heavy metals Articles

  • Heavy Metals in Waste

    Untitled Document Summary and discussion The aim of this report has been to demonstrate the existing knowledge regardng the harmful effects of heavy metals, the ...

  • Heavy Metals in Vehicles

    Untitled Document Introduction Starting from September 1999, Ökopol has been performing a study on heavy metals in vehicles which was commissioned by DG ...

  • Heavy Metals in Vehicles II

    Untitled Document Executive Summary Directive 2000/53/EC on End-of-Life Vehicles aims at the prevention of wastes from vehicles and at the reuse, recycling ...

  • 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 ...


  • Life Among The Heavy Metals

    Authors in scientific and applied works interpret the meaning of the concept "heavy metals" in different ways. Today, they include more than 40 chemical elements with an atomic mass of more than 50 atomic units. An important role in the determination of heavy metals is played by the following conditions: their high toxicity in relatively low concentrations, and the ability to bioaccumulation. ...


    By Lumex Instruments Group

  • Heavy metal removal - Case Study

    KDF 55 and 85 Provide Non-Chemical Water Treatment Media for Lead Removal and Other Heavy Metal Removal from Water In New Jersey's mercury contaminated groundwater - KDF media have been removing mercury to levels below the MCL since 1992. Redox media, non-chemical water treatment remove up to 98% of water-soluble cations (positively-charged ions) of lead, mercury, copper, nickel, chromium, and ...


    By KDF Fluid Treatment, Inc.

  • Heavy Metal Removal in a compact design

    One of Wastech’s most popular standard products is the CWT-75. The CWT-75 is designed to treat small batches of rinse water – up to 500 gpd - with dissolved heavy metals of various concentrations and complexity. The system features a compact footprint, an ergonomical design with safety in mind, and ease of operation to deliver the same functionality of a large batch system at a ...

  • 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

  • Adsorption of heavy metals by road deposited solids

    The research study discussed in the paper investigated the adsorption/desorption behaviour of heavy metals commonly deposited on urban road surfaces, namely, Zn, Cu, Cr and Pb, for different particle size ranges of solids. The study outcomes, based on field studies and batch experiments, confirmed that road deposited solids particles contain a significantly high amount of vacant charge sites ...


    By IWA Publishing

  • 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

  • Physiological sensitivity of freshwater macroinvertebrates to heavy metals

    Macroinvertebrate species traits, such as physiological sensitivity, have successfully been introduced in trait‐based bioassessment approaches and are important predictors of species sensitivity in the field. The authors ranked macroinvertebrate species according to their physiological sensitivity to heavy metals using toxicity data from acute laboratory assays. Rankings for each of the heavy ...


    By John Wiley & Sons, Ltd.

  • Affinity–based biosensors for heavy metal detection

    In recent years, there has been a pressing need for fast and reliable methods for environmental monitoring. Among the various pollutants, the heavy metals are some of the most harmful because these substances are non–biodegradable and retained by the ecological system. Conventional analytical techniques for heavy metals imply high cost, trained personnel and the repute that they are mostly ...


    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

  • Sorption of heavy metals by modified chelating ion exchangers

    Satisfactory sorption capacity towards heavy metals of several physically modified chelating resins at low pH is reported. It was found that the linear sorption isotherms are the most appropriate for describing the sorption of Ni and Pb. The data obtained revealed that the chelating resins studied are able to remove selectively copper from a complex synthetic solution containing Fe, Mn and Pb. ...


    By Inderscience Publishers

  • Effects of heavy metal pollution on the soil microbial activity

    The effects of heavy metals on soil microbial processes were investigated over a period of six weeks. Analytical grade (Sigma) sulphate salts of copper, zinc and nickel were added individually and in combinations to soil samples and incubated in different plastic pots. Samples were taken from the pots forthnightly and the rates of microbial carbon and nitrogen mineralization, microbial biomass ...

  • Heavy Metal(s) in Every Day Electronics

    “Heavy metal” isn’t associated only with rock music. In sustainability, it refers to real metals like cadmium, mercury and lead. And we can all agree that while a little heavy metal ringing in our earphones is OK, we really don’t want to find heavy metals in our water or soil. However, they’re in the electronics we use every ...


    By Arrow Electronics

  • Immobilised microbial reactor for heavy metal pollution control

    The copper removal potential of Pseudomonas aeruginosa immobilised on different adsorbent resins has been studied. Duolite S-761 was found to be the most suitable matrix for bacterial immobilisation. Column studies were conducted using virgin as well as bacteria-immobilised resin. The experimental results reveal that resin with immobilised cells as sorbent increased the column capacity by more ...


    By Inderscience Publishers

  • Survey of Heavy Metals in the Catfish Synodontis Clarias

    Elevated levels of heavy metals in the catfish Synodontis clarias can be a good indication of pollution of an aquatic ecosystem due to anthropogenic influence. The concentrations of Zn, Cd, Pb, Mn and Ni were determined in Synodontis clarias caught along a section of Taylor Creek and its associated tributaries. Samples were collected bimonthly between July 1999 and June 2000 in five stations. The ...

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