Essays about: "column adsorption"

Showing result 21 - 25 of 30 essays containing the words column adsorption.

  1. 21. Removal efficiency of perfluoroalkyl substances (PFASs) in drinking water : evaluation of granular activated carbon (GAC) and anion exchange (AE) using column tests, and the effect of dissolved organic carbon

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Anna Östlund; [2015]
    Keywords : PFASs; perfluoroalkyl substances; removal efficiency; granular activated carbon; GAC; anion exchange; AE; dissolved organic carbon; DOC;

    Abstract : Poly- and perfluoroalkyl substances (PFASs) are a group of environmental contaminants that have gained increasing attention due to their potential to bioaccumulate, environmental persistence and potential toxicity. PFASs have been found in surface water, sediment, air, soil, sludge and ice caps globally, as well as in wildlife and humans. READ MORE

  3. 22. Treatment of arsenic-enriched drinking water in Burkina Faso using column adsorption

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Johanna Frid; Amanda Haglind; [2014]
    Keywords : ;

    Abstract : In the northern part of Burkina Faso, in the Yatenga province, the water in several drinking wells contains arsenic. The arsenic originates from the bedrock and thus affects all those that depend on the deeply drilled tube wells for their daily water needs. Since arsenic is harmful to consume it is important to find a practical way of removing it. READ MORE

  4. 23. Removal of Arsenic in Ground Water from Northern Burkina Faso through Adsorption with Granular Ferric Hydroxide : A SIDA Minor Field Study at the Department of Chemistry, University of Ouagadougou

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Hannes Öckerman; Emma Lundin; [2013]
    Keywords : Burkina Faso; arsenic; Granular Ferric Hydroxide; adsorption; column test; drinking water; ground water; self-regeneration;

    Abstract : The need of making arsenic contaminated ground water potable is urgent in parts of Burkina Faso. An implementation of a treatment design using Granular Ferric Hydroxide (GFH) is under development. Water from a tube-well in Lilgomdé, Yatenga province, Burkina Faso, has been treated with the adsorbent GFH through column experiments. READ MORE

  5. 24. Association of hydrophobic organic contaminants to size fraction of natural humic substances : using ultrafiltration and high-performance liquid chromatography

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Kristina Tattersdill; [2011]
    Keywords : humic substance; high-performance size exclusion chromatography; ultrafiltration; pesticide; size fraction;

    Abstract : Ultrafiltration and high-performance size exclusion chromatography (HPSEC) were used to determine interactions between different size-fractions of natural humic substance and carbofuran, lindane, chlorpyrifos and PCB-105. Ultrafiltration, using filter MWCO size of 1 kDa and 100 kDa, showed an adsorption of pesticide to filter. READ MORE

  6. 25. Methyl salicylate production by the fungus Ophiostoma pluriannulatum isolated from Pine Weevil frass

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Emil Norin; [2011]
    Keywords : Ophiostoma pluriannulatum; Methyl salicylate; SPME; volatiles; antifeedant;

    Abstract : One great issue of reforestation is the infestation of pest insects. The pine weevil (Hylobius abietis L.) is one of the economically most important pest insects in Europe and Asia. When insects feed on the trees the plants emit compounds that repel the insects. READ MORE