Browsing by Author "Wahran M. Saod"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Characterization and use of activated carbon synthesized from sunflower seed shell in the removal of Pb(II), Cd(II), and Cr(III) ions from aqueous solution
    (Springer Nature, 2024-03-13) Nahla Hilal; Ibtihal A. Mawlood; Wahran M. Saod; Ahmed S. Al‑Rawi; Abdulsalam M. Aljumialy
    In this work, carbon-based nanomaterials such as active carbon which is prepared from com mon sunflower (Helianthus annuus) seed shell, and the characterization of the activated carbon NPs were studied using FTIR (Fourier transform infrared spec troscopy), XRD, SEM, EDS, and DTA techniques. Activated carbon NPs have been used in the adsorp tion of Pb(II), Cd(II), and Cr(III) ions from the aque ous phase. The results showed the highest adsorption efficiency was 99.9%, 92.45%, and 98% for Pb(II), Cd(II), and Cr(III) ions respectively at a tempera ture of 25 °C, pH = 7–9, and a time of 60 and 180 min, in addition to the accordance of the adsorption models for activated carbon with the Freundlich iso therm model at the value of R2 (0.9976, 0.9756, and 0.9907) and Langmuir isotherm model (0.966, 0.999, and 0.9873) of the Pb(II), Cd(II), and Cr(III) ions,
  • No Thumbnail Available
    Item
    Study of effective removal of nickel and cobalt from aqueous solutions by FeO@mSiO2 nanocomposite
    (Elsevier, 2024-08-15) Nahla Naji Hilal; Wahran M. Saod; Nisreen Jassam Alaallah; Ekhlas A. Abdulkareem; Mohammad I. AlBiajawi
    In many regions of the world, water pollution from potentially harmful substances like nickel (II) and cobalt (II) ions is a recurring issue. The quality of rivers and lakes’ environments, wastewater discharge, and drinking water sources are all still significantly impacted by it. Many studies are focused on developing new treatment alterna tives since, although treatment is often necessary, it is not always possible or accessible in a particular setting. Nanotechnology provides significant potential for water treatment. Although it has been demonstrated that nanomaterials may effectively remove both different type from chemical pollutants—including organic and inor ganic—from contaminated source, their removal efficacy may be diminished by their propensity to flocculate. Iron oxide loaded with mesoporous silica (FeO@mSiO2) was effectively synthesized and characterized through the use of FTIR, SEM, TGA, XRD, and UV–visible spectral analysis. Tests and evaluations were conducted to de termine FeO@mSiO2 nanocomposite ability to remove nickel (II) and cobalt (II) from solution, and the ideal re moval conditions were determined at different condition Adsorption isotherms, Freundlich and Temkin isotherms to the data. FeO@mSiO2 composite material displayed significant efficacy in the removal of Ni and Co. The best removal rates were attained at pH 7 and 180-minute contact duration.