tailings secondary Articles

  • Mineralogical constraints on the mobility of arsenic in tailings from Zimapan, Hidalgo, Mexico

    Arsenic mobility was studied in tailings from Zimapan, a mining zone of Mexico. Primary mineral phases are quartz, calcite, pyrite, pyrrhotite, sphalerite and arsenopyrite. Secondary minerals in oxidised tailings include gypsum, K-jarosite, lepidocrocite, goethite, beudantite and kaolinite. The highest levels of As (up to 3.95 ± 2.29 weight %), Zn (up to 3.26 ± 2.21 weight %) and Pb (up to 0.93 ± ...


    By Inderscience Publishers

  • UV disinfection of wastewater flocs: the effect of secondary treatment conditions

    Activated sludge flocs that are carried to the final effluent can significantly decrease the effectiveness of ultraviolet (UV) disinfection of wastewater. This effect is detected in a typical UV dose–response curve, where at higher UV doses there is a decrease in the inactivation rate (tailing). In this study, the effect of activated sludge process conditions on the UV inactivation ...


    By IWA Publishing

  • Chlorophacinone residues in mammalian prey at a black‐tailed prairie dog colony

    Black‐tailed prairie dogs (BTPDs), Cynomys ludovicianus, are an important prey for raptors; therefore, the use of the rodenticide Rozol (0.005% chlorophacinone active ingredient) to control BTPDs raises concern for secondary poisonings resulting from the consumption of contaminated prey by raptors. We observed Rozol exposure and adverse effects to mammalian prey on 11 of 12 search days of the ...


    By John Wiley & Sons, Ltd.

  • Societe des Mines de Syama - Mali, West Africa-case study

    SRS Crisafulli manufactured a stainless steel 4" Severe Duty FLUMP dredge system for Societe des Mines de Syama's gold mine in Mali, West Africa. The FLUMP dredges and pumps solids from a tailings pit back into the leaching process to reclaim gold, which otherwise would be lost. SRS Crisafulli designed a stainless steel FLUMP dredge to combat the corrosive environment. There have been enormous ...


    By SRS Crisafulli, Inc.

  • Designing With Geosynthetic Clay Liners

    In construction, preventing the penetration of liquids and gases is essential to maintaining the integrity of a structure. Often, containment is just as important, especially when dealing with chemical contaminants or other waste. When looking to stop the spread of contaminated liquids and gases, there are few tools as effective as geosynthetic clay liners (GCL). Read on to learn how to design ...


    By Agru America, Inc.

  • How can lead be so crucial, but also so toxic?

    Why is everyone talking about lead? Not long ago, like so many historic buildings in the UK, a local parish church near to where I live had the lead stolen from its roof.  Sadly, this is not so unusual and all the more distressing in this case, both because it holds special memories as the church where my wife and I were married, and also because the lead was stolen during heavy ...

  • Petroleum Refining Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • How to Pick the Right Ice Melter For Your Needs

    We get a lot of calls asking about what deicer to use.  What are the best products to melt the ice and snow on city streets, parking garages, hospital entry-ways, sidewalks, and driveways?  What about the daycare center where children crawl and they pick up deicers on their hands and then potentially taste them?   How about the ...

  • 2015 North American Water Treatment New Product Innovation Award

    Background and Company Performance Industry Challenges Tertiary and advanced wastewater treatment (WWT) is one of three stages in the cleaning of wastewater generated by the municipal and industrial sectors. Building on and improving upon the results of treatment through initial primary and secondary WWT stages alone, tertiary treatment is performed prior to waste ...


    By Frost & Sullivan

  • 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 ...

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