Essays about: "Nanofiltration membrane"

Showing result 6 - 8 of 8 essays containing the words Nanofiltration membrane.

  1. 6. Evaluation of the Removal Efficiency of Per- and Polyfluoroalkyl Substances in Drinking Water using Nanofiltration Membranes, Active Carbon and Anion Exchange

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

    Author : Klara Lindegren; [2015]
    Keywords : PFASs; perfluoroalkyl substances; removal efficiency; NF; nanofiltration; membrane; GAC; granular activated carbon; AE; anion exchange; PFAS; perfluorerade alkylsubstanser; reningseffektivitet; NF; nanofiltrering; membran; GAC; granulärt aktivt kol; AE; jonbytarmassa;

    Abstract : Per- and polyfluoroalkyl substances (PFASs) is a group of man-made, highly persistent chemicals. Due to the specific surface-active attributes of these molecules, applications are numerous and feed an economically important industry. During the last decade, PFASs have been detected globally in the environment, living organisms and tap water. READ MORE

  3. 7. Evaluation of the efficiency of treatment techniques in removing perfluoroalkyl substances from water

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Sandra Lundgren; [2014]
    Keywords : PFAS; removal efficiency; MIEX®; iron III chloride; Powdered activated carbon; nanofiltration membrane; dissolved organic carbon;

    Abstract : Perfluoroalkylated substances (PFASs) are a group of synthetic compounds that have gained growing attention due to their environmental persistence, toxicity and their potential to bioaccumulate. Even though PFASs are not occurring naturally in our environment, they are globally distributed and can be found ubiquitously in air, water, soil, wildlife as well as in humans. READ MORE

  4. 8. Recovery of chemicals in xylan extraction process

    University essay from Institutionen för fysik, kemi och biologi

    Author : Cathrine Nygren; [2009]
    Keywords : ;

    Abstract : Food packages containing products such as fruit juices, coffee, snacks and spices need to have barriers that can prevent oxygen, aroma substances and grease to diffuse through the packages in order to maintain or extend a certain quality of the product. Today those barriers consist of aluminium and ethylene-vinyl alcohol (EVOH) plastics, based on petroleum. READ MORE