposition throughout the world. The deployment of environmentally sustainable nanomaterials with unique advantages namely high efficiency and selectivity, earth-abundance, recyclability, low-cost o...
Isotope ratio mass spectrometry and spectroscopic techniques for microplastics characterization
(JOURNAL) [Published : Mar 01, 2021]
Micro- and nano-scale plastic particles in the environment result from their direct release and degradation of larger plastic debris. Relative to macro-sized plastics, these small particles are of special concern due to their potential impact on marine, freshwater, and terrestria...
Fragmentation of polymer nanocomposites: modulation by dry and wet weathering, fractionation, and nanomaterial filler
(JOURNAL) [Published : May 08, 2020]
In recent years, an increasing number of polymeric composites incorporating engineered nanomaterials (ENMs) have reached the market. Such nano-enabled products (NEPs) present enhanced performance through improved mechanical, thermal, UV protection, electrical, and gas barrier pro...
Nanopesticides Have the Ability to Help Achieving Sustainable Agriculture - SNO Conf
(PRESENTATION) [Presented : Nov 13, 2020]
Achieving sustainable agricultural productivity while securing food safety to nourishing a rapidly growing world population is one of the direst challenges of this century. Addressing this challenge requires technologically-sound and evidence-driven technologies to sustainably up...
Micro- and Nanoplastics in Marine Sediment: Detecting and Assessing Impacts on Benthic Communities
(PRESENTATION) [Presented : Dec 09, 2020]
Plastic particles are now found ubiquitously in the environment, and as the abundance of plastic increases in marine systems, the magnitude of adverse biological and ecological effects of plastics of various size classes (macro-, micro-, nano-) need to be evaluated for potential ...
Effect of pH, Dissolved Inorganic Carbon and Phosphates on the Nature of Lead Particles and Associated Solubility in Water
(PRESENTATION) [Presented : Dec 10, 2020]
The use of phosphates in the drinking water industry is well known. Orthophosphate is used to reduce lead levels at the consumer’s tap by forming relatively insoluble divalent lead orthophosphate compounds on the surface of the lead source (e.g., lead service line, brass fixture...
Lead Particles Size Fractionation and Identification in Newark, New Jersey's Drinking Water
(JOURNAL) [Published : Nov 03, 2020]
Following substantial pH reduction in their drinking water over a span of more than 20 years, the city of Newark, New Jersey has struggled with elevated lead (Pb) release from Pb service lines and domestic plumbing in the zone fed by the Pequonnock water treatment plant. In respo...
Review of Laboratory Scale Models of Karst Aquifers: Approaches, Similitude, and Requirements
(JOURNAL) [Published : Oct 08, 2020]
This review focuses on the simulation of groundwater flow and solute transport through karst/fractured rock aquifers through the use of laboratory scale models. It consists of a collection of different size and types of laboratory scale models. The previously developed laboratory...
Using a Metabarcoding Approach to Evaluate the Impacts of Nanoplastics on Benthic Meiofauna and Eukaryotic Microbial Communities
(PRESENTATION) [Presented : Nov 19, 2020]
As the abundance of plastic increases in marine systems, the adverse biological and ecological effects of plastics of various size classes (macro, micro, nano) need to be evaluated to address potential risks. Nanoplastic particles (NPs) are of growing concern and enter marine sys...
Microbial biosensors for recreational and source waters
(JOURNAL) [Published : Oct 01, 2020]
Biosensors are finding new places in science, and the growth of this technology will lead to dramatic improvements in the ability to detect microorganisms in recreational and source waters for the protection of public health. Much of the improvement in biosensors has followed de...
Green-synthesized nanocatalysts and nanomaterials for water treatment: current challenges and future perspectives
(JOURNAL) [Published : Jan 05, 2021]
The supply of safe drinking and clean water is becoming increasingly challenging proposition throughout the world. The deployment of environmentally sustainable nanomaterials with unique advantages namely high efficiency and selectivity, earth-abundance, recyclability, low-cost o...
Transformation and release of nanoparticle additives & byproducts from commercially available surface coatings on pressure treated lumber via dermal contact
(JOURNAL) [Published : Dec 01, 2019]
Production and marketing of “nano-enabled” products for consumer purchase has continued to expand. However, many questions remain about the potential release and transformation of these nanoparticle (NP) additives from products throughout their lifecycle. In this work, two surfac...
Sources, transport, measurement, and impact of nano and microplastics in urban watersheds
(JOURNAL) [Published : Apr 08, 2020]
The growing and pervasive presence of plastic pollution has attracted considerable interest in recent years, especially small (< 5 mm) plastic particles known as ‘microplastics’ (MPs). Their widespread presence may pose a threat to marine organisms globally. Most of the nano and ...
Detection, and toxicity of nanomaterials and fragments released from consumer products.
(PRESENTATION) [Presented : Aug 20, 2020]
Nanomaterials are applied in many consumer products: paints, coatings, composites, and food packing materials. In this study, epoxy and polypropylene filled with different nano additives were aged in an accelerated weathering chamber that simulates cycles of solar irradiation and...
2020
Characterizing the Uptake, Accumulation and Toxicity of Silver Sulfide Nanoparticles in Plants
(JOURNAL) [Published : Dec 16, 2016]
Silver nanoparticles (Ag-NPs) are used in a wide range of everyday products, leading to increasing concerns regarding their accumulation in soils and subsequent impact on plants. Using single particle inductively coupled plasma mass spectrometry (spICP-MS) and synchrotron-based t...
Characterization of colloid-size copper-based pesticide and its potential ecological implications.
(JOURNAL) [Published : Oct 01, 2019]
The intensive use of Cu-based pesticides in agriculture could have an unintended impact on the ecosystems and human health via different exposure pathways. This paper presents the results of experiments involving colloidal stability, aggregation, and dissolution of Cu2O commercia...
Polypropylene–MWCNT composite degradation, and release, detection and toxicity of MWCNTs during accelerated environmental aging
(JOURNAL) [Published : Jun 01, 2019]
Nanomaterials (NM) are incorporated into polymers to enhance their properties. However, there are a limited number of studies on the aging of these nanocomposites and the resulting potential release of NM. To characterize NM at critical points in their life cycles, polypropylene ...
MgO modified biochar produced through ball milling: Adual-functional adsorbent for removal of different contaminants
(JOURNAL) [Published : Nov 11, 2019]
A facile ball-milling method was developed to synthesize MgO/biochar nanocomposites as a dual-functional adsorbent. The physicochemical properties of the synthesized nanocomposites indicated that the composites achieved nano-scaled morphologies and mesoporous structure with MgO n...
Potential utility of graphene-based nano spinel ferrites as adsorbent and photocatalyst for removing organic/inorganic contaminants from aqueous solutions: A mini review
(JOURNAL) [Published : Apr 01, 2019]
Toxic substances such as heavy metals or persistent organic pollutants raise global environmental concerns. Thus, diverse water decontamination approaches using nano-adsorbents and/or photocatalysts based on nanotechnology are being developed. Especially, many studies have examin...
Effects of titanium dioxide nanoparticles derived from consumer products on the marine diatom Thalassiosira pseudonana
(JOURNAL) [Published : Oct 01, 2016]
Increased manufacture of TiO2 nano-products has caused concern about the potential toxicity of these products to the environment and in public health. Identification and confirmation of the presence of TiO2 nanoparticles derived from consumer products as opposed to industrial TiO...