eduzhai > Life Sciences > Biochemistry >

Removal of fluorine from drinking water by magnesium aluminum composite oxide adsorbent synthesized by FCT template

  • sky
  • (0) Download
  • 20211118
  • Save

... pages left unread,continue reading

Document pages: 12 pages

Abstract: In order to make full use of natural waste, a new mg Al mixed oxide adsorbent was synthesized by impregnation calcination with Chinese fir fluff and magnesium chloride and aluminum chloride solution as raw materials. The adsorbents were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The effects of mg Al molar ratio and calcination temperature on the properties of a new mg Al mixed oxide adsorbent were studied. The Langmuir adsorption capacity of the optimized mg Al mixed oxide adsorbent is 53 mg g. This adsorption capacity is higher than that of magnesium oxide and alumina alone. The synergistic effect of magnesium and aluminum is conducive to the improvement of adsorption performancee of the material. The fluoride adsorption capacity of the optimized Mg-Al mixed oxide adsorbent is only slightly affected by ions such as Cl−, NO3−, SO42−, Na+, and K+ and is excellent for use in recycling and real water. The hydroxyl groups on the surface of the Mg-Al mixed oxide adsorbent play a key role in the adsorption of fluorine. The as-obtained novel Mg-Al mixed oxide adsorbent is an efficient and environmentally friendly agent for fluoride removal from drinking water.

Please select stars to rate!


0 comments Sign in to leave a comment.

    Data loading, please wait...