Lead Contamination Articles

  • Removal of metal ions from aqueous effluents involving new thermosensitive polymeric sorbent

    In this work, new thermosensitive copolymers bearing phosphonated groups were synthesized and used to remove metal pollution. Sorption properties are brought by hydrolyzed (dimethoxyphosphoryl)methyl 2-methylacrylate (hMAPC1) monomer. N-n-propylacrylamide (NnPAAm) led to the thermoresponsive properties of the copolymers. Low lower ...


    By IWA Publishing

  • Large Midwestern Electronics Div. of a Transportation Co. uses a local regeneration company that mistakenly mixes water purification resin with lead treated resin

    "I just called a local water treatment dealer and a salesperson came to discuss the application. He recommended his fiberglass tanks for my operation..." discussion: A manufacturing engineer contacts a major USA water purification company with a local regeneration dealership to get a DI water supply for his cleaner. The dealership is an independently owned franchise that does not ...

  • Adsorptive removal of phosphate from aqueous solutions using lead–zinc tailings

    This study explored the feasibility of utilizing lead–zinc tailings for phosphate removal in laboratory experiments. The adsorption isotherm, kinetics and pH effect were examined in batch experiments. The Freundlich and Langmuir isotherm models were used for data fitting. The adsorption kinetics can be best described by the simple Elovich equation. The phosphate adsorption tends to ...


    By IWA Publishing

  • Lead poisoning: the epidemic hitting the US juvenile justice system

    Not all behavioural issues that lead to juvenile delinquency are hereditary. In fact, there are behavioural issues that can be prevented, such as lead poisoning, that affect the likelihood of juvenile delinquency. This article focuses on the relationship between elevated juvenile lead exposures leading to lead poisoning, specifically its effects on a child's body, and juvenile delinquency. The ...


    By Inderscience Publishers

  • U.S. Federal Agencies benefit from accredited laboratories

    Accreditation is the independent evaluation of conformity assessment bodies against recognized standards to carry out specific activities to ensure their impartiality and competence. Through the application of national and international standards, government, procurers and consumers can have confidence in calibration and test results, and inspection reports provided. The International Laboratory ...


    By ASTM International

  • Empowering environmental entrepreneurs in emerging economies

    This is the fifth installment of a five-part blog series on scaling environmental entrepreneurship in emerging markets. In this series, experts in the field provide insights on how business accelerators, technical assistance providers, investors, and the philanthropic community can work with developing market ...

  • 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

  • Laboratory study on the impact of pH and salinity on the fluorescence signal of Natural Organic Matter (NOM) relevant to groundwaters from a Canadian Shield sampling site

    Fluorescence spectroscopy with the spectral resolution routine PARAFAC is a leading tool to analyze Natural Organic Matter (NOM) in waters. This routine resolves spectra into humic-, fulvic- and protein-like components, which helps interpret the NOM dynamics in environmental systems. This work is one of the first systematic studies dealing with the impact of chemical perturbations on the ...


    By IWA Publishing

  • The history of leaded gasoline

    Forensic investigations are often a combination of both scientific techniques and historical background studies. One example that is often used is the background to leaded gasoline. Gasoline service stations can be found on many street corners and, in fact, there were many more service stations in the United States in the 1960s than there are today. This means that potential sources of ...


    By Triassic Technology, Inc.

  • A forensic study at an abandoned service station along the New Jersey shore: How the mixed leads can help

    In the late 1990s, a real estate developer purchased an abandoned service station at a sheriff’s sale. The site was located on the barrier island near Atlantic City, New Jersey. The service station had been owned previously by an independent operator. That owner purchased the property from a major oil company in 1983. Our client, the real estate developer, never operated the service ...


    By Triassic Technology, Inc.

  • SnowPure Tip: Effective CO2 Removal

    CO2 is difficult for both RO and EDI to remove since it has no charge or is weakly ionized. It is important to remove CO2 in the electrodeionization pretreatment because CO2 lowers EDI product water quality, competes with silica for removal, and may lead to scaling ...


    By SnowPure Water Technologies

  • Rutherford Appleton Laboratories

    The new Research Complex at Harwell Oxford is a multidisciplinary laboratory providing world leading facilities for new and cutting edge research in both life and physical sciences and the interface between them. Environmental issues were at the forefront of the building design with all energy use carefully monitored. An innovative Earth Tube has been buried along side the building to utilise ...

  • Is your trained employee competent?

    Is your trained employee competent? It happens all the time. A worker makes a misstep in his or her day-to-day duties. The mistake leads to a serious injury, compromised product quality, negative environmental impacts, or even a fatality. “But they were trained,” the supervisor responsible for the employee in question objects. Trained, indeed – but were they competent in their ...


    By Intelex Technologies Inc.

  • Comparison of Self-Primers: A customer lead field test

    I call on numerous accounts weekly. A question that often arises is “Which pump is best?” While this certainly varies from application to application, I tend to like to see performance to make that determination. My experience in college football and 15 years of professional wrestling taught me that ‘talk is cheap’ and that true winners will shine in a competition. Last ...


    By Cornell Pump Company

  • Determining pesticides in dietary supplements with QuEChERS extraction, cartridge SPE, and GCxGC-TOFMS

    Regulatory requirements are driving the development of new multiresidue pesticide methods for dietary supplements. Minimizing matrix interference is critical for data accuracy. The novel approach employed here combines QuEChERS extraction, cartridge SPE cleanup, and GCxGC-TOFMS analysis, and results in good recoveries across a range of compounds found in these complex matrices. ...


    By Restek Corporation

  • Modified crab shell particles for the removal of lead[II] ions from aqueous solutions

    The ability of crab shell particles to remove lead[II] was evaluated in a batch reactor and in a fixed–bed column. The binding of lead[II] by crab shell was found to be affected significantly by pH, with maximum sorption capacity 714 mg/g observed at pH 4. The sorption isotherm of lead[II] on crab shell particles was modelled by the application of Langmuir followed by Sips, Redlich–Peterson and ...


    By Inderscience Publishers

  • Grand Central Train Wreck - If not done properly, centralizing environmental organizations can lead to a train wreck

    I recently discussed the aftermath of two environment, health, and safety (EH&S) organizational restructurings with several senior professionals who were privy to the details. In one case, the vice president of EH&S was fired after the business units revolted. In the other case, the jury is still out and the internal politics and turf battles rage on. Both restructurings involved a ...

  • BNSF skykomish - Case Study

    Passive Pre-Treatment with ChitoVan Cartridges Followed by CESF with 1 % ChitoVan Cleanup of a former railway fuel and maintenance facility in Skykomish, WA is currently underway. Nearby environmentally sensitive waterways have increased the need for responsible management of contaminated waters. Two Chitosan-Enhanced Sand Filtration systems have been implemented by Clear Water Compliance ...

  • LEAD-BASED PAINT TESTING

    Abatement Project Management  ACC controls all factors of lead-based colour abatement tasks on our customer's part. The ACC venture manger screens the contractor’s actions to make sure conformity with OSHA rules. Once abatement is accomplished, the ACC venture administrator performs a visible examination and, if the place is going to be re-occupied with children, approval ...

  • Kijlstra’s precast CSOS lead the way

    As ever, time is money in the civil engineering industry and anything which can deliver high quality results in double-quick time is worth investigating. Hence in the specialised business of storm drainage and flood attenuation – currently a rare growth area in the industry – engineers and contractors are catching on to the considerable advantages of using pre-cast concrete ...


    By Kijlstra Precast Ltd.

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