nanotechnology environmental Articles

  • Stable dispersions of single-walled carbon nanotubes

    The degree of dispersion of Single-Walled Carbon Nanotubes (SWCNTs) in different solvents is an issue in all studies where applications (in microelectronics, as well as in biological in vitro and in vivo systems) are envisaged. We performed long-term dispersion studies of SWCNTs in four different solvents: phosphate buffer solution (PBS), poly(sodium 4-styrene-sulfonate) (NaPSS), Gum Arabic (GA), ...


    By Inderscience Publishers

  • Equilibrium adsorption isotherm of U(VI) at pH 4 and pH 5 onto synthetic magnetite nanoparticles

    The adsorption features of synthetic magnetite nanoparticles have been investigated for removal of uranyl ions from nitric solutions. These magnetic nanoparticles can be used to adsorb contaminants in wastewater and can subsequently be removed from the medium by a magnetic process because of their superparamagnetic behaviour. The magnetite nanoparticles were synthesised by simultaneous ...


    By Inderscience Publishers

  • Adsorption of nickel and arsenic from aqueous solution on natural sepiolite

    The adsorption capacity of a natural nanostructured clay (sepiolite) for the inorganic species: Ni2+ and As(V) has been studied using a batch method. The different parameters affecting sorption such as the mass of adsorbent, contact time, sorbate concentration or pH have been investigated and optimal experimental conditions have been determined. Langmuir and ...


    By Inderscience Publishers

  • On biologically produced nanomaterials

    Living organisms produce a wide variety of nano-sized materials or nano-structured materials to preserve their species on the planet. As Biologically Produced Nano Materials (BPNM) form according to the genetic information obtained in the process of their evolution, its shape or composition is well stabilised, controlled and regulated, and it can be easily mass-produced with environmental ...


    By Inderscience Publishers

  • ACS Nano Publishes Article on Nanomaterial Categorization for Assessing Risk Potential

    ACS Nano, published by the American Chemical Society (ACS), has posted an article entitled “Nanomaterial Categorization for Assessing Risk Potential to Facilitate Regulatory Decision-Making.” The abstract of the article, which is co-authored by Lynn L. Bergeson, ...


    By Bergeson & Campbell, P.C.

  • Nanotech and Jobs: Congress Weighs In

    The new Republication-led House of Representatives has expressed its concerns with what it refers to as the adverse impact of regulations on jobs and the economy. On February 10, 2011, this concern reached a new pitch. On this date, during a hearing on "Regulatory Impediments to Job Creation," the House Committee on Oversight and Government Reform released a preliminary staff report entitled ...


    By Acta Group

  • Chemical pollutants in water emerge

    Recent advances in contaminant identification methodologies, sampling instrumentation, and analytical chemistry have caused an explosion of knowledge about the presence of previously undetected organic micropollutants. While it doesn"t follow that the mere presence of chemical contaminants results in harm, public health experts, regulators, and others aren"t sitting idly by. Given the necessity ...


    By Bergeson & Campbell, P.C.

  • Critical Review to Address Nanoparticles and Environment

    For a cautionary example of the paradox of innovation, look no further than asbestos, says Pratim Biswas, Ph.D. Asbestos—because of its unmatched strength, durability, and heat resistance—was long favored by the construction industry in a wide range of uses, ...


  • What’s new in Nano?

    There are many nanotechnology governance activities underway at the federal, state, and international levels of which nano aficionados should be aware. Here is a quick summary of key initiatives. Federal Legislation: While not mentioning “nanotechnology,” a bill introduced on April 15, 2010, by Senator Lautenberg (D-NJ) contains provisions pertinent to ...


    By Bergeson & Campbell, P.C.

  • Risks from Renegade Nanoparticles during field deployments within NanoRem

    The aim of NanoRem is to support and develop the appropriate use of nanotechnology for contaminated soil and groundwater remediation. NanoRem focuses on facilitating practical, economic and exploitable nanotechnology for in-situ remediation. This can only be achieved in parallel with a comprehensive understanding of the environmental risk-benefit balance for the use of nanoparticles (NPs). One ...


    By NANO IRON s.r.o.

  • Structure and applications of titanate and related nanostructures

    TiO2 has wide applications in areas like photocatalysis, environmental purification, gas sensors, high effect solar cells, etc. Nano-structured TiO2 is particularly interesting due to its large surface area. TiO2 based nanotubes were first fabricated through a hydrothermal reaction between TiO2 and NaOH in ...


    By Inderscience Publishers

  • Studies towards a switch–off optical DNA sensor based on poly(p–phenylenevinylene) grafted magnetic beads

    Much effort has been devoted towards developing efficient DNA sensors for applications in medical diagnostics, food contamination, forensics, biodefence and environmental monitoring. In this study we further evaluate the selectivity of our recently developed switch–off sensor design that utilises sandwich hybridisation between a photoluminescent anionic conjugated polymer (CP) bound capture probe ...


    By Inderscience Publishers

  • Application of nanocrystalline metal oxide gas sensors for air quality monitoring

    Increasing concern regarding health effects caused by air pollution, together with the limited spatial resolution achievable with conventional monitoring stations, have driven efforts to develop inexpensive metal oxide gas sensors for air quality measurements. The sensing mechanism is dependent on physicochemical reactions between adsorbed gas molecules and oxygen species on the oxide surface, ...


    By Inderscience Publishers

  • Developments on nanomaterial governance in US gather pace

    Congress is considering legislation to amend the Toxic Substances Control Act (TSCA), the core federal chemical management law ( CW 15 April 2010 ). Under the current interpretation of the US Environmental Protection Agency (EPA), a chemical sharing the same molecular identity as a chemical listed on the TSCA inventory is considered an existing chemical (and thus no premanufacture notice is ...


    By Bergeson & Campbell, P.C.

  • Nano disclosures: too small to matter or too big to ignore?

    Determining whether the presence of nanoscale materials in chemical substances, mixtures, and articles triggers a disclosure obligation is complicated. The decision turns on a calculus that includes what law applies, what is known about the presence of nanoscale components, what knowledge standard applies, whether and how a nanoscale material is defined, and an entity’s interpretation of ...


    By Bergeson & Campbell, P.C.

  • Electropositive filtration technology in automobile manufacturing applications

    Argonide Corporation began as an organization focused on the production and sale of nanopowders. By definition, nanopowders are extremely small particles (less than 0.1 micron) of materials such as nickel, copper, iron, alumina, gold, etc. These materials are in demand by research and development groups within both the public and private sectors. To date, the company is still involved in this ...


    By Argonide Corporation

  • Synthesis and characterisation of nano silica-based coatings for protection of antique articles

    Antique articles are endangered by environmental effects such as humidity, UV and variation of temperature. Improved physical surface resistance is in an increasing demand in protection of cultural heritage. One possible way is their protection by suitable hydrophobic coatings. In this work, the experimentation of protective treatments on the soda glass, mud brick and copper, characteristic ...


    By Inderscience Publishers

  • TechConnect conference will include panel on safety and innovation as partners for success in advanced manufacturing

    The TechConnect World Innovation Conference and Expo, which will be held May 14-17, 2017, in Washington, D.C., will include a panel discussion on May 16, 2017, on “Safety and Innovation as Partners for Success in Advanced Manufacturing” as part of the Advanced ...


    By Bergeson & Campbell, P.C.

  • The EPA’s Toxic Substances Control Act: What you must know

    Does the nanoscale substance you are producing or using require approval under the U.S. Environmental ProtectionAgency’s (EPA) Toxic Substances Control Act (TSCA)? It does if it’s new. But what exactly is “new?” Nanotechnology innovators face challenges in commercializing their products-and pre-manufacture notification(PMN) requirements under the TSCA, the federal law governing chemical ...


    By Bergeson & Campbell, P.C.

  • EPA now talking nano

    EPA"s Scientific Advisory Panel (SAP) released in January the minutes of its November 2009 meeting regarding evaluation of nanosilver and other nanometal pesticide products. The report is available at www.epa.gov/scipoly/sap/meetings/2009/november/110309ameetingminutes.pdf. For prospective nanosilver Federal ...


    By Bergeson & Campbell, P.C.

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