Abstract Treatment of industrial wastewater by constructed wetland system for the removal of heavy metals consisting of clarification and Lemna minor (duckweed) system was studied under experimental conditions through design, construction and operating pilot plant. This plant was operated with a constant hydraulic retention time of 2 hr and 10 days for clarifier and duckweed tanks respectively. The potential of duckweed has been investigated to accumulate Cd, Cr, Ni and Pb present in a combined industrial wastewater. The experiments results show that the average removal efficiency of Cd, Cr, Ni and Pb were 44.93%, 32.26%, 74.48%, and 79.1 respectively. Duckweed plant is a poor accumulator for Cd. While it is a hyperaccumulator for Pb, Cr and Ni. Also, the removal percentages of these heavy metals have significant positive linear correlation with the pH reduction percentage and increases in acidic solution (pH < 7). Therefore pH highly affects the removal efficiency of these metals from wastewater. Duckweed shows promise for the removal of heavy metals from industrial wastewater which makes duckweed a good species for phytoremediation activities. Duckweed based treatment systems are a cost-effective and reliable supply of acceptable quality water for river rehabilitation and reuse for other purposes.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Removal of Some Heavy Metals from Industrial Wastewater by Lemmna Minor


    Contributors:


    Publication date :

    2018




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English



    Classification :

    BKL:    55.80 Verkehrswesen, Transportwesen: Allgemeines, Verkehrswesen, Transportwesen: Allgemeines / 74.75 Verkehrsplanung, Verkehrspolitik, Verkehrsplanung, Verkehrspolitik / 55.80 Verkehrswesen, Transportwesen: Allgemeines / 56.24 Straßenbau, Straßenbau / 56.24 Straßenbau / 74.75 Verkehrsplanung, Verkehrspolitik



    Removal of Some Heavy Metals from Industrial Wastewater by Lemmna Minor

    Al-Khafaji, Mahmoud Saleh / Al-Ani, Faris H. / Ibrahim, Alaa F. | Springer Verlag | 2017


    Rare and minor metals

    Tyler, Paul M. | TIBKAT | 1946


    WASTEWATER TREATMENT OF INDUSTRIAL ENTERPRISES BY THE NATURAL METALS

    L. F. Dolina / T. P. Reshetniak | DOAJ | 2018

    Free access

    Removal of Dissolved Heavy Metals in Highway Runoff

    Barrett, Michael / Katz, Lynn / Taylor, Scott | Transportation Research Record | 2014


    Removal of Dissolved Heavy Metals in Highway Runoff

    Barrett, Michael / Katz, Lynn | ASCE | 2013