Search for dissertations about: "chromium VI"

Showing result 1 - 5 of 23 swedish dissertations containing the words chromium VI.

  2. 1. Functionalized nanomaterials for the removal of chromium (VI) from aqueous solutions

    Author : Terrance Burks; Mamoun Muhammed; Kastriot Spahiu; KTH; []
    Keywords : adsorption; chromium VI ; extractant; nanofiber; superparamagnetic iron oxide nanoparticle SPION ;

    Abstract : .... READ MORE

  4. 2. Application of Nanomaterials for the Removal of Hexavalent Chromium and their Biological Implications

    Author : Terrance Burks; Yohannes Kiros; Arunachalanadar Madakannan; KTH; []
    Keywords : Nanomaterials; Chromium; Biology; Chemical Engineering; Kemiteknik;

    Abstract : The International Agency for Research on Cancer (IARC) stated that chromium in the form of Cr(VI) has been deemed to be a class-A human carcinogen. It has been a major contaminant associated with wastewater. READ MORE

  5. 3. Oxygen formation in the chlorate process and preparation and deactivation of ozone selective anodes

    Author : Staffan Sandin; Ann M. Cornell; Paul Christensen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATO; EOP; ozone; electrode preparation; elec- trode deactivation; hypochlorite; chlorate; oxygen; chromium VI ; sodium dichromate; electrocatalysis; catalysis; Chemical Engineering; Kemiteknik;

    Abstract : This thesis presents experimental studies concerning two differ-ent electrolytic processes. One part deals with the electrochemicalformation of ozone and focuses on the preparation and deactiva-tion of a highly ozone-selective metal oxide anode (NATO - nickeland antimony doped tin oxide). READ MORE

  6. 4. Efficiency and Selectivity in the Chlorate Process

    Author : Aleksandra Lindberg; Ann Cornell; Susanne Holmin; Eva Blomberg; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrolysis; chlorate process; anodes; cathodes; selectivity; chromate; chromium VI ; DSA; HER; OER; ClER; oxygen; chlorate; hypochlorite; electrocatalysis; catalysis; Chemical Engineering; Kemiteknik;

    Abstract : This licentiate thesis presents experimental studies concerning two parts of the electrochemical cell in the chlorate process: a cathode and an anode.Newly synthesized MnOx electrodes were investigated for the cathodic reaction, hydrogen evolution reaction (HER) in the chlorate process. READ MORE

  7. 5. Liquid Membrane Techniques for Trace Metal Analysis and Speciation in Environmental and Biological Matrices

    Author : Kuria Ndung'u; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Pb and Organotin species; MMLLE; SLM; GC MS; PSA; GFAS; FAAS; ICP-MS; Speciation; DEHPA; Aliquat-336; trace metals; Cr III ; Cr VI ; Analytisk kemi;

    Abstract : In this thesis, liquid-membrane-based methods for the analysis of trace metal species in samples of environmental and biological origin were developed. By incorporating extracting reagents in the membrane liquid, trace metal ions were selectively separated from humic-rich natural waters and urine samples, prior to their determination using various instrumental techniques. READ MORE