Preparation and characterization of porous granular ceramic containing dispersed aluminum and iron oxides as adsorbents for fluoride removal from aqueous solution.

Porous granular ceramic adsorbents containing dispersed aluminum and iron oxides were synthesized by impregnating with salt solutions followed by precipitation at 600°C. In the present work detailed studies were carried out to investigate the effect of contact time, adsorbent dose, initial solution pH and co-existing anions. Characterization studies on the adsorbent by SEM, XRD, EDS, and BET analysis were carried out to clarify the adsorption mechanism. The adsorbents were sphere in shape, 2-3mm in particle size, highly porous and showed specific surface area of 50.69 sq m/g. The fluoride adsorption capacity of prepared adsorbent was 1.79 mg/g, and the maximum fluoride removal was obtained at pH 6. Both the Langmuir and Freundlich isotherm models were found to represent the measured adsorption data well. The experimental data were well explained with pseudo-second-order kinetic model. Results from this study demonstrated potential utility of Al/Fe dispersed in porous granular ceramics that could be developed into a viable technology for fluoride removal from aqueous solution.

[1]  Chuanping Feng,et al.  Fluoride removal from water by granular ceramic adsorption. , 2010, Journal of colloid and interface science.

[2]  A. Tor.  Removal of fluoride from water using anion-exchange membrane under Donnan dialysis condition. , 2007, Journal of hazardous materials.

[3]  Berhanu Gizaw,et al.  The origin of high bicarbonate and fluoride concentrations in waters of the Main Ethiopian Rift Valley, East African Rift system , 1996 .

[4]  Ali Tor,et al.  Removal of fluoride from water by using granular red mud: Batch and column studies. , 2009, Journal of hazardous materials.

[5]  A. C. Olis.  Aquatic Surface Chemistry: Chemical Processes at the Particle-Water Interface , 1988 .

[6]  S. Asai,et al.  Removal of fluoride ions from aqueous solution at low pH using schwertmannite. , 2008, Journal of hazardous materials.

[7]  E. Oguz.  Adsorption of fluoride on gas concrete materials. , 2005, Journal of hazardous materials.

[8]  C. Sundaram,et al.  Removal of fluoride from aqueous solution using protonated chitosan beads. , 2009, Journal of hazardous materials.

[9]  W. Weber,et al.  Kinetics of Adsorption on Carbon from Solution , 1963 .

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

[11]  A. Raichur,et al.  Adsorption of fluoride onto mixed rare earth oxides , 2001 .

[12]  Ikuo Abe,et al.  Adsorption of fluoride ions onto carbonaceous materials. , 2004, Journal of colloid and interface science.

[13]  M. Sujana,et al.  Iron and aluminium based mixed hydroxides: A novel sorbent for fluoride removal from aqueous solutions , 2010 .

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

[15]  W. Stumm.  Aquatic surface chemistry : chemical processes at the particle-water interface , 1987 .

[16]  Kavita,et al.  Groundwater quality in some villages of Haryana, India: focus on fluoride and fluorosis. , 2004, Journal of hazardous materials.

[17]  Gurdeep Singh,et al.  Removal of Fluoride from Spent Pot Liner Leachate Using Ion Exchange , 1999 .

[18]  S. Rayalu,et al.  Hydrated cement: a promising adsorbent for the removal of fluoride from aqueous solution. , 2008, Journal of hazardous materials.

[19]  T. Kojima,et al.  Arsenic adsorption from aqueous solution on synthetic zeolites. , 2009, Journal of hazardous materials.

[20]  P. King,et al.  Removal of lead from aqueous solution using Syzygium cumini L.: equilibrium and kinetic studies. , 2007, Journal of hazardous materials.

[21]  Irving Langmuir.  THE CONSTITUTION AND FUNDAMENTAL PROPERTIES OF SOLIDS AND LIQUIDS. PART I. SOLIDS. , 1916 .

[22]  C. Nanseu-Njiki,et al.  Preparation and characterization of charcoals that contain dispersed aluminum oxide as adsorbents for removal of fluoride from drinking water , 2010 .

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

[24]  S. Joshi,et al.  Estimation of sodium fluoride using HPLC in reverse osmosis experiments , 1992 .

[25]  J. Carrillo-Rivera,et al.  Use of abstraction regime and knowledge of hydrogeological conditions to control high-fluoride concentration in abstracted groundwater: San Luis Potosı́ basin, Mexico , 2002 .

[26]  Kamal K. Pant,et al.  Investigations on the column performance of fluoride adsorption by activated alumina in a fixed-bed , 2004 .

[27]  Yan-xin Wang,et al.  A Limestone Reactor for Fluoride Removal from Wastewaters , 2000 .

[28]  K. P. Singh,et al.  Controls on the genesis of some high-fluoride groundwaters in India , 2005 .

[29]  A. Toyoda,et al.  A new method for treating fluorine wastewater to reduce sludge and running costs , 2000 .

[30]  N. S. Tabrizi,et al.  Removal of dyes from colored textile wastewater by orange peel adsorbent: equilibrium and kinetic studies. , 2005, Journal of colloid and interface science.

[31]  W. J. Moore.  Magnetic field effects on the excitation spectra of neutral group II double acceptors in germanium , 1971 .

[32]  Mehmet Mahramanlıoğlu,et al.  Adsorption of fluoride from aqueous solution by acid treated spent bleaching earth , 2002 .

[33]  I. Langmuir.  THE CONSTITUTION AND FUNDAMENTAL PROPERTIES OF SOLIDS AND LIQUIDS , 1917 .

[34]  Jing Zhao,et al.  Preparation and Defluorination Performance of Activated Cerium(IV) Oxide/SiMCM-41 Adsorbent in Water. , 2001, Journal of colloid and interface science.

[35]  Karl Pomplun,et al.  Über die Adsorption in Lösungen , 2022 .

[36]  Min Yang,et al.  Fluoride removal in a fixed bed packed with granular calcite , 1999 .

[37]  Imam Bakhsh Solangi,et al.  An excellent fluoride sorption behavior of modified amberlite resin. , 2010, Journal of hazardous materials.

[38]  Arijit Goswami,et al.  Fluoride removal efficiency from aqueous solution by synthetic iron(III)–aluminum(III)–chromium(III) ternary mixed oxide , 2010 .

[39]  Min Yang,et al.  Fluoride removal performance of a novel Fe-Al-Ce trimetal oxide adsorbent. , 2007, Chemosphere.