Preview

Nanotechnology in Water Purification

Good Essays
Open Document
Open Document
513 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Nanotechnology in Water Purification
NANOTECHNOLOGY IN WATER PURIFICATION
Introduction
Nanotechnology is the manipulation of matter on a near-atomic scale to produce new structures, materials, and devices. This technology has the ability to transform many industries and to be applied in many ways to areas ranging from medicine to manufacturing. Research in nanoscale technologies is growing rapidly worldwide
In the case of nanoscale materials, the uncertainties are great because the characteristics of nanoscle materials may be different from those of the larger particles with the same chemical composition.

The development of nanotechnology is very fast in the fields such as electronics,medical, biotechnology etc .The aim of presenting this paper is to understand the nanotechnology ,nanoparticles and its application in the treatment of water and wastewater also related application in the environmental engineering.

NANOTECHNOLOGY

DEFINITION:
Nanotechnology involves the manipulation of matter at nanometer-length scales to produce new materials, structures, and devices
Technology development at the atomic, molecular, or macromolecular range of approximately 1-100 nanometers to create and use structures, devices, and systems that have novel properties.There so many definitions are available in world wide which will vary different field of interest and person focused. By using the nanoscale materials pollutants from the water and wastewater is removed .
NANOSCALE MATERIALS: Instead of steel or aluminum being mined from the ground, new materials will be made from carbon atoms in the form of nanotubes and related structures. A single-walled, carbon nanotube is a strawlike structure with a one-atom-thick wall of carbon atoms. Lighter, stronger and more flexible than steel, carbon nanotubes are believed by many to be the most promising of all nanomaterials.
Nanoscale titanium dioxide, for instance, is finding uses in cosmetics, sun-block creams, and self-cleaning windows. And nanoscale

You May Also Find These Documents Helpful

  • Powerful Essays

    Currently, “nanotechnology development and production is geographically widespread, with more than sixty countries pursuing national nanotechnology research and innovation programs (Shapira and Wang, 2010), with the use and application of nanotechnology occurring globally. Regulation and oversight is primarily national, with some growth in nanotechnology information exchange, harmonization, and standards setting at supranational and international levels (Murashov and Howard, 2011), including activity by the OECD through its Working Parties on Nanotechnology (OECD 2011a) and on Manufactured Nanomaterials (OECD, 2012b). Arguably, some best practices are emerging (IRGC, 2007), but there remain significant differences by countries in the governance and regulation of nanotechnology. There are variations in the overall approaches to, and investment in, the assessment of environmental, health, safety, ethical, legal, and societal implications of…

    • 2034 Words
    • 7 Pages
    Powerful Essays
  • Good Essays

    What is Nanotechnology Manufacturing? The concept behind Nanotechnology is maneuvering molecules and/or atoms to fabricate resources and formations straightforwardly, in addition to utilizing the exclusive traits of matter at the Nano scale. The definition of technology is "the application of science and scientific knowledge for industrial or commercial objectives," then in its most simplistic form, nanotechnology is defined as "the application of science and scientific knowledge, at the Nano scale, for industrial or commercial objectives." In order to understand the size of material/matter involved at the Nano scale level, one needs to trace down the units of measurement, commencing with an ant (at the mill scale) and ending at the very bottom, at the Nano scale. The Nano scale is far…

    • 7281 Words
    • 30 Pages
    Good Essays
  • Good Essays

    Apes Notes

    • 649 Words
    • 3 Pages

    * Nanotechnology (tiny tech) uses science and engineering to create materials out of atoms and molecules at the scale of less than 100 nanometers or 100 billionths of a meter…

    • 649 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Do you believe in technology? Or do you think that all inventions of scientists are worthwhile for humanity? Of course, lots of these inventions are helpful and useful. Also, some of them have created new periods in past. They played a big role for coming modernity. However, there are some inventions that seem very effective but they have brought new problems for humanity and environment. Especially, at the beginning of an invention, people don’t realize that it will become big problem. Nowadays, people are taking notice of this kind of things. Nanotechnology is one of these inventions which are needed to be discussed from point to point. Today, there are some people who believe that nanotechnology is dangerous; however some scientists think that nanotechnology has great benefits because it helps people to invent new things for the future.…

    • 519 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    advent of cutting edge materials (such as carbon fiber, carbon fiber nano‐tubes, 3D printing, eco‐…

    • 3072 Words
    • 20 Pages
    Powerful Essays
  • Better Essays

    References: Bonsor, K. (n.d.). HowStuffWorks "Nanotechnology Challenges, Risks and Ethics". HowStuffWorks "Science". Retrieved September 17, 2013, from http://science.howstuffworks.com/nanotechnology5.htm…

    • 992 Words
    • 4 Pages
    Better Essays
  • Powerful Essays

    Nanotech 1AC

    • 13581 Words
    • 55 Pages

    At the beginning of 2002, all nanotechnology-related research became an area of strategic importance, with some funding directed to support its development. The Programa Especial de Ciencia y Tecnología 2001-2006…

    • 13581 Words
    • 55 Pages
    Powerful Essays
  • Satisfactory Essays

    nanochemical

    • 395 Words
    • 3 Pages

    The Pizoelectric effect in Pizoelectric materials have a ability to generate an electric charge. It genergates an alternating current voltage when it is subjected to a mechanical stress. One material of Pizoelectric material is quartz (mineral in earth continental…

    • 395 Words
    • 3 Pages
    Satisfactory Essays
  • Best Essays

    Nanotechnology and Medicine

    • 3563 Words
    • 15 Pages

    Nanotechnology can be defined as the science and engineering involved in the design, synthesis, characterization, and application of materials and devices whose smallest functional organization in at least one dimension is on the nanometer scale or one billionth of a meter. At these scales, consideration of individual molecules and interacting groups of molecules in relation to the bulk macroscopic properties of the material or device becomes important, since it is control over the fundamental molecular structure that allows control over the macroscopic chemical and physical properties. Applications to medicine and physiology imply materials and devices designed to interact with the body at subcellular (i.e., molecular) scales with a high degree of specificity. This can potentially translate into targeted cellular and tissue specific clinical applications designed to achieve maximal therapeutic affects…

    • 3563 Words
    • 15 Pages
    Best Essays
  • Good Essays

    Flash Foresight

    • 3678 Words
    • 15 Pages

    Dematerialization- As technology improves we are reducing the amount of material it takes to build the tools we use, subtracting atoms from them even as we improve their capacity and performance. Whatever is made can be dematerialized…

    • 3678 Words
    • 15 Pages
    Good Essays
  • Powerful Essays

    Molecular nanotechnology has been defined as the three-dimensional positional control of molecular structure to create materials and devices to molecular precision. The human body is comprised of molecules; hence the availability of molecular nanotechnology will permit dramatic progress in human medical services. Nanomedicine will employ…

    • 1789 Words
    • 8 Pages
    Powerful Essays
  • Better Essays

    CRN. (2008). Nanotechnology basics: for students and other learners. Retrieved June 08, 2009 at http://www.crnano.org/whatis.htm.…

    • 2227 Words
    • 9 Pages
    Better Essays
  • Powerful Essays

    In this study, glass spheres coated by TiO2 nanoparticles and N-Doped TiO2 nanoparticles for photocatalytic applications on the treatment of methylene blue and olive oil waste water. Synthesis of TiO2 and N-Doped TiO2 nanoparticles performed by sol-gel method. The effects of residence time, number of coating, initial concentration of waste water and initial volume of waste water have been invastegated. Increasing number of coating resulted in a increasing percentage of degradation. The effects of the depth of the solution in the reactor and the amount of waste water have been invastigated. The effect of the amount of wastewater was important but on the other hand we couldn’t observe a significant changes on the percentage of degradation caused by the depth of the solution in the reactor.…

    • 5746 Words
    • 23 Pages
    Powerful Essays
  • Good Essays

    References: [1] Jha, A. K., Prasad, K., Kulkarni, A. R., Synthesis of TiO2 nanoparticles using microorganisms. Colloids Surf., B 2009, 71, 226–229. [2] Jha, A. K., Prasad, K., Prasad, K., A green low-cost biosynthesis of Sb2O3 nanoparticles. Biochem. Eng. J. 2009, 43, 303–306. [3] Jha, A. K., Prasad, K., Kulkarni, A. R., Microbe mediated nanotransformation: Cadmium. NANO: Brief Rep. Rev. 2007, 2, 239–242. [4] Prasad, K., Jha, A. K., Kulkarni, A. R., Lactobacillus assisted synthesis of titanium nanoparticles. Nanoscale Res. Lett. 2007, 2, 248–250. [5] Prasad, K., Jha, A. K., Prasad, K., Kulkarni, A. R., Can microbes mediate nano-transformation? Ind. J. Phys. 2009, in press. [6] Prasad, K., Jha, A. K., ZnO nanoparticles: Synthesis and adsorption study. Nat. Sci. 2009, 1, 129–135. [7] Jha, A. K., Prasad, K., Prasad, K., Biosynthesis of Sb2O3 nanoparticles: A low cost green approach. Biotechnol. J. 2009, 4, 1582-1585. [8] Jha, A. K., Prasad, K., Ferroelectric BaTiO3 nanoparticles: Biosynthesis and characterization. Colloids Surf., B 2010, 75, 330–334. [9] Prasad, K., Jha, A. K., Biosynthesis of CdS nanoparticles: An improved green and rapid procedure. J. Colloids Interface Sci. 2010, 342, 68–72. [10] Vigneshwaran, N., Ashtaputre, N. M., Varadarajan, P V . ., Nachane, R. P et al., Biological synthesis of silver nanopar. ticles using the fungus Aspergillus flavus. Mater. Lett. 2007, 61, 1413–1418. [11] Shahverdi, A. R., Minaeian, S., Shahverdi, H. R., Jamalifar, H., Nohi, A.-A., Rapid synthesis of silver nanoparticles using culture supernatants of Entrobacteria: A novel biological approach. Process Biochem. 2007, 42, 919–923. [12] Nair, B., Pradeep, T., Coalescence of nanoclusters and formation of submicron crystallites assisted by Lactobacillus strains. Cryst. Growth Design 2002, 2, 293–298. [13] Gallegos, M. T., Schleif, R., Bairoch, A., Hofmann, K., Ramos, J. L., Arac/XylS family of transcriptional regulators. Microbiol. Mol. Biol. Rev. 1997, 61, 393–410. [14] Hantke, K., Iron and metal regulation in bacteria. Curr. Opin. Microbiol. 2001, 4, 172–177. [15] Berg, J. M., Tymoczko, J. L., Stryer, L., ‘Biochemistry’, 5th edn., W. H. Freeman & Co., New York (2003). [16] Keele, C. A., Neil, E., Joels, N., ‘Applied Physiology’, 13th edn. (Ed.: Wright S.), Oxford University Press, New York 1983. [17] Holmgren,A.,Thioredoxin and glutaredoxin systems. J. Biol. Chem. 1989, 264, 13963–13966. [18] Kanzok, S. M., Fechner, A., Bauer, H., Ulschmid, J. K. et al., Substitution of the thioredoxin system for glutathione reductase in Drosophila melanogaster. Science 2001, 291, 643–646. [19] Zeller, T., Klug, G., Thioredoxins in bacteria: Functions in oxidative stress response and regulation of thioredoxin genes. Naturwissenschaften 2006, 93, 259–266.…

    • 4262 Words
    • 18 Pages
    Good Essays
  • Powerful Essays

    Materials science, also commonly known as materials engineering, is an interdisciplinary field applying the properties of matter to various areas of science and engineering. This relatively new scientific field investigates the relationship between the structure of materials at atomic or molecular scales and their macroscopic properties.…

    • 1447 Words
    • 6 Pages
    Powerful Essays