Optimization of fluoride adsorption onto a sonochemically synthesized nano-MgO/γ-Al2O3 composite adsorbent through applying the L16 Taguchi orthogonal design

AbstractHere in this work an effort has been made to in situ dope γ-Al2O3 as substrate with MgO nanoparticles through applying wet impregnation followed by sonochemical synthesis methods. The as-synthesized alumina supported nano-magnesia particles (4–30 nm) were evaluated as a new defluoridating agent upon operating conditions such as pH, initial concentration, contact time, temperature and sorbent dose. The L16 Taguchi statistical approach was implemented to optimize these operating conditions. The adsorbents were also characterized using the Fourier transform infrared spectroscopy, high resolution scanning electron microscope, X-ray diffraction and X-ray analysis methods. Under optimum conditions of pH 6.00 ± 0.30, initial concentration of 0.05 kg/m3, dose of 0.70 kg/m3, contact time of 8400 s and temperature of 298 K, the fluoride removal efficiency was up to 97%. Results of the ANOVA revealed that the most influential factor on the removal efficiency of nanoadsorbent would be the initial concentratio...

[1]  M. Mourabet,et al.  Removal of fluoride from aqueous solution by adsorption on hydroxyapatite (HAp) using response surface methodology , 2015 .

[2]  R. Halladj,et al.  Adsorptive removal of fluoride ions from aqueous solution by using sonochemically synthesized nanomagnesia/alumina adsorbents: An experimental and modeling study , 2014 .

[3]  R. Halladj,et al.  Statistical analysis of sonochemical synthesis of SAPO-34 nanocrystals using Taguchi experimental design , 2013 .

[4]  M. Purkait,et al.  The defluoridation of water by acidic alumina , 2012 .

[5]  A. Bonilla-Petriciolet,et al.  Optimizing the removal of fluoride from water using new carbons obtained by modification of nut shell with a calcium solution from egg shell , 2012 .

[6]  B. K. Mishra,et al.  Mg-doped nano ferrihydrite—A new adsorbent for fluoride removal from aqueous solutions , 2012 .

[7]  Katsutoshi Inoue,et al.  Removal of fluoride from aqueous solution onto Zr-loaded garlic peel (Zr-GP) particles , 2011 .

[8]  H. Cui,et al.  Adsorption of fluoride from aqueous solution on magnesia-loaded fly ash cenospheres , 2011 .

[9]  Lihua Zhu,et al.  Sono-assisted preparation of magnetic magnesium-aluminum layered double hydroxides and their application for removing fluoride. , 2011, Ultrasonics sonochemistry.

[10]  A. Maity,et al.  Removal of fluoride from aqueous solution by polypyrrole/Fe3O4 magnetic nanocomposite. , 2011, Journal of hazardous materials.

[11]  Chuanping Feng,et al.  An excellent fluoride sorption behavior of ceramic adsorbent. , 2010, Journal of hazardous materials.

[12]  S. Rayalu,et al.  Magnesium incorporated bentonite clay for defluoridation of drinking water. , 2010, Journal of hazardous materials.

[13]  G. Song,et al.  Ultrasonic-assisted synthesis of hydrophobic magnesium hydroxide nanoparticles , 2010 .

[14]  T. Pradeep,et al.  High yield combustion synthesis of nanomagnesia and its application for fluoride removal. , 2010, The Science of the total environment.

[15]  S. Rayalu,et al.  Copper oxide incorporated mesoporous alumina for defluoridation of drinking water , 2010 .

[16]  A. Morsali,et al.  Syntheses and characterization of Mg(OH)(2) and MgO nanostructures by ultrasonic method. , 2010, Ultrasonics sonochemistry.

[17]  Haizeng Wang,et al.  Adsorption of fluoride from aqueous solution by magnesia-amended silicon dioxide granules , 2009 .

[18]  C. Sundaram,et al.  Defluoridation of water using magnesia/chitosan composite. , 2009, Journal of hazardous materials.

[19]  Yulin Tang,et al.  Fluoride adsorption onto activated alumina: Modeling the effects of pH and some competing ions , 2009 .

[20]  M. Sadrzadeh,et al.  Effect of preparation variables on morphology and pure water permeation flux through asymmetric cellulose acetate membranes , 2009 .

[21]  G. Moradi,et al.  Effects of Feed Composition and Space Velocity on Direct Synthesis of Dimethyl Ether from Syngas , 2008 .

[22]  I. D. Mall,et al.  Optimization of parameters for adsorption of metal ions onto rice husk ash using Taguchi's experimental design methodology , 2008 .

[23]  L. Philip,et al.  Enhanced fluoride removal from drinking water by magnesia-amended activated alumina granules , 2008 .

[24]  G. Moradi,et al.  Statistical analysis of the performance of a bi-functional catalyst under operating conditions of LPDME process , 2008 .

[25]  B. Nagappa,et al.  Mesoporous nanocrystalline magnesium oxide for environmental remediation , 2007 .

[26]  S. Meenakshi,et al.  Identification of selective ion-exchange resin for fluoride sorption. , 2007, Journal of colloid and interface science.

[27]  Kamal K. Pant,et al.  Equilibrium, kinetics and breakthrough studies for adsorption of fluoride on activated alumina , 2005 .

[28]  J. Yi,et al.  Removal of copper from aqueous solution by aminated and protonated mesoporous aluminas: kinetics and equilibrium. , 2004, Journal of colloid and interface science.

[29]  Aharon Gedanken,et al.  Using sonochemistry for the fabrication of nanomaterials. , 2004, Ultrasonics sonochemistry.

[30]  V. Pol,et al.  Sonochemical Deposition of Silver Nanoparticles on Silica Spheres , 2002 .

[31]  Thakur,et al.  Removal of Fluoride from Aqueous Solution by Using Alum Sludge. , 1998, Journal of colloid and interface science.

[32]  Kenneth S. Suslick,et al.  Ultrasound: Its Chemical, Physical, and Biological Effects , 1988 .

[33]  P. Venkateswarlu,et al.  Investigations on the removal of fluoride from water: rapid removal of fluoride with magnesium oxide. , 1953, The Indian journal of medical research.

[34]  W. C. Walker,et al.  Active Magnesia. II. Adsorption of Fluoride from Aqueous Solution , 1947 .

[35]  M. Pavese,et al.  Sonochemical preparation of high surface area MgAl2O4 spinel. , 2009, Ultrasonics sonochemistry.

[36]  R. Simons.  Trace element removal from ash dam waters by nanofiltration and diffusion dialysis , 1993 .