NOVEL NANOHYBRID ADSORBENT, ITS SYNTHESIS AND USE FOR DEFLUORIDATION OF AQUEOUS SYSTEMS

摘要

The objective of present invention is advancement of an efficient nanomaterial to remove fluoride in order to make water potable. A new crystalline Zr-Al-Ca nanohybrid adsorbent for fluoride removal was successfully synthesized by a co-precipitation method in this study. The prepared adsorbents were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and thermo gravimetric analysis (TGA). The adsorption properties of the developed adsorbent were studied using batch adsorption method which shown the noticeable fluoride removal efficiency up to 99 % at near neutral pH as well as in lower pH range. The fluoride loaded adsorbent was efficiently regenerated by using an alkali solution and has no significant counter ion effect on fluoride adsorption efficiency. Interestingly, the developed nanomaterial has efficacy over varied concentration range which showed excellent fluoride removal efficiency.