Lead Contamination Articles

  • Episode 6: Quick Learners: Accelerating the Adoption of a Safety Culture

    In this edition of the SpheraNOW podcast we interview Chris Israni, the senior principal consultant at ERM, a leading provider of Environmental Health & Safety consulting services, about building a strong safety culture on an accelerated schedule. It starts with finding the right people—who are passionate about safety - leading the charge. People fall into three broad categories, Chris ...


    By Sphera

  • The modelling of lead removal from water by deep eutectic solvents functionalized CNTs: artificial neural network (ANN) approach

    The main challenge in the lead removal simulation is the behaviour of non-linearity relationships between the process parameters. The conventional modelling technique usually deals with this problem by a linear method. The substitute modelling technique is an artificial neural network (ANN) system, and it is selected to reflect the non-linearity in the interaction among the variables in the ...


    By IWA Publishing

  • Overview of Using Lead Through the History

    Various sources assumed the share of guilt in the fall of the Roman Empire due to the use of the lead pipe, Devonshire colic in the 18th century, poisoning from the addition of lead acetate to wine and pediatric lead poisoning. Not only production but also the use of pottery for centuries caused poisoning among the population. When a piece of pottery covered with lead glaze is not heated enough, ...


    By Lumex Instruments Group

  • Assessment of TiO2 photoactivity on the lead removal: kinetic and mechanistic processing

    Removal of lead ions from aqueous solutions, in the presence and in absence of commercial TiO2, under UV-light was studied. The influence of catalyst mass, concentration of Pb(II) ions and of citric acid in the starting solution as well as the impact of illumination conditions on the removal rate were also investigated. The results were fitted on the pseudo-first order, pseudo-second order and ...


    By IWA Publishing

  • Array gain and reduction of self-noise

    Abstract—Because an array is composed of many sensors, each making an independent measurement of the wavefield, intelligent combination of the sensor signals should lead to an overall increase in the signal-to-noise ratio. What we are trying to achieve is enhancing the signal with an array beyond what is possible with a single sensor. The array gain measures an array’s signal-to-noise ...


    By Norsonic AS

  • Removal of lead(II) and nickel(II) ions from aqueous solution via Bermuda grass biomass

    Adsorption of lead(II) and nickel(II) ions from aqueous solutions was investigated by Bermuda grass biomass. The adsorption process was studied as a function of pH, initial metal concentration, temperature and time. The experimental data obtained were investigated via Langmuir, Freundlich and Temkin isotherms. The kinetic data were examined by pseudo-second-order and intraparticle diffusion ...


    By IWA Publishing

  • When It Comes to Screening Media, Quality Matters

    In precise industrial processes, all equipment and constituent parts must work together to drive performance and efficiency. For screening and sifting materials in the pharmaceutical, chemical, aggregate and other industries, your choice of media goes a long way toward determining the effectiveness of your machines. Even the best vibratory sifters are only ...


    By VibraScreener Inc.

  • Effective removal of lead (II) ions by dead calcareous skeletons: sorption performance and influencing factors

    Dead calcareous skeletons (CSs) as low-cost adsorbents were studied to remove lead ions (Pb (II)) in an aqueous solution. Factors influencing the efficiency of CSs were evaluated by adsorbent size, contact time, initial concentration, dosage concentration and pH. The optimum CS size for removal of Pb (II) was 710 μm at an equilibrium time of 720 min. The best dosage of CS was 10 g/L for a 99% ...


    By IWA Publishing

  • The Use of Leading Indicators to Predict Safety Performance

    To find sources of leading safety indicators, we need to look at the base of the Heinrich Safety Pyramid. Leading safety indicators are derived from safety incidents that did not result in injury. These can include everything from job safety observations and attendance at safety meetings to unsafe acts and near misses. These are different than lagging indicators, which are statistics that result ...


    By Intelex Technologies Inc.

  • Does the risk of Legionnaire’s Disease rise when there’s lead in your water?

    Ongoing monitoring shows that lead levels in Flint, Michigan’s water are dropping and getting closer to meeting federal safety standards. That’s some much-needed positive news for the community. But there’s still work to be done. Now, researchers are starting to check residential hot water heaters in Flint homes for Legionella. Legionella grows best in warm water and hot water ...


    By LuminUltra Technologies Ltd.

  • An evaluation of sampling methods and supporting techniques for tackling lead in drinking water in Alberta Province

    A demonstration project evaluated a range of sampling methods and supporting techniques for tackling lead in drinking water in Alberta Province, with the cities of Calgary and Edmonton as case studies. The sampling protocols specified by Health Canada in their 2009 guidance were confirmed to need further improvement and clarification; these sampling protocols produce results that are subject ...


    By IWA Publishing

  • Using Leading Indicators to Predict Safety Performance

    Leading indicators have been used for years to predict the future. Meteorologists use barometric pressure to predict the weather, politicians use polls to inform their campaign strategies and doctors use elevated body temperature as an indicator of patient health. Therefore, the use of leading indicators to predict future safety performance is a logical next step in successfully improving safety ...


    By Intelex Technologies Inc.

  • Together we can get the lead out

    If there is one lesson to be learned from the Flint crisis, it is this: Our communities will be safer in the long run with no lead pipes in the ground. That’s why the board of the American Water Works Association – recognizing our first core principle is the protection of public health -- voted unanimously on March 7 to forge on a path toward the removal of all lead service lines. ...

  • Reconsidering counter-hegemonic dam projects: the case of the Grand Ethiopian Renaissance Dam

    The paper questions the argument of the hydro-hegemony framework that counter-hegemonic mechanisms used by non-hegemons in transboundary rivers lead to a more equitable order of water and benefit-sharing, using the case of the Grand Ethiopian Renaissance Dam (GERD). It agrees with hydro-hegemony scholars that the GERD is a ‘game changer’ that challenges Egypt's hegemonic position, and an ...


    By IWA Publishing

  • The effect of bioturbation by lumbriculus variegatus on transport and distribution of lead in a freshwater microcosm

    The present study investigated the effect of bioturbation by the oligochaete worm Lumbriculus variegatus on the transport and environmental distribution of lead (Pb). Experiments used L. variegatus at densities of 0, 2093 and 8372 ind./m2, in freshwater microcosms with Pb‐spiked sediment. At the end of the 14 d experiment, lead levels in the water column, tissues of L. variegatus, and sediment ...


    By John Wiley & Sons, Ltd.

  • Differences in the removal mechanisms of Undaria pinnatifida and Phragmites australis as biomaterials for lead removal

    This study offers the opportunity to utilize Undaria pinnatifida and Phragmites australis to remove lead from water in permeable reactive barrier (PRB) technology. Its efficacy was tested using batch experiments and PRB column systems. From the batch experiment results, a higher adsorption capacity was observed for Undaria pinnatifida. Nevertheless, ...


    By IWA Publishing

  • Differences in the removal mechanisms of Undaria pinnatifida and Phragmites australis as biomaterials for lead removal

    This study offers the opportunity to utilize Undaria pinnatifida and Phragmites australis to remove lead from water in permeable reactive barrier (PRB) technology. Its efficacy was tested using batch experiments and PRB column systems. From the batch experiment results, a higher adsorption capacity was observed for Undaria pinnatifida. Nevertheless, ...


    By IWA Publishing

  • Leading with Safety – Turning Three Words Into Action

    What does leading with safety mean to you? How would that philosophy be evident in your behaviors? How would you explain this leadership approach to your team (both in a spoken and and unspoken way)? To effectively lead with safety, leaders ensure that every decision passes through the safety gate, or "checks and balances" if you prefer. The leader considers how each of their decisions impact ...

  • Kinetics of lead and copper removal from oil-field brine by potential sorption

    The present study investigates the kinetics of lead and copper removal from oil-field brine by potential sorption. A population balance equation, coupled with a mass balance equation, was used in the estimation of kinetic parameters. Metal removal was performed by potential sorption of lead and copper through CaCO3 precipitates induced by the reaction of Na2CO3 and ...


    By IWA Publishing

  • Analysis of Lead in Toys

    Important and always current is the analysis of lead in toys for children. Details about the effective sample comminution with FRITSCH Mills. Lead is a toxic heavy metal. Approx. 90 % of the incorporated lead is deposited in the bones and the teeth. Because lead is released very slowly, it will be accumulated over the time in the body. This is dangerous especially for children.  The European ...


    By Fritsch Milling and Sizing

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