NDLTD logo NDLTD Union Catalog and Global ETD Search

Global ETD Search

Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

Results

Showing 1 to 20 of 34 for “"Heavy metal ions"”.

  1. The Electrochemical Characterisation of Carbon-based Nanomaterials and their Application in the Detection of Heavy Metal Ions

    Garry, Lynn M.National University of Ireland Maynooth2013

    … for their potential use in the detection of metal ions in aqueous solutions. Firstly, the use of carbon-based nanomaterials commonly used in the construction of electrochemical sensors; multiwalled carbon nanotubes (MWCNTs) and graphene, were characterised using a potassium ferricyanide …

    maynooth Repository record

  2. The Development of Ionophore-Selective Based optical chemical sensors for the determination of heavy metal ions in aqueous environments

    Li, LiDublin City University2010

    … in-situ, real-time and low-cost monitoring of heavy metal ions is a tremendously and fast growing area of research. This work presents several novel sensing strategies for developing optical chemical sensors that can be used as early warning devices for heavy metal pollution in water. The …

    dcu Repository record

  3. Metal chalcogenide nanoparticle gel networks: their formation mechanism and application for novel material generation and heavy metal remediation via cation exchange reactions

    Pala, Irina Ramona2012

    <p>METAL CHALCOGENIDE NANOPARTICLE GEL NETWORKS: THEIR FROMATION MECHANISM AND APPLICATION FOR NOVEL MATERIAL GENERATION AND HEAVY METAL REMEDIATION VIA CATION EXCHANGE REACTIONS</p> <p>by</p> <p>IRINA R. PALA</p> <p>February 2012</p> <p>Advisor: Dr. Stephanie L. Brock</p> <p>Major: Chemistry</p> …

    wayne-thes Repository record

  4. Bacterial poly-gamma-Glutamic Acid (y-PGA) - a promising biosorbent of heavy metals

    Ogunleye, Adetoro2015

    … and can be used safely in a variety of applications that are increasing rapidly. This study investigated the production of HMW γ-PGA by five Bacillus species (B. licheniformis 1525, B. licheniformis NCTC 6816, B. licheniformis ATCC 9945a, B. licheniformis ATCC 9945a and B. subtilis (natto) ATCC …

    wlv Repository record

  5. The use of lipid profiles from immobilised selenastrum capricornutum in the biological surveillance of freshwaters

    McLarnon-Riches, Christian JamesUniversity of Central Lancashire2000

    … was investigated as a potential indicator of heavy metal pollution in freshwater environments. The toxicity of Cu", Zn 2 and Cd2t on algal growth was determined and the effective concentration inhibiting specific growth rate by 50 % (EC5 0) for each metal was found to be 124 pM Cu, 20 pM Zn …

    cent-lancashire Repository record

  6. DEVELOPMENT OF MICROBIAL ELECTROCHEMICAL SENSOR FOR TOXICITY SCREENING OF INFLUENT WASTEWATER

    SHEN YUJIA2013

    … factors like MES configuration, size, flow conditions, membrane, external resistance, etc. The application of the MES to different kinds of toxicants and their characteristics were studied. Toxic compounds tested included individual heavy metal ions (Cu(II), Zn(II), Pb(II), Cd(II) and Ni(II)), …

    nus Repository record

  7. DEVELOPMENT OF NOVEL MICROCAPSULES AND CELLULOSE-BASED BIOSORBENTS FOR POLLUTANTS REMOVAL FROM WATER

    DAISY SETYONO2014

    … OF THE THESIS, NOVEL ADSORBENTS IN THE FORM OF METAL OXIDES INCORPORATED MICROCAPSULES AND SAWDUST WERE PREPARED FOR THE EXTRACTION OF ARSENIC FROM WATER. THE ADSORBENTS CAN BE USED IN A WIDE PH RANGE FOR THE REMOVAL OF BOTH ARSENITE AND ARSENATE ANIONS FROM WATER. IN THE SECOND PART OF THE …

    nus Repository record

  8. The role of TNP-Nucleotides, LYS492 and CA²⁺chelators in the skeletal muscle sarcoplasmic reticulum CA²⁺atpase cycle

    Wichmann, JanineDivision of Chemical Pathology1998

    … the E₂ ↔ E₁ transition under these conditions, possibly because of the presence of glycerol in the medium. In the second part of the study, it was shown that addition of small amounts of chelators EGTA, EDTA, BAPTA, DTPA, HEDTA and NTA to a Ca²⁺ transport assay in which the free Ca²⁺ …

    cape-town Repository record

  9. Significance of pH and pCl in heavy metal ion reactions and mercury (II) adsorption by soil materials

    Hahne, Hermann Carl HeinrichVirginia Polytechnic Institute and State University1973

    … encountered in natural waters and soil solutions. The significance of hydroxy and chloride complexes of these heavy metal ions is discussed in relation to solubilities of sparingly soluble salts, Hg(II) adsorption on clays, and Hg(II) interactions with organic functional groups. Occurrence of …

    vt Repository record

  10. Application of impedance spectroscopy to the study of dithiocarbamate species on Au surfaces: Effects of aqueous Cu²⁺ and Mg²⁺ ions

    Riha, Tom

    … in H<sub>2</sub>O/CH<sub>3</sub>OH solutions. Impedance spectroscopy was used to probe for the presence of each SAM as they were individually applied to the surface of the IDE by examining differences in collected impedance data after each step of the chemical application sequence. The …

    emich Repository record

  11. Investigations on the development of a novel hybrid sensor for environmental monitoring applications.

    Bhavsar, KaushalkumarRobert Gordon University2016

    Heavy metal toxicity is a major environmental problem world-wide. Increased spreading and high concentration levels of the toxic heavy metals in water environments have posed a severe threat to human health and the ecosystem. Over the years, to improve the drinking water quality standards, safe …

    rgu Repository record

  12. Structural mechanism for multidrug efflux systems

    Su, Chih-chia2009

    … bacteria use to expel toxic compounds, including heavy metal ions, is the expression of membrane efflux transporters that recognize and actively export these toxic compounds out of bacterial cells, thereby allowing them to survive in extremely toxic conditions. Many of these transporters are …

    iastate Repository record

  13. Estudio de procesos para la solubilización y precipitación de iones metálicos contaminantes mediante bacterias azufre-oxidantes y sulfatoreductoras

    Cabrera Revuelta, Gema2005

    In recent years, the heavy metal contamination in the environment, due to the high industrial and mining activities, have produced the development of several technologies with the aim of reducing or removing heavy metals from contaminated media in a simple and economical way, among them the …

    cadiz Repository record

  14. Synthesis and Characterization of Bis-Phosphine Complexes with Transition Metals

    McDaniel, Alicia L.

    … processes, from the concentration of precious metals from ores to the separation of longlived nuclei from radioactive waste as well as the removal of heavy metals from soils and water for remediation. The vast majority of extractants rely on the use of nitrogen, oxygen, sulfur or selenium as …

    wku-diss Repository record

  15. Chemically activated carbon using peat soil for heavy metals adsorption in industrial wastewater

    Md Jamien, FahrulraziUniversiti Tun Hussein Onn Malaysia2019

    … soil activated carbon (PSAC) for the removal of heavy metal ions in industrials wastewater. Activated carbon from peat has successfully produced by chemical activation process using sulphuric acid as activating agents. The effect of heating temperature on the carbon content, the physical and …

    uthm Repository record

  16. Metal Dissolution From Silver Plated Flatware by Organic Acids

    Ziegler, Chad

    … use. Because most flatware items are made of metal and ingestion of certain metals can cause serious health effects, the safety of using heirloom items must be examined. The goal of this effort is to determine the character and amount of matter that is extracted from silver plated flatware …

    mo-state Repository record

  17. Metal complexes of oxygen-, nitrogen-, and sulphur-containing macrocyclic ligands; synthetic and structural studies

    Waikar, SmrutiUniversity of North London1992

    … was first realised. The understanding of interactions between metal and ligand has become more complex progressing from simple unidentate to the more complicated multidentate systems and in some instances, ligand designs have imposed unusual co-ordination geometrics around metal atoms. Such …

    london-metro Repository record

  18. The Removal and Recovery of Oxo-Anions from Aqueous Systems using Nano-Porous Silica Polyamine Composites

    Kailasam, Varadharajan

    … wastewater discharges containing high concentrations of toxic metals is omnipresent in the environment. Heavy metal ions from manufacturing sources can compromise the integrity of various ecological cycles as well as negatively impacting the health of humans through drinking water and the food …

    montana-tech Repository record

  19. The Removal and Recovery of Oxo-Anions from Aqueous Systems using Nano-Porous Silica Polyamine Composites

    Kailasam, Varadharajan

    … wastewater discharges containing high concentrations of toxic metals is omnipresent in the environment. Heavy metal ions from manufacturing sources can compromise the integrity of various ecological cycles as well as negatively impacting the health of humans through drinking water and the food …

    montana Repository record

  20. Luminescent decay and spectra of impurity-activated alkali halides under high pressure

    Klick, David Ira2011

    … of alkali halides doped with the transition-metal ions Cu+ and Ag+ and the heavy-metal ions In+ and Tl+ was investigated to 140 kbar. Measurement of spectra allowed the prediction of kinetic properties, and the predictions agree with lifetime data. In view of the localized nature of the …

    uiuc Repository record

Page 1 of 2