heavy metals test Articles

  • New ways for Metal Recycling

    REWAVE XRF 3-way-sorting in innovative  “Free-Fall”-design Recycling of metal and aluminium knows no limits because it can be remelted as scrap indefinitely. Metals, however have to be separated from non-metallic impurities, and different metals have to be sorted in pure fractions to be used as secondary raw materials substituting primary resources. Especially when it ...

  • ANDalyze - Real Time Testing for Heavy Metals - Whitepaper

    Whitepaper on DNAzyme heavy metals testing technology. Water pollution is a worldwide problem affecting developing and developed countries alike. Heavy metal contaminants are one prevalent type of water pollutant. They are persistent in the environment once discharged and removal from source waters is necessary to ensure a clean drinking water supply. The problem of heavy metal pollution arises ...


    By ANDalyze

  • Heavy Metals Water Testing Powered by DNA

    Water pollution is a worldwide problem affecting developing and developed countries alike. Heavy metal contaminants are one prevalent type of water pollutant. They are persistent in the environment once d is charged and removal from source waters is necessary to ensure a clean drinking water supply. The problem of heavy metal pollution arises from several sources. Heavy metals such as uranium can ...


    By ANDalyze

  • Mining application - Heavy metals testing in water

    Isaac Plains is an open cut coal mine, in Northern Queensland, Australia. The Isaac Plains Project operates under an Environmental Authority (EA). They needed a field test for heavy metals compliance. The water sources included  potable water, mine affected water, natural creek flows, water releases, groundwater and the receiving environment. The site water management system is comprised of ...


    By ANDalyze

  • Heavy Metals Analysis

    Correct measurement results are a prerequisite for compliance with limit values, which are always specified as total metals. Heavy metals such as copper, nickel, zinc, etc. can be quickly and reliably determined in aqueous samples with the help of the LANGE cuvette tests. Matrix factors (e.g. interference ions, colour, turbidities, etc.) may have a negative impact on themeasurement and cause ...


  • Heavy metal & hydrocarbon contaminated sludge

    Solidification of Heavy Metal & Hydrocarbon Contaminated Sewage Sludge Client: North Lanarkshire Council Project Managers: Jacobs Challenge: The former sewage treatment works were decommissioned in the 1970’s. It is thought that during the closure process, demolition material originating from the ...


    By Soilutions Ltd

  • A new Use for DNA - Testing for Heavy Metals with DNAzyme Technology

    A completely new technology is now available that offers a new way to test water for contaminants andgreatly reduces the time, effort, costand complexity of testing water samples for contaminants such as lead ind rinking water. DNA sensor technology combined with a handheld fluorimeter platform tests water samples within two minutes, giving results at the push of abutton. Protecting public health ...


    By ANDalyze

  • Treatment and Disposal of Air Pollution Control Residue

    What is APCr? Thermal waste management using Energy Recovery Facilities (ERFs) is now a well-managed and mature technology that is subject to environmental monitoring by a range of competent international bodies. These ERFs have been established as a means of diverting waste away from landfill disposal and for valorising the material and energy content of the waste. Counter to historic ...

  • Removal of heavy metals from aqueous solution by limestone

    This study focused on the removal of Pb(II), Cd(II), Cu(II), and Zn(II) using reagent solutions by natural limestone in a batch system. The sorbent, collected from the Late Cretaceous limestone beds, Tunisia, was characterised by X–ray diffraction (XRD), chemical analysis (XRF) and infrared spectroscopy (FTIR). XRF showed that the studied limestone contained high amount of calcium carbonates. XRD ...


    By Inderscience Publishers

  • Occurrence of heavy metals and contaminants on the surface of adjacent rivers

    Water is fundamental to the survival of living beings. It registers every impact and can function as an indicator of environmental stressors. Our objective in the current study was to assess the sanitary conditions of the waters in the Açude, Maria Lucinda and Santa Rosa streams. This was done by checking pH, running quantitative analyses of heavy metals and testing for total coliforms. The ...


    By IWA Publishing

  • Application: heavy metals in industrial waste water

    Today heavy metals in waste water are seen as one of the biggest problems of pollution. The attention of local governments to decrease the concentration of heavy metals in waste water is continuously increasing. The Problem: The online measurement of Industrial Waste Water introduces two technical problems to be solved. First, the complex waste water matrix will interfere with any ...

  • HS-200 Stands the test of heavy manufacturing

    A manufacturer of aircraft component generates a free and emulsified oily wastewater, which results from their machining, milling, cutting, and other operations. Presently, they are using skimmers and dissolved air flotation to remove oil from the water. To remove their heavy metals they follow up with flocculation, precipitation and clarification. Due to the rapidly ...


    By Hydrosil International

  • Nitrate reductase activity: A solution to nitrate problems tested in free and Immobilized algal cells in presence of heavy metals

    Every organism has different potential to accumulate NO3- from the environment. Nitrate reduction processes are perhaps most significant in maintaining water quality by alteration of nitrate to nitrite. A comparative study between the nitrate reductase NR activity of green and blue green algae in presence of heavy metals is being conducted to present a situation where nitrate reductase process ...

  • Heavy Metal Compliance per RoHS Directive - Case Study

    Background Compliance with RoHS (or the Restriction of Hazardous Substances Directive) is an important issue in manufacturing today. RoHS has been constantly evolving since its original adoption in the EU as RoHS 2002/95/EC in 2003. Its full name is “Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment.” As the ...


  • Measuring heavy metal migration rates in a low-permeability soil

    Abstract Heavy metals at high concentrations are often toxic to living organisms, and their environmental toxicity depends on soil properties. It has long been thought that in clay-rich, low-permeability soils, heavy metals are bound to soil particles, and thus there are only few toxicity risks. This study questioned this perception and tested heavy metal mobility in such a soil, of the London ...


    By Springer

  • Improved sensitivity to heavy metals in the bioluminescence assay using alternative salt solutions

    Introduction The marine bacterium Vibrio fischeri is widely used for the toxicity assessment of environmental samples. The toxicity is measured in a medium containing 2% NaCl. When the bacteria are exposed to toxic compounds, the light production is inhibited. Toxicity values are obtained after 15 and 30 minutes exposure and expressed as EC50 values, the effective concentration causing 50% loss ...


    By microLAN B.V.

  • Non toxic reagents for SEIBOLD online-analyser for heavy metals

    Reagents and chemistry used with SEIBOLD COMPOSER Analysers are free from toxic compounds. Our "Green Thumb" project started in 2006 and delivered its first products in 2008. In 2011 the complete range of SEIBOLD COMPOSER Analyser for Heavy Metals has been introduced to the market. SEIBOLD's Analyser series COMPOSER is based on spectrophotometric technology. Measured concentration is a function ...

  • Removal and bioaccumulation of heavy metals from aqueous solutions using freshwater algae

    Four freshwater algae, including Cladophora glomerata, Oedogonium westii, Vaucheria debaryana and Zygnema insigne, were tested for their bioaccumulation capacity for cadmium (Cd), chromium (Cr) and lead (Pb) in a controlled environment with an average temperature of 18 °C, and light/dark duration of 12:12 h. Experiments were performed ...


    By IWA Publishing

  • Sorption of heavy metals in the biomass of alga Palmaria palmata

    Sorption of heavy metals by the sea alga Palmaria palmata was investigated in laboratory conditions. The sorption process of the analytes was carried out with constant flow of the solutions through the algae samples. The Langmuir isotherm model was used to describe equilibria. The experiments confirmed that 50 min of exposure of algae with little heavy metal contamination in contaminated ...


    By IWA Publishing

  • Heavy metal resistant anaerobic bacterial strains from brewery digester sludge

    This work focused on the study of the types of heavy–metal–resistant anaerobic bacteria from the sludge of a brewery wastewater treatment plant exposed to high concentrations of dissolved Cd (II), Cu (II) and Zn (II). Characterisations were carried out by polymerase chain reaction of the 16S rRNA gene of bacterial strain. Using special culture media, two types of strong heavy metal–resistant ...


    By Inderscience Publishers

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