SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2015, Vol. 23 ›› Issue (6): 924-933.DOI: 10.1016/j.cjche.2014.05.024

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Development of a novel nano-biosorbent for the removal of fluoride from water

Evangeline Christina, Pragasam Viswanathan   

  1. Renal Research Lab, Bio Medical Research Center, School of Biosciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
  • Received:2013-11-19 Revised:2014-05-24 Online:2015-07-09 Published:2015-06-28
  • Contact: Pragasam Viswanathan

Development of a novel nano-biosorbent for the removal of fluoride from water

Evangeline Christina, Pragasam Viswanathan   

  1. Renal Research Lab, Bio Medical Research Center, School of Biosciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
  • 通讯作者: Pragasam Viswanathan

Abstract: The study was designed to investigate the use of two sorbents namely (i) Fe3O4 nanoparticles immobilized in sodiumalginate matrix (FNPSA) and (ii) Fe3O4 nanoparticles and saponified orange peel residue immobilized in sodium alginate matrix (FNPSOPR) as sorbents for fluoride removal from contaminated water. The synthesized nanoparticles were analyzed and characterized by dynamic light scattering, X-ray diffraction, vibrating sample magnetometry, and scanning electron microscopy with energy dispersive X-ray spectroscopy and Fourier transform-infrared spectrometry. The sorbentmatriceswere prepared in the formof beads and surface functionalized to enable enhanced sorption of fluoride ions. Batch sorption studieswere carried out and the sorption isotherm and reaction kinetics were analyzed. Both the sorbents followed Langmuir model of isotherm and fitted well with Pseudo first order reaction. The maximum sorption capacity exhibited by FNPSA and FNPSOPR was 58.24 mg·g-1 and 80.33 mg·g-1 respectively. Five sorption-desorption cycles exhibited 100%, 97.56%, 94.53%, 83.21%, and 76.53% of regeneration of FNPSOPR. Accordingly, it is demonstrated that FNSOPR could be used as a promising sorbent for easy and efficient removal of fluoride from contaminated water with good reusability. The current work suggests a simple and effective method to remove fluoride from contaminated water.

Key words: Adsorption capacity, Fe3O4 nanoparticles, Fluoride, Functionalization, Sorption

摘要: The study was designed to investigate the use of two sorbents namely (i) Fe3O4 nanoparticles immobilized in sodiumalginate matrix (FNPSA) and (ii) Fe3O4 nanoparticles and saponified orange peel residue immobilized in sodium alginate matrix (FNPSOPR) as sorbents for fluoride removal from contaminated water. The synthesized nanoparticles were analyzed and characterized by dynamic light scattering, X-ray diffraction, vibrating sample magnetometry, and scanning electron microscopy with energy dispersive X-ray spectroscopy and Fourier transform-infrared spectrometry. The sorbentmatriceswere prepared in the formof beads and surface functionalized to enable enhanced sorption of fluoride ions. Batch sorption studieswere carried out and the sorption isotherm and reaction kinetics were analyzed. Both the sorbents followed Langmuir model of isotherm and fitted well with Pseudo first order reaction. The maximum sorption capacity exhibited by FNPSA and FNPSOPR was 58.24 mg·g-1 and 80.33 mg·g-1 respectively. Five sorption–desorption cycles exhibited 100%, 97.56%, 94.53%, 83.21%, and 76.53% of regeneration of FNPSOPR. Accordingly, it is demonstrated that FNSOPR could be used as a promising sorbent for easy and efficient removal of fluoride from contaminated water with good reusability. The current work suggests a simple and effective method to remove fluoride from contaminated water.

关键词: Adsorption capacity, Fe3O4 nanoparticles, Fluoride, Functionalization, Sorption