Removal of Cd2+ from aqueous solution by zeolite synthesized from Egyptian kaolin

Abstract

<jats:p>Zeolite Na-Y was prepared from kaolin located in Wadi-Hagul, Suez, Egypt. The synthetic zeolite prepared by the hydrothermal reaction of kaolin was characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), scanning electron microscopy (SEM) and cation exchange capacity (CEC). Cadmium ion removal was investigated using the synthetic solution of Cd2+ ions with different concentrations at room temperature (25 °C ± 0.2), initial pH of the solution and contact times. The optimum contact time for removal of Cd2+ ion was 10 min, with 0.1g of synthetic zeolite and pH 7.57. The experimental data were correlated using Langmuir, Freundlich and Harkins-Jura adsorption isotherms. The maximum adsorption capacity Qm obtained from the Langmuir isotherm was 14.006 mg/g for Cd2+ ion. Kinetic studies reveal that synthetic zeolite is more effective as adsorbent for removing cadmium ions</jats:p>

System of antioxidant protection of young cattle under cadmium load

“…Protection of the environment from man-made pollution is one of the most important tasks of our time. Harmful emissions and waste from industrial enterprises, transport, etc., into the environment today have reached a significant scale, and in large industrial centers, the per-missible sanitary standards are significantly exceeded; the problem of environmental pollution with heavy metals, the lion's share of which is cadmium, is particularly acute (Liao et al, 2011;Bahgaat et al, 2020;Bashchenko et al, 2020;Palamarchuk et al, 2022).…”