Adsorption of phosphates using transition metals-modified bentonite clay

被引：25
|
作者：
Mdlalose, Lindani [1 ,2 ]
Balogun, Mohammed [1 ]
Setshedi, Katlego [1 ]
Chimuka, Luke [2 ]
Chetty, Avashnee [1 ]
机构：
[1] CSIR, Polymers & Composites Mat Sci & Mfg, POB 395, ZA-0001 Pretoria, South Africa
[2] Univ Witwatersrand, Sch Chem, Mol Sci Inst, P Bag 3, ZA-2050 Johannesburg, South Africa
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2019年 / 54卷 / 15期
关键词：
Modified bentonite; phosphate; ligand exchange process; adsorption mechanism; BIOLOGICAL PHOSPHORUS REMOVAL; ACID-ACTIVATED BENTONITE; AQUEOUS-SOLUTION; WATER; EQUILIBRIUM; EFFICIENT; RECOVERY; BEADS; IRON;
D O I：
10.1080/01496395.2018.1547315
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Phosphorus is a micronutrient but when it exists in abundance, it can have detrimental environmental impact. Bentonite (Bent) modified with Fe, Co and Ni salts were synthesized and evaluated for adsorption of phosphate ions from water. Results indicated that metal-modified bentonite have lower crystallinity compared to the native bentonite. Batch adsorption experiments showed maximum adsorption capacities of 20.88, 46.95, 29.07 and 6.57 mg/g for Fe-Bent, Co-Bent, Ni-Bent and Bent, respectively. The pseudo-second-order kinetic model provided a better fit for all adsorbents. The competition effect of coexisting anions were not significant for Fe and Ni modified bentonite.
引用
收藏
页码：2397 / 2408
页数：12
相关论文
共 50 条
  • [1] INVESTIGATION OF DEEP RED ADSORPTION USING BENTONITE CLAY MODIFIED WITH A SURFACTANT
    Tumsek, Fatma
    FRESENIUS ENVIRONMENTAL BULLETIN, 2019, 28 (11): : 7816 - 7822
  • [2] Transition metals-Modified SAPO-34 for Methanol Conversion to Light Olefins
    Mi, Jie
    Yuan, Fenyun
    Zhang, Jianan
    2013 INTERNATIONAL CONFERENCE ON MATERIALS FOR RENEWABLE ENERGY AND ENVIRONMENT (ICMREE), VOLS 1-3, 2013, : 721 - 724
  • [3] Equilibrium, thermodynamic, and kinetic of Cr(VI) adsorption using a modified and unmodified bentonite clay
    Guerra, D. J. L.
    Mello, I.
    Freitas, L. R.
    Resende, R.
    Silva, R. A. R.
    INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2014, 24 (04) : 525 - 535
  • [4] Equilibrium, thermodynamic, and kinetic of Cr(VI) adsorption using a modified and unmodified bentonite clay
    D.J.L. Guerra
    I. Mello
    L.R. Freitas
    R. Resende
    R.A.R. Silva
    InternationalJournalofMiningScienceandTechnology, 2014, 24 (04) : 525 - 535
  • [5] Adsorption and Surface Area of Modified Bentonite Used as Bleaching Clay
    Bastos Andrade, C. G.
    Toffoli, S. M.
    Valenzuela Diaz, F. R.
    CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS 2018, 2018, : 333 - 341
  • [6] Phenol adsorption in organo-modified basaltic clay and bentonite
    Richards, Sarah
    Bouazza, Abdelmalek
    APPLIED CLAY SCIENCE, 2007, 37 (1-2) : 133 - 142
  • [7] Defluoridation of groundwater using Fe3+-modified bentonite clay: optimization of adsorption conditions
    Gitari, W. M.
    Ngulube, T.
    Masindi, V.
    Gumbo, J. R.
    DESALINATION AND WATER TREATMENT, 2015, 53 (06) : 1578 - 1590
  • [8] Phosphate adsorption by lanthanum modified bentonite clay in fresh and brackish water
    Reitzel, Kasper
    Andersen, Frede O.
    Egemose, Sara
    Jensen, Henning S.
    WATER RESEARCH, 2013, 47 (08) : 2787 - 2796
  • [9] Effect of cosolvents on the adsorption of ethofumesate by modified Moroccan bentonite and common clay
    Azejjel, H.
    Ordax, J. M.
    Draoui, K.
    Rodriguez-Cruz, M. S.
    Sanchez-Martin, M. J.
    APPLIED CLAY SCIENCE, 2010, 49 (03) : 120 - 126
  • [10] ADSORPTION OF METHANYL YELLOW DYE ON Fe-MODIFIED BENTONITE CLAY
    Khankhasaeva, S. Ts
    Badmaeva, S., V
    IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA I KHIMICHESKAYA TEKHNOLOGIYA, 2022, 65 (05): : 23 - 29
12345