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    Volume 46, Issue 6 (November 2018)

    Manihot esculenta Peel Powder: Effective Adsorbent for Removal of Various Textile Dyes from Aqueous Solutions

    (Received 14 March 2017; accepted 20 June 2017)

    Published Online: 2018

    CODEN: JTEVAB

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    Abstract

    This investigation is aimed to examine the efficiency of dye removal by activated carbon prepared from the peel of Manihot esculenta, which is commonly known as cassava, a waste obtained from sago industries. The effluents containing reactive, direct, acid, alkali, or sulfur dyes were treated with the carbon obtained from cassava peels, which were activated thermally as well as by using acid, alkali, and silver nitrate (AgNO3). The characterization of these carbons was done, and the effect of the parameters pH, concentration, contact time, adsorption dosage, and temperature were studied for each carbon and dye removal. The results of the study indicate that AgNO3-impregnated carbon is more effective in removing the dyes. The equilibrium time is found to be 150 min for reactive, direct, and sulfur dyes and 180 min for acid and basic dyes. The highest percentage dye removal of around 90 % is achieved with AgNO3-impregnated carbon, and the lowest is achieved with alkali-treated carbon. Next to AgNO3-impregnated carbon, acid-treated carbon demonstrates effective dye removal followed by thermally activated carbon and alkali-treated carbon. AgNO3-activated carbon was found to be most effective in removing the basic dye. The order of effectiveness for AgNO3-treated carbon is basic dye > direct dye > sulfur dye > acid dye > reactive dye. The characterization results of AgNO3-activated carbon corroborate its effectiveness in dye removal by indicating greater surface area and higher porosity.

    Author Information:

    Parvathi, C.
    Department of Chemistry, Kumaraguru College of Technology, Coimbatore,

    Shoba, U. S.
    Department of Chemistry, Kumaraguru College of Technology, Coimbatore,

    Prakash, C.
    Department of Fashion Technology, Sona College of Technology, Salem,

    Sivamani, S.
    Department of Biotechnology, Kumaraguru College of Technology, Coimbatore,


    Stock #: JTE20170160

    ISSN:0090-3973

    DOI: 10.1520/JTE20170160

    Author
    Title Manihot esculenta Peel Powder: Effective Adsorbent for Removal of Various Textile Dyes from Aqueous Solutions
    Symposium ,
    Committee D34