ISSN 0253-2778

CN 34-1054/N

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Fast and efficient removal of lead from low concentration solutions using silicotitanate

  • 1.

    School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China

  • 2.

    National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

  • 3.

    Environmental Radiation Surveillance Center, Environmental Protection Department of Anhui, Hefei 230071, China

  • 4.

    Institute of Nuclear Energy Safety Technology, Chinese Academy of Sciences, Hefei 230031, China

Cite this:
https://doi.org/10.3969/j.issn.0253-2778.2019.04.004
  • Received Date: 28 January 2018
  • Accepted Date: 08 May 2018
  • Rev Recd Date: 08 May 2018
  • Publish Date: 30 April 2019
    Abstract

  • Abstract

    Sodium crystalline silicotitanate (Na-CST) and niobium substituted crystalline silicotitanate (Na-Nb/CST), which were synthesized using the hydrothermal method and characterized by X-ray diffraction (XRD), BET and scanning electron microscopy (SEM), were used to separate Pb2+ from aqueous solutions. The adsorption experiments show that their maximum adsorption ability is within pH 4.00~6.50. The adsorption process reaches equilibrium within 60 min, and the maximum adsorption quantity of Na-CST and Na-Nb/CST is 70.1 and 70.7 mg·g-1, respectively. Both materials are able to remove more than 94% of Pb2+ from water when Pb2+ concentration is at 10-9kg·L-1 level. Most interestingly, the concentration of Pb2+ could be lower than 3×10-9kg·L-1 after adsorption, much lower than the standard set by of the World Health Organization for the quality of drinking water, 1×10-8kg·L-1.

    Abstract

    Sodium crystalline silicotitanate (Na-CST) and niobium substituted crystalline silicotitanate (Na-Nb/CST), which were synthesized using the hydrothermal method and characterized by X-ray diffraction (XRD), BET and scanning electron microscopy (SEM), were used to separate Pb2+ from aqueous solutions. The adsorption experiments show that their maximum adsorption ability is within pH 4.00~6.50. The adsorption process reaches equilibrium within 60 min, and the maximum adsorption quantity of Na-CST and Na-Nb/CST is 70.1 and 70.7 mg·g-1, respectively. Both materials are able to remove more than 94% of Pb2+ from water when Pb2+ concentration is at 10-9kg·L-1 level. Most interestingly, the concentration of Pb2+ could be lower than 3×10-9kg·L-1 after adsorption, much lower than the standard set by of the World Health Organization for the quality of drinking water, 1×10-8kg·L-1.
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    • References(15)
  • [1]
    LEN M, FLORES-ALAMO N, DAZ-CAMPOS A, et al. Lead and copper adsorption behaviour by lemna gibba: Kinetic and equilibrium studies[J]. Clean-Soil Air Water, 2017, 45(8): 1600357.
    [2]
    LI G, WANG B, HAN Y, et al. Adsorption of lead ion on amino-functionalized fly-ash-based SBA-15 mesoporous molecular sieves prepared via two-step hydrothermal method[J]. Microporous and Mesoporous Materials, 2017, 252: 105-115.
    [3]
    GAO T, YU J, JIANG X, et al. Performance of xanthate-modified multi-walled carbon nanotubes on adsorption of lead ions[J]. Water Air Soil Pollution, 2017, 228: 172.
    [4]
    LI Y, WANG S, WEI B, et al. Lead adsorption on carbon nanotubes[J]. Chemical Physics Letters, 2002, 357(3): 263-266.
    [5]
    LEE X J, LEE L Y,HIEW B, et al. Multistage optimizations of slow pyrolysis synthesis of biochar from palm oil sludge for adsorption of lead[J]. Bioresource Technology, 2017, 245: 944-953.
    [6]
    JAYARAMUDU T, VARAPRASAD K, KIM J, et al. Calcinated tea and cellulose composite films and its dielectric and lead adsorption properties[J].Carbohydrate Polymers, 2017, 171: 183-192.
    [7]
    BASU M, GUHA A K, RAY L. Adsorption of lead on cucumber peel[J]. Journal of Cleaner Production, 2017, 151: 603-615.
    [8]
    SARADA B, PRASAD M K, MURTHY C V R, et al. Potential use of Caulerpa fastigiata biomass for removal of lead: kinetics, isotherms, thermodynamic, and characterization studies[J]. Environmental Science and Pollution Research, 2014, 21(2): 1314-1325.
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    ANTHONY R G, DOSCH R G, PHILIP C V, et al. Use of silicotitanates for removing cesium and strontium from defense waste[J]. Industrial Engineering Chemistry Research, 1993, 33(11): 2702-2705.
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    POOJARY D M, BORTUN A I, CLEARFIELD A, et al. Structural studies on the ion-exchanged phases of a porous titanosilicate, Na2Ti2O3SiO4·2H2O[J]. Inorganic Chemistry, 1996, 35(21): 6131-6139.
    [11]
    TRIPATHI A, MEDVEDEV D G, CLEARFIELD A, et al. Selectivity for Cs and Sr in Nb-substituted titanosilicate with sitinakite topology[J]. Journal of Solid State Chemistry, 2003, 175(1): 72-83.
    [12]
    POOJARY D M, CAHILL R A, CLEARFIELD A. Synthesis, crystal structures, and ion-exchange properties of a novel porous titanosilicate[J]. Chemistry of Materials, 1994, 6(12): 2364-2368.
    [13]
    CELESTIAN A J, KUBICKI J D, PARISE J B, et al. The mechanism responsible for extraordinary Cs ion selectivity in crystalline silicotitanate[J]. Journal of the American Chemical Society, 2017, 130(35): 11689-11694.
    [14]
    SHVAREVA T Y. Design and properties of novel uranium-containing layered and framework materials[D].Auburn, Alabama, USA: Auburn University, 2006.
    [15]
    CHEN S, GUO B, SONG L, et al. Study on sorption of U(VI) onto ordered mesoporous silicas[J]. Journal of Radioanalytical and Nuclear Chemistry, 2013, 295(2): 1435-1442.)
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    [1]
    LEN M, FLORES-ALAMO N, DAZ-CAMPOS A, et al. Lead and copper adsorption behaviour by lemna gibba: Kinetic and equilibrium studies[J]. Clean-Soil Air Water, 2017, 45(8): 1600357.
    [2]
    LI G, WANG B, HAN Y, et al. Adsorption of lead ion on amino-functionalized fly-ash-based SBA-15 mesoporous molecular sieves prepared via two-step hydrothermal method[J]. Microporous and Mesoporous Materials, 2017, 252: 105-115.
    [3]
    GAO T, YU J, JIANG X, et al. Performance of xanthate-modified multi-walled carbon nanotubes on adsorption of lead ions[J]. Water Air Soil Pollution, 2017, 228: 172.
    [4]
    LI Y, WANG S, WEI B, et al. Lead adsorption on carbon nanotubes[J]. Chemical Physics Letters, 2002, 357(3): 263-266.
    [5]
    LEE X J, LEE L Y,HIEW B, et al. Multistage optimizations of slow pyrolysis synthesis of biochar from palm oil sludge for adsorption of lead[J]. Bioresource Technology, 2017, 245: 944-953.
    [6]
    JAYARAMUDU T, VARAPRASAD K, KIM J, et al. Calcinated tea and cellulose composite films and its dielectric and lead adsorption properties[J].Carbohydrate Polymers, 2017, 171: 183-192.
    [7]
    BASU M, GUHA A K, RAY L. Adsorption of lead on cucumber peel[J]. Journal of Cleaner Production, 2017, 151: 603-615.
    [8]
    SARADA B, PRASAD M K, MURTHY C V R, et al. Potential use of Caulerpa fastigiata biomass for removal of lead: kinetics, isotherms, thermodynamic, and characterization studies[J]. Environmental Science and Pollution Research, 2014, 21(2): 1314-1325.
    [9]
    ANTHONY R G, DOSCH R G, PHILIP C V, et al. Use of silicotitanates for removing cesium and strontium from defense waste[J]. Industrial Engineering Chemistry Research, 1993, 33(11): 2702-2705.
    [10]
    POOJARY D M, BORTUN A I, CLEARFIELD A, et al. Structural studies on the ion-exchanged phases of a porous titanosilicate, Na2Ti2O3SiO4·2H2O[J]. Inorganic Chemistry, 1996, 35(21): 6131-6139.
    [11]
    TRIPATHI A, MEDVEDEV D G, CLEARFIELD A, et al. Selectivity for Cs and Sr in Nb-substituted titanosilicate with sitinakite topology[J]. Journal of Solid State Chemistry, 2003, 175(1): 72-83.
    [12]
    POOJARY D M, CAHILL R A, CLEARFIELD A. Synthesis, crystal structures, and ion-exchange properties of a novel porous titanosilicate[J]. Chemistry of Materials, 1994, 6(12): 2364-2368.
    [13]
    CELESTIAN A J, KUBICKI J D, PARISE J B, et al. The mechanism responsible for extraordinary Cs ion selectivity in crystalline silicotitanate[J]. Journal of the American Chemical Society, 2017, 130(35): 11689-11694.
    [14]
    SHVAREVA T Y. Design and properties of novel uranium-containing layered and framework materials[D].Auburn, Alabama, USA: Auburn University, 2006.
    [15]
    CHEN S, GUO B, SONG L, et al. Study on sorption of U(VI) onto ordered mesoporous silicas[J]. Journal of Radioanalytical and Nuclear Chemistry, 2013, 295(2): 1435-1442.)
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