Research on the Adsorption Behavior of HeavyMetal Ions by Porous Material Prepared with Silicate Tailings
AbstractTailings generated from mineral processing have attracted worldwide concerns due to creating serious environmental pollution. In this work, porous adsorbents were prepared as a porous block by using silicate tailings, which can adsorb heavy metal ions from the solution and are easy to separate. The synthesized silicate porous material (SPM) was characterized by X-ray diffraction (XRD), Brunner–Emmet–Teller (BET), and scanning electron microscope (SEM). The material presented a surface area of 3.40 m2⸱g−1, a porosity of 54%, and the compressive strength of 0.6 MPa. The maximum adsorption capacities of Pb2+, Cd2+, and Cu2+ by SPM were 44.83 mg·g−1, 35.36 mg·g−1, and 32.26 mg·g−1, respectively. The experimental data were fitted well by the Freundlich and Langmuir adsorption models. The kinetics of the adsorption process were fitted well by the pseudo-first order kinetic equation. These results show that the porous materials prepared with silicate tailings could act as an effective and low-cost adsorbent for the removal of heavy metal ions from wastewater. This study may provide a new thought on the high-value utilization of tailing for alleviating environmental pressure.
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Ouyang, D.; Zhuo, Y.; Hu, L.; Zeng, Q.; Hu, Y.; He, Z. Research on the Adsorption Behavior of HeavyMetal Ions by Porous Material Prepared with Silicate Tailings. Minerals 2019, 9, 291.
Ouyang D, Zhuo Y, Hu L, Zeng Q, Hu Y, He Z. Research on the Adsorption Behavior of HeavyMetal Ions by Porous Material Prepared with Silicate Tailings. Minerals. 2019; 9(5):291.Chicago/Turabian Style
Ouyang, Dongxiao; Zhuo, Yuting; Hu, Liang; Zeng, Qiang; Hu, Yuehua; He, Zhiguo. 2019. "Research on the Adsorption Behavior of HeavyMetal Ions by Porous Material Prepared with Silicate Tailings." Minerals 9, no. 5: 291.
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