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Optimum ph for different heavy metal removal in magnetic separator

Apr 01, 2017 Results showed that better removal rate of copper and cadmium was achieved at high pH values (pH 3) with SDS feed concentration of 8 mM, while the optimal pH range was 3–10 for zinc and lead. The corresponding efficiencies for heavy metal removal decreased with the increasing feed concentration of metal ions under the pH conditions of 1–12

  • Heavy metal ions removal from industrial wastewater using
    Heavy metal ions removal from industrial wastewater using

    Mar 15, 2020 The experimental procedure used in heavy metal removal consists of a series of small bottles containing heavy metals with initial concentrations (C i, HM) ranging from 5 to 48 mg/L and different pH. The bottles were agitated in a shaking bath at specific temperature (20 1, 30 1, and 40 3 C) for 30 min until the pH was stabilized

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  • Synthesis, characterization and heavy metal removal
    Synthesis, characterization and heavy metal removal

    Feb 15, 2021 The values for optimum removal through batch-adsorption were investigated at different parameters (pH 3–7, dose: 10, 20, 30, 40 and 50 mg and contact time: 30, 60, 90, and 120 min)

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  • Response surface methodology for heavy metals removal by
    Response surface methodology for heavy metals removal by

    Apr 10, 2020 Among the different heavy metals, Hg 2+ was selected as a model. The influence and significance of effective parameters on Hg 2+ removal were investigated using CCD and RSM, and the optimum value of each parameter was determined. In addition, the efficiency of adsorbent for the removal of the other heavy metal ions (Co 2+, Cu 2+, Pb 2+ and Cd 2

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  • Influence of pH on heavy metal speciation and removal
    Influence of pH on heavy metal speciation and removal

    Apr 01, 2017 Results showed that better removal rate of copper and cadmium was achieved at high pH values (pH 3) with SDS feed concentration of 8 mM, while the optimal pH range was 3–10 for zinc and lead. The corresponding efficiencies for heavy metal removal decreased with the increasing feed concentration of metal ions under the pH conditions of 1–12

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  • Removal of heavy metal ions by superconducting magnetic
    Removal of heavy metal ions by superconducting magnetic

    Jul 01, 1999 Jul 01, 1999 Several industrial sectors such as surface treatment, petroleum, chemical, etc. generate effluents containing heavy metal ions (HMI). The main metal ions in such effluents can be zinc, copper, vanadium, etc. Purification of such effluents by magnetic separation is performed by adding a certain

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  • Technological trends in heavy metals removal from
    Technological trends in heavy metals removal from

    Aug 01, 2021 The effects of pH on the removal of Cd 2+ by ion-exchange resin Amberjet 1200H from a metal solution revealed that metal removal was optimum within the pH range 4–7 . Table 4 further lists some of the ion exchange resins with their specific heavy metal removal efficiencies and

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  • Response surface methodology for heavy metals removal
    Response surface methodology for heavy metals removal

    Apr 10, 2020 Among the different heavy metals, Hg 2+ was selected as a model. The influence and significance of effective parameters on Hg 2+ removal were investigated using CCD and RSM, and the optimum value of each parameter was determined. In addition, the efficiency of adsorbent for the removal of the other heavy metal ions (Co 2+, Cu 2+, Pb 2+ and Cd 2

    Get Price
  • New strategy to enhance heavy metal ions removal from
    New strategy to enhance heavy metal ions removal from

    May 15, 2021 May 15, 2021 Jin S, Park BC, Ham WS, Pan L, Kim YK (2017) Effect of the magnetic core size of amino-functionalized Fe 3 O 4-mesoporous SiO 2 core-shell nanoparticles on the removal of heavy metal ions. Colloids Surf A Physicochem Eng Asp 531:133–140

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  • Heavy metal removal from wastewater using various
    Heavy metal removal from wastewater using various

    Maximum adsorption capacity obtained was reported to be 108.7 mg/g at an optimum pH of 6 and the maximum removal reported was 93.76% (Wan et al. 2004). Similarly, Hydari et al. modified chitosan by coating with activated carbon and reported an adsorption capacity of 52.63 mg/g adsorption capacity at an optimum pH of 6 with 100% removal

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  • Efficient removal of copper and lead from aqueous
    Efficient removal of copper and lead from aqueous

    Efficient removal of heavy-metal ions from water is of great importance for addressing the issue of environmental pollution. In this work, a novel magnetic biochar was fabricated by loading Fe 3 O 4 on straw-oriented biochar (Fe 3 O 4 @BIO) through co-precipitation method. The preparation condi-tions were optimized, and the best Fe 3 O 4

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  • Review on nanoadsorbents: a solution for heavy metal
    Review on nanoadsorbents: a solution for heavy metal

    The optimum pH was found to be 6.0 at the temperature of 25 C with the contact time of 60–90 min . Tofighy and Mohammadi have studied the potential effect of CNTs on the removal of heavy metals such as Cu 2+, Zn 2+, Pb 2+, Co 2+ and Cd 2+. The kinetic studies of adsorption results that the above carbon nanoadsorbent removes the heavy metal

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  • Superabsorbents and Their Application for Heavy Metal Ion
    Superabsorbents and Their Application for Heavy Metal Ion

    The optimal operating pH range for the selected hydrogels indicated by the manufacturers is 5–9. Aqueous solutions of Cu(II), Zn(II), Mn(II) and Fe(III) complexes with EDDS were prepared by dissolving equimolar amounts of the metal salts Cu(NO 3 ) 2 ∙3H 2 O, Zn(NO 3 ) 2 ∙6H 2 O, Mn(NO 3 ) 2 ∙H 2 O and Fe(NO 3 ) 3 ∙9H 2 O in the EDDS

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  • Heavy Metals Removal - Boiler, Cooling and
    Heavy Metals Removal - Boiler, Cooling and

    concentration of the metal, and the pH of the water. Heavy metals are usually present in wastewaters in dilute quantities (1 - 100 mg/L) and at neutral or acidic pH values ( 7.0). Both of these factors are disadvantageous with regard to metals removal. However, when one adds caustic to water which contains dissolved

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  • Removal of Zn (II) and Cu (II) Ions from Industrial
    Removal of Zn (II) and Cu (II) Ions from Industrial

    The influence of pH on the removal of metal ions was monitored in the pH range 2-10. pH adjustments were done using aqueous NaOH or HCl. The effects of other parameters on metal ion adsorption were monitored at different parameter ranges: temperature (25-50 C), biosorbent dosage (0.2-2 g), contact time (30-125 min), and initial metal ion

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  • Effective parameters for the adsorption of chromium(III
    Effective parameters for the adsorption of chromium(III

    different pH values are shown in Fig. 2. To determine the optimal pH, test temperature was 25 C, magnet rotation speed was 300 rpm, test time was 60 min, and amount of nanoparticle was 1 g. Table 1 shows the amount of initial pH as well as final pH versus the amount of chromium removal after adsorp-tion of the pollutant onto the Fe 3O

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  • Removal of Arsenic and Copper from Water Solution
    Removal of Arsenic and Copper from Water Solution

    Keywords Magnetic iron nanoparticles Bentonite Heavy metals removal Copper Arsenic ... membrane separation, ion exchange and adsorption [4– ... of pH, three different phases were studied

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