Fluoride removal from water by adsorption-A review

Chemical Engineering Journal

Volumn 171, Issue 3, 2011, Pages 811-840

  Bhatnagar, Amit ^a   Kumar, Eva ^a   Sillanpää, Mika ^b  

^a UNIVERSITY OF PORTO   (Portugal)

^b LAPPEENRANTA UNIVERSITY OF TECHNOLOGY   (Finland)

Author keywords

Adsorption; Anions; Fluoride removal; Review; Water treatment

Indexed keywords

ADSORBENT SURFACES; ADSORPTION CAPACITIES; ADSORPTION PROCESS; ANTHROPOGENIC ACTIVITY; CONTACT TIME; FLUORIDE CONCENTRATIONS; FLUORIDE REMOVAL; HUMAN HEALTH; LITERATURE SURVEY; SURFACE-MODIFIED; TREATMENT TECHNOLOGIES;

ADSORBENTS; ADSORPTION; HEALTH RISKS; POTABLE WATER; WATER POLLUTION CONTROL; WATER TREATMENT;

DEWATERING;

EID: 79959988908     PISSN: 13858947     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.cej.2011.05.028     Document Type: Review

References (221)

1. Amini M., Mueller K., Abbaspour K.C., Rosenberg T., Afyuni M., Møller K.N., Sarr M., Johnson C.A. Statistical modeling of global geogenic fluoride contamination in groundwaters. Environ. Sci. Technol. 2008, 42:3662-3668.
2. Guidelines for Drinking-Water Quality [Electronic Resource]: Incorporating First Addendum, in: W.H.O. (Ed.), 2006, pp. 375-377.
3. Gaciri S.J., Davies T.C. The occurrence and geochemistry of fluoride in some natural waters of Kenya. J. Hydrol. 1993, 143:395-412.
4. Czarnowski W., Wrzesniowska K., Krechniak J. Fluoride in drinking water and human urine in Northern and Central Poland. Sci. Total Environ. 1996, 191:177-184.
5. Azbar N., Turkman A. Defluorination in drinking waters. Water Sci. Technol. 2000, 42:403-407.
6. Agarwal M., Rai K., Shrivastav R., Dass S. Deflouridation of water using amended clay. J. Cleaner Prod. 2003, 11:439-444.
7. Ayoob S., Gupta A.K. Fluoride in drinking water: A review on the status and stress effects. Crit. Rev. Environ. Sci. Technol. 2006, 36:433-487.
8. Wang L.F.M., Huang J.Z. Outline of control practice of endemic fluorosis in China. Social Sci. Med. 1995, 41:1191-1195.
9. Mjengera H., Mkongo G. Appropriate deflouridation technology for use in flourotic areas in Tanzania. Phys. Chem. Earth 2003, 28:1097-1104.
10. Diaz-Barriga F., Navarro-Quezada A., Grijalva M., Grimaldo M., Loyola-Rodriguez J.P., Ortiz M.D. Endemic fluorosis in Mexico. Fluoride 1997, 30:233-239.
11. Kruse E., Ainchil J. Fluoride variations in groundwater of an area in Buenos Aires Province. Argentina Environ. Geol. 2003, 44:86-89.
12. WRC, Distribution of fluoride-rich groundwater in Eastern and Mogwase region of Northern and North-west province, WRC Report No. 526/1/01 1.1-9.85 Pretoria, 2001.
13. Abe I., Iwasaki S., Tokimoto T., Kawasaki N., Nakamura T., Tanada S. Adsorption of fluoride ions onto carbonaceous materials. J. Colloid Interface Sci. 2004, 275:35-39.
14. Banks D., Reimann C., Røyset O., Skarphagen H., Sæther O.M. Natural concentrations of major and trace elements in some Norwegian bedrock groundwaters. Appl. Geochem. 1995, 10:1-16.
15. Edmunds M., Smedley P. Fluoride in natural waters. In Essentials of Medical Geology, Impacts of Natural Environment on Public Health 2005, Elsevier Academic Press.
16. Apambire W.B., Boyle D.R., Michel F.A. Geochemistry, genesis, and health implications of fluoriferous groundwaters in the upper regions of Ghana. Environ. Geochem. 1997, 33:13-24.
17. Reddy N.B., Prasad K.S.S. Pyroclastic fluoride in ground waters in some parts of Tadpatri Taluk, Anantapur district, Andhra Pradesh. Indian J. Environ. Health 2003, 45:285-288.
18. Reardon E.J., Wang Y. A Limestone Reactor for fluoride removal from wastewaters. Environ. Sci. Technol. 2000, 34:3247-3253.
19. Shen F., Chen X., Gao P., Chen G. Electrochemical removal of fluoride ions from industrial wastewater. Chem. Eng. Sci. 2003, 58:987-993.
20. de la Puente G., Pis J.J., Menéndez J.A., Grange P. Thermal stability of oxygenated functions in activated carbons. J. Anal. Appl. Pyrolysis 1997, 43:125-138.
21. W.H.O., Guidelines for Drinking Water Quality, Geneva, 2004.
22. Mahramanlioglu M., Kizilcikli I., Bicer I.O. Adsorption of fluoride from aqueous solution by acid treated spent bleaching earth. J. Fluorine Chem. 2002, 115:41-47.
23. Chinoy N.J. Effects of fluoride on physiology of animals and human beings. Indian J. Environ. Toxicol. 1991, 1:17-32.
24. Harrison P.T.C. Fluoride in water: a UK perspective. J. Fluorine Chem. 2005, 126:1448-1456.
25. Fan X., Parker D.J., Smith M.D. Adsorption kinetics of fluoride on low cost materials. Water Res. 2003, 37:4929-4937.
26. Zhou Y., Yu C., Shan Y. Adsorption of fluoride from aqueous solution on La3+ impregnated crosslinked gelatin. Sep. Purif. Technol. 2004, 36:89-94.
27. Islam M., Patel R.K. Thermal activation of basic oxygen furnace slag and evaluation of its fluoride removal efficiency. Chem. Eng. J. 2011, 169:68-77.
28. http://www.fluoridealert.org/health/.
29. F.W. Sollo Jr., T.E. Larson, H.F. Mueller, Fluoride Removal from Potable Water Supplies,University of Illinois, 1978.
30. Alain Tressaud (Ed.), Advances in Fluorine Science, Fluorine and the Environment, Agrochemicals, Archaeology, Green Chemistry & Water,, vol. 2, Elsevier, 2006.
31. Ghorai S., Pant K.K. Equilibrium, kinetics and breakthrough studies for adsorption of fluoride on activated alumina. Sep. Purif. Technol. 2005, 42:265-271.
32. Sujana M.G., Thakur R.S., Rao S.B. Removal of fluoride from aqueous solution by using alum sludge. J. Colloid Interface Sci. 1998, 206:94-101.
33. Huang C.J., Liu J.C. Precipitate flotation of fluoride-containing wastewater from a semiconductor manufacturer. Water Res. 1999, 33:3403-3412.
34. Popat K.M., Anand P.S., Dasare B.D. Selective removal of fluoride ions from water by the aluminium form of the aminomethylphosphonic acid-type ion exchanger. React. Polym. 1994, 23:23-32.
35. Luo F., Inoue K. The removal of fluoride ion by using metal(III)-loaded amberlite resins. Solvent Extr. Ion Exch. 2004, 22:305-322.
36. Solangi I.B., Memon S., Bhanger M.I. Removal of fluoride from aqueous environment by modified Amberlite resin. J. Hazard. Mater. 2009, 171:815-819.
37. Meenakshi S., Viswanathan N. Identification of selective ion-exchange resin for fluoride sorption. J. Colloid Interface Sci. 2007, 308:438-450.
38. Viswanathan N., Meenakshi S. Role of metal ion incorporation in ion exchange resin on the selectivity of fluoride. J. Hazard. Mater. 2009, 162:920-930.
39. Simons R. Trace element removal from ash dam waters by nanofiltration and diffusion dialysis. Desalination 1993, 89:325-341.
40. Sehn P. Fluoride removal with extra low energy reverse osmosis membranes: three years of large scale field experience in Finland. Desalination 2008, 223:73-84.
41. Adhikary S.K., Tipnis U.K., Harkare W.P., Govindan K.P. Defluoridation during desalination of brackish water by electrodialysis. Desalination 1989, 71:301-312.
42. Ayoob S., Gupta A.K., Bhat V.T. A conceptual overview on sustainable technologies for defluoridation of drinking water and removal mechanisms. Crit. Rev. Environ. Sci. Technol. 2008, 38:401-470.
43. WHO, Guidelines for drinking-water quality, 3rd ed., 2004, World Health Organisation, Geneva, pp. 375-378, 301-303.
44. Meenakshi, Maheshwari R.C. Fluoride in drinking water and its removal. J. Hazard. Mater. 2006, 137:456-463.
45. Mohapatra M., Anand S., Mishra B.K., Giles D.E., Singh P. Review of fluoride removal from drinking water. J. Environ. Manage. 2009, 91:67-77.
46. Miretzky P., Cirelli A.F. Fluoride removal from water by chitosan derivatives and composites: A review. J. Fluorine Chem. 2011, 132:231-240.
47. Farrah H., Slavek J., Pickering W.F. Fluoride interactions with hydrous aluminum oxides and alumina. Aust. J. Soil Res. 1987, 25:55-69.
48. Ku Y., Chiou H.-M. The adsorption of fluoride ion from aqueous solution by activated alumina. Water Air Soil Pollut. 2002, 133:349-361.
49. Bahena J.L.R., Cabrera A.R., Valdivieso A.L., Urbina R.H. Fluoride adsorption onto α-Al2O3 and its effect on the zeta potential at the alumina-aqueous electrolyte interface. Sep. Sci. Technol. 2002, 37:1973-1987.
50. Ghorai S., Pant K.K. Investigations on the column performance of fluoride adsorption by activated alumina in a fixed-bed. Chem. Eng. J. 2004, 98:165-173.
51. Pietrelli L. Fluoride wastewater treatment by adsorption onto metallurgical grade alumina. Anal. Chim. 2005, 95:303-312.
52. Valdivieso A.L., Reyes Bahena J.L., Song S., Herrera Urbina R. Temperature effect on the zeta potential and fluoride adsorption at the α-Al2O3/aqueous solution interface. J. Colloid Interface Sci. 2006, 298:1-5.
53. Shimelis B., Zewge F., Chandravanshi B.S. Removal of excess fluoride from water by aluminum hydroxide. Bull. Chem. Soc. Ethiopia 2006, 20:17-34.
54. Bishop P.L., Sansoucy G. Fluoride removal from drinking water by fluidized activated alumina adsorption. J. Am. Water Works Assoc. 1978, 70:554-559.
55. Choi W.W., Chen K.Y. Removal of fluoride from waters by adsorption. J. Am. Water Works Assoc. 1979, 71:562-570.
56. Hao O.J., Huang C.P. Adsorption characteristics of fluoride onto hydrous alumina. J. Environ. Eng. 1986, 112:1054-1069.
57. Fletcher H.R., Smith D.W., Pivonka P. Modeling the sorption of fluoride onto alumina. J. Environ. Eng. 2006, 132:229-246.
58. Wasay S.A., Tokunaga S., Park S.W. Removal of hazardous anions from aqueous solutions by La(III)- and Y(lll)-impregnated alumina. Sep. Sci. Technol. 1996, 31:1501-1514.
59. Puri B.K., Balani S. Trace determination of fluoride using lanthanum hydroxide supported on alumina. J. Environ. Sci. Health Part A: Toxic/Hazardous Subst. Environ. Eng. 2000, 35:109-121.
60. Tripathy S.S., Bersillon J.-L., Gopal K. Removal of fluoride from drinking water by adsorption onto alum-impregnated activated alumina. Sep. Purif. Technol. 2006, 50:310-317.
61. Maliyekkal S.M., Sharma A.K., Philip L. Manganese-oxide-coated alumina: A promising sorbent for defluoridation of water. Water Res. 2006, 40:3497-3506.
62. Teng S.-X., Wang S.-G., Gong W.-X., Liu X.-W., Gao B.-Y. Removal of fluoride by hydrous manganese oxide-coated alumina: Performance and mechanism. J. Hazard. Mater. 2009, 168:1004-1011.
63. Bansiwal A., Pillewan P., Biniwale R.B., Rayalu S.S. Copper oxide incorporated mesoporous alumina for defluoridation of drinking water. Microporous Mesoporous Mater. 2010, 129:54-61.
64. Maliyekkal S.M., Shukla S., Philip L., Nambi I.M. Enhanced fluoride removal from drinking water by magnesia-amended activated alumina granules. Chem. Eng. J. 2008, 140:183-192.
65. Camacho L.M., Torres A., Saha D., Deng S. Adsorption equilibrium and kinetics of fluoride on sol-gel-derived activated alumina adsorbents. J. Colloid Interface Sci. 2010, 349:307-313.
66. Kamble S.P., Deshpande G., Barve P.P., Rayalu S., Labhsetwar N.K., Malyshew A., Kulkarni B.D. Adsorption of fluoride from aqueous solution by alumina of alkoxide nature: Batch and continuous operation. Desalination 2010, 264:15-23.
67. Turner B.D., Binning P., Stipp S.L.S. Fluoride removal by calcite: evidence for fluorite precipitation and surface adsorption. Environ. Sci. Technol. 2005, 39:9561-9568.
68. Islam M., Patel R.K. Evaluation of removal efficiency of fluoride from aqueous solution using quick lime. J. Hazard. Mater. 2007, 143:303-310.
69. Jain S., Jayaram R.V. Removal of fluoride from contaminated drinking water using unmodified and aluminium hydroxide impregnated blue lime stone waste. Sep. Sci. Technol. 2009, 44:1436-1451.
70. Eskandarpour A., Onyango M.S., Ochieng A., Asai S. Removal of fluoride ions from aqueous solution at low pH using schwertmannite. J. Hazard. Mater. 2008, 152:571-579.
71. Streat M., Hellgardt K., Newton N.L.R. Hydrous ferric oxide as an adsorbent in water treatment: Part 3: Batch and mini-column adsorption of arsenic, phosphorus, fluorine and cadmium ions. Process Safety Environ. Protect. 2008, 86:21-30.
72. Kumar E., Bhatnagar A., Ji M., Jung W., Lee S.-H., Kim S.-J., Lee G., Song H., Choi J.-Y., Yang J.-S., Jeon B.-H. Defluoridation from aqueous solutions by granular ferric hydroxide (GFH). Water Res. 2009, 43:490-498.
73. Mohapatra M., Rout K., Gupta S., Singh P., Anand S., Mishra B. Facile synthesis of additive-assisted nano goethite powder and its application for fluoride remediation. J. Nanopart. Res. 2010, 12:681-686.
74. Liu Q., Guo H., Shan Y. Adsorption of fluoride on synthetic siderite from aqueous solution. J. Fluorine Chem. 2010, 131:635-641.
75. Zhongzhi J., Zhonglin C., Min Y., Yu Z., Guibai L. Adsorption of fluoride ion by inorganic cerium based adsorbent. High Technol. Lett. 2004, 10:83-86.
76. Mohapatra D., Mishra D., Mishra S.P., Chaudhury G.R., Das R.P. Use of oxide minerals to abate fluoride from water. J. Colloid Interface Sci. 2004, 275:355-359.
77. Xiuru Y., Kuanxiu S., Jianping W., Liuchang H., Zhaohui Y. Preparation of CeO2-TiO2/SiO2 and its removal properties for fluoride ion. J. Rare Earths 1998, 16:279-280.
78. Zhu P., Wang H., Sun B., Deng P., Hou S., Yu Y. Adsorption of fluoride from aqueous solution by magnesia-amended silicon dioxide granules. J. Chem. Technol. Biotechnol. 2009, 84:1449-1455.
79. Biswas K., Gupta K., Ghosh U.C. Adsorption of fluoride by hydrous iron(III)-tin(IV) bimetal mixed oxide from the aqueous solutions. Chem. Eng. J. 2009, 149:196-206.
80. Biswas K., Debnath S., Ghosh U.C. Physicochemical aspects on fluoride adsorption for removal from water by synthetic hydrous iron(III)-chromium(III) mixed oxide. Sep. Sci. Technol. 2010, 45:472-485.
81. Biswas K., Gupta K., Goswami A., Ghosh U.C. Fluoride removal efficiency from aqueous solution by synthetic iron(III)-aluminum(III)-chromium(III) ternary mixed oxide. Desalination 2010, 255:44-51.
82. Xu Y.-M., Ning A.-R., Zhao J. Preparation and defluorination performance of activated cerium(IV) oxide/SiMCM-41 adsorbent in water. J. Colloid Interface Sci. 2001, 235:66-69.
83. Liu H., Deng S., Li Z., Yu G., Huang J. Preparation of Al-Ce hybrid adsorbent and its application for defluoridation of drinking water. J. Hazard. Mater. 2010, 179:424-430.
84. Wu X., Zhang Y., Dou X., Yang M. Fluoride removal performance of a novel Fe-Al-Ce trimetal oxide adsorbent. Chemosphere 2007, 69:1758-1764.
85. Sujana M.G., Soma G., Vasumathi N., Anand S. Studies on fluoride adsorption capacities of amorphous Fe/Al mixed hydroxides from aqueous solutions. J. Fluorine Chem. 2009, 130:749-754.
86. Sujana M.G., Anand S. Iron and aluminium based mixed hydroxides: A novel sorbent for fluoride removal from aqueous solutions. Appl. Surf. Sci. 2010, 256:6956-6962.
87. Wajima T., Umeta Y., Narita S., Sugawara K. Adsorption behavior of fluoride ions using a titanium hydroxide-derived adsorbent. Desalination 2009, 249:323-330.
88. Karthikeyan M., Elango K.P. Removal of fluoride from water using aluminium containing compounds. J. Environ. Sci. (China) 2009, 21:1513-1518.
89. Deng S., Liu H., Zhou W., Huang J., Yu G. Mn-Ce oxide as a high-capacity adsorbent for fluoride removal from water. J. Hazard. Mater. 2011, 186:1360-1366.
90. Bhargava D.S., Killedar D.J. Fluoride adsorption on fishbone charcoal through a moving media adsorber. Water Res. 1992, 26:781-788.
91. Kaseva M.E. Optimization of regenerated bone char for fluoride removal in drinking water: A case study in Tanzania. J. Water Health 2006, 4:139-147.
92. Janardhana C., Nageswara Rao G., Sai Sathish R., Sunil Kumar P., Anil Kumar V., Vijay Madhav M. Study on defluoridation of drinking water using zirconium ion impregnated activated charcoals. Indian J. Chem. Technol. 2007, 14:350-354.
93. Gupta A.K., Deva D., Sharma A., Verma N. Adsorptive removal of fluoride by micro-nanohierarchal web of activated carbon fibers. Ind. Eng. Chem. Res. 2009, 48:9697-9707.
94. Ma Y., Wang S.-G., Fan M., Gong W.-X., Gao B.-Y. Characteristics and defluoridation performance of granular activated carbons coated with manganese oxides. J. Hazard. Mater. 2009, 168:1140-1146.
95. Karthikeyan M., Elango K.P. Removal of fluoride from aqueous solution using graphite: A kinetic and thermodynamic study. Indian J. Chem. Technol. 2008, 15:525-532.
96. Sivasamy A., Singh K.P., Mohan D., Maruthamuthu M. Studies on defluoridation of water by coal-based sorbents. J. Chem. Technol. Biotechnol. 2001, 76:717-722.
97. Borah L., Dey N.C. Removal of fluoride from low TDS water using low grade coal. Indian J. Chem. Technol. 2009, 16:361-363.
98. Moges G., Zewge F., Socher M. Preliminary investigations on the defluoridation of water using fired clay chips. J. African Earth Sci. 1996, 22:479-482.
99. Coetzee P.P., Coetzee L.L., Puka R., Mubenga S. Characterisation of selected South African clays for defluoridation of natural waters. Water SA 2003, 29:331-338.
100. Karthikeyan G., Pius A., Alagumuthu G. Fluoride adsorption studies of montmorillonite clay. Indian J. Chem. Technol. 2005, 12:263-272.
101. Tor A. Removal of fluoride from an aqueous solution by using montmorillonite. Desalination 2006, 201:267-276.
102. Hamdi N., Srasra E. Removal of fluoride from acidic wastewater by clay mineral: Effect of solid-liquid ratios. Desalination 2007, 206:238-244.
103. Sarkar M., Banerjee A., Pramanick P.P., Sarkar A.R. Use of laterite for the removal of fluoride from contaminated drinking water. J. Colloid Interface Sci. 2006, 302:432-441.
104. Sarkar M., Banerjee A., Pramanick P.P., Sarkar A.R. Design and operation of fixed bed laterite column for the removal of fluoride from water. Chem. Eng. J. 2007, 131:329-335.
105. Maiti A., Basu J.K., De S. Chemical treated laterite as promising fluoride adsorbent for aqueous system and kinetic modeling. Desalination 2011, 265:28-36.
106. Gogoi P.K., Baruah R. Fluoride removal from water by adsorption on acid activated kaolinite clay. Indian J. Chem. Technol. 2008, 15:500-503.
107. Ma Y.X., Shi F.M., Zheng X.L., Ma J., Yuan J.M. Preparation of granular Zr-loaded bentonite and its defluoridation properties from aqueous solutions. J. Harbin Institute of Technol. (New Series) 2005, 12:236-240.
108. Kamble S.P., Dixit P., Rayalu S.S., Labhsetwar N.K. Defluoridation of drinking water using chemically modified bentonite clay. Desalination 2009, 249:687-693.
109. Thakre D., Rayalu S., Kawade R., Meshram S., Subrt J., Labhsetwar N. Magnesium incorporated bentonite clay for defluoridation of drinking water. J. Hazard. Mater. 2010, 180:122-130.
110. Zhang J., Xie S., Ho Y.-S. Removal of fluoride ions from aqueous solution using modified attapulgite as adsorbent. J. Hazard. Mater. 2009, 165:218-222.
111. Ramdani A., Taleb S., Benghalem A., Ghaffour N. Removal of excess fluoride ions from Saharan brackish water by adsorption on natural materials. Desalination 2010, 250:408-413.
112. Onyango M.S., Kojima Y., Aoyi O., Bernardo E.C., Matsuda H. Adsorption equilibrium modeling and solution chemistry dependence of fluoride removal from water by trivalent-cation-exchanged zeolite F-9. J. Colloid Interface Sci. 2004, 279:341-350.
113. Onyango M.S., Kojima Y., Kumar A., Kuchar D., Kubota M., Matsuda H. Uptake of fluoride by Al3+ pretreated low-silica synthetic zeolites: Adsorption equilibrium and rate studies. Sep. Sci. Technol. 2006, 41:683-704.
114. Onyango M.S., Leswifi T.Y., Ochieng A., Kuchar D., Otieno F.O., Matsuda H. Breakthrough analysis for water defluoridation using surface-tailored zeolite in a fixed bed column. Ind. Eng. Chem. Res. 2009, 48:931-937.
115. Samatya S., Yüksel Ü., Yüksel M., Kabay N. Removal of fluoride from water by metal ions (Al3+, La3+ and ZrO2+) loaded natural zeolite. Sep. Sci. Technol. 2007, 42:2033-2047.
116. Kamble S.P., Jagtap S., Labhsetwar N.K., Thakare D., Godfrey S., Devotta S., Rayalu S.S. Defluoridation of drinking water using chitin, chitosan and lanthanum-modified chitosan. Chem. Eng. J. 2007, 129:173-180.
117. Yao R., Meng F., Zhang L., Ma D., Wang M. Defluoridation of water using neodymium-modified chitosan. J. Hazard. Mater. 2009, 165:454-460.
118. Vijaya Y., Krishnaiah A. Sorptive response profile of chitosan coated silica in the defluoridation of aqueous solution. e-J. Chem. 2009, 6:713-724.
119. Viswanathan N., Meenakshi S. Enhanced fluoride sorption using La(III) incorporated carboxylated chitosan beads. J. Colloid Interface Sci. 2008, 322:375-383.
120. Viswanathan N., Meenakshi S. Selective sorption of fluoride using Fe(III) loaded carboxylated chitosan beads. J. Fluorine Chem. 2008, 129:503-509.
121. Viswanathan N., Sairam Sundaram C., Meenakshi S. Development of multifunctional chitosan beads for fluoride removal. J. Hazard. Mater. 2009, 167:325-331.
122. Viswanathan N., Sundaram C.S., Meenakshi S. Removal of fluoride from aqueous solution using protonated chitosan beads. J. Hazard. Mater. 2009, 161:423-430.
123. Viswanathan N., Meenakshi S. Synthesis of Zr(IV) entrapped chitosan polymeric matrix for selective fluoride sorption. Colloids Surf. B: Biointerfaces 2009, 72:88-93.
124. Sundaram C.S., Viswanathan N., Meenakshi S. Defluoridation of water using magnesia/chitosan composite. J. Hazard. Mater. 2009, 163:618-624.
125. Sundaram C.S., Viswanathan N., Meenakshi S. Fluoride sorption by nano-hydroxyapatite/chitin composite. J. Hazard. Mater. 2009, 172:147-151.
126. Viswanathan N., Meenakshi S. Selective fluoride adsorption by a hydrotalcite/chitosan composite. Appl. Clay Sci. 2010, 48:607-611.
127. Viswanathan N., Meenakshi S. Development of chitosan supported zirconium(IV) tungstophosphate composite for fluoride removal. J. Hazard. Mater. 2010, 176:459-465.
128. Bansiwal A., Thakre D., Labhshetwar N., Meshram S., Rayalu S. Fluoride removal using lanthanum incorporated chitosan beads. Colloids Surf. B: Biointerfaces 2009, 74:216-224.
129. Jagtap S., Yenkie M.K., Das S., Rayalu S. Synthesis and characterization of lanthanum impregnated chitosan flakes for fluoride removal in water. Desalination 2011, 273:267-275.
130. Swain S.K., Dey R.K., Islam M., Patel R.K., Jha U., Patnaik T., Airoldi C. Removal of fluoride from aqueous solution using aluminum-impregnated chitosan biopolymer. Sep. Sci. Technol. 2009, 44:2096-2116.
131. Thakre D., Jagtap S., Bansiwal A., Labhsetwar N., Rayalu S. Synthesis of La-incorporated chitosan beads for fluoride removal from water. J. Fluorine Chem. 2010, 131:373-377.
132. Ma W., Ya F.-Q., Han M., Wang R. Characteristics of equilibrium, kinetics studies for adsorption of fluoride on magnetic-chitosan particle. J. Hazard. Mater. 2007, 143:296-302.
133. Jagtap S., Thakre D., Wanjari S., Kamble S., Labhsetwar N., Rayalu S. New modified chitosan-based adsorbent for defluoridation of water. J. Colloid Interface Sci. 2009, 332:280-290.
134. Davila-Rodriguez J.L., Escobar-Barrios V.A., Shirai K., Rangel-Mendez J.R. Synthesis of a chitin-based biocomposite for water treatment: Optimization for fluoride removal. J. Fluorine Chem. 2009, 130:718-726.
135. Thakre D., Jagtap S., Sakhare N., Labhsetwar N., Meshram S., Rayalu S. Chitosan based mesoporous Ti-Al binary metal oxide supported beads for defluoridation of water. Chem. Eng. J. 2010, 158:315-324.
136. Mohan S.V., Ramanaiah S.V., Rajkumar B., Sarma P.N. Removal of fluoride from aqueous phase by biosorption onto algal biosorbent Spirogyra sp.-IO2: Sorption mechanism elucidation. J. Hazard. Mater. 2007, 141:465-474.
137. Mohan S.V., Ramanaiah S.V., Rajkumar B., Sarma P.N. Biosorption of fluoride from aqueous phase onto algal Spirogyra IO1 and evaluation of adsorption kinetics. Bioresour. Technol. 2007, 98:1006-1011.
138. Bhatnagar M., Bhatnagar A., Jha S. Interactive biosorption by microalgal biomass as a tool for fluoride removal. Biotechnol. Lett. 2002, 24:1079-1081.
139. Ramanaiah S.V., Venkata Mohan S., Sarma P.N. Adsorptive removal of fluoride from aqueous phase using waste fungus (Pleurotus ostreatus 1804) biosorbent: Kinetics evaluation. Ecol. Eng. 2007, 31:47-56.
140. Miretzky P., Muñoz C., Carrillo-Chávez A. Fluoride removal from aqueous solution by Ca-pretreated macrophyte biomass. Environ. Chem. 2008, 5:68-72.
141. Sinha S., Pandey K., Mohan D., Singh K.P. Removal of fluoride from aqueous solutions by Eichhornia crassipes biomass and its carbonized form. Ind. Eng. Chem. Res. 2003, 42:6911-6918.
142. Liao X.-P., Shi B. Adsorption of fluoride on zirconium(IV)-impregnated collagen fiber. Environ. Sci. Technol. 2005, 39:4628-4632.
143. Vijaya Y., Popuri S.R., Reddy A.S., Krishnaiah A. Synthesis and characterization of glutaraldehyde-crosslinked calcium alginate for fluoride removal from aqueous solutions. J. Appl. Polym. Sci. 2011, 120:3443-3452.
144. Parmar H.S., Patel J.B., Sudhakar P., Koshy V.J. Removal of fluoride from water with powdered corn cobs. J. Environ. Sci. Eng. 2006, 48:135-138.
145. Mohan D., Singh K.P., Singh V.K. Wastewater treatment using low cost activated carbons derived from agricultural byproducts-A case study. J. Hazard. Mater. 2008, 152:1045-1053.
146. Sivabalan R., Rengaraj S., Arabindoo B., Murugesan V. Cashewnut sheath carbon: A new sorbent for defluoridation of water. Indian J. Chem. Technol. 2003, 10:217-222.
147. Sathish R.S., Raju N.S.R., Raju G.S., Rao G.N., Kumar K.A., Janardhana C. Equilibrium and kinetic studies for fluoride adsorption from water on zirconium impregnated coconut shell carbon. Sep. Sci. Technol. 2007, 42:769-788.
148. Sathish R.S., Sairam S., Raja V.G., Rao G.N., Janardhana C. Defluoridation of water using zirconium impregnated coconut fiber carbon. Sep. Sci. Technol. 2008, 43:3676-3694.
149. Alagumuthu G., Rajan M. Equilibrium and kinetics of adsorption of fluoride onto zirconium impregnated cashew nut shell carbon. Chem. Eng. J. 2010, 158:451-457.
150. Chaturvedi A.K., Yadava K.P., Pathak K.C., Singh V.N. Defluoridation of water by adsorption on fly ash. Water Air Soil Pollut. 1990, 49:51-61.
151. Nigussie W., Zewge F., Chandravanshi B.S. Removal of excess fluoride from water using waste residue from alum manufacturing process. J. Hazard. Mater. 2007, 147:954-963.
152. Çengeloglu Y., Kir E., Ersöz M. Removal of fluoride from aqueous solution by using red mud. Sep. Purif. Technol. 2002, 28:81-86.
153. Tor A., Danaoglu N., Arslan G., Cengeloglu Y. Removal of fluoride from water by using granular red mud: Batch and column studies. J. Hazard. Mater. 2009, 164:271-278.
154. Gupta V.K., Ali I., Saini V.K. Defluoridation of wastewaters using waste carbon slurry. Water Res. 2007, 41:3307-3316.
155. Çinarli A., Biçer Ö., Mahramanlioĝlu M. Removal of fluoride using the adsorbents produced from mining waste. Fresenius Environ. Bull. 2005, 14:520-525.
156. Kemer B., Ozdes D., Gundogdu A., Bulut V.N., Duran C., Soylak M. Removal of fluoride ions from aqueous solution by waste mud. J. Hazard. Mater. 2009, 168:888-894.
157. Das N., Pattanaik P., Das R. Defluoridation of drinking water using activated titanium rich bauxite. J. Colloid Interface Sci. 2005, 292:1-10.
158. Wei N., Luan Z.-K., Wang J., Shi L., Zhao Y., Wu J.-W. Preparation of modified red mud with aluminum and its adsorption characteristics on fluoride removal. Chin. J. Inorg. Chem. 2009, 25:849-854.
159. Lv L., He J., Wei M., Duan X. Kinetic Studies on fluoride removal by calcined layered double hydroxides. Ind. Eng. Chem. Res. 2006, 45:8623-8628.
160. Lv L., He J., Wei M., Evans D.G., Zhou Z. Treatment of high fluoride concentration water by MgAl-CO3 layered double hydroxides: Kinetic and equilibrium studies. Water Res. 2007, 41:1534-1542.
161. Das D.P., Das J., Parida K. Physicochemical characterization and adsorption behavior of calcined Zn/Al hydrotalcite-like compound (HTlc) towards removal of fluoride from aqueous solution. J. Colloid Interface Sci. 2003, 261:213-220.
162. Wang H., Chen J., Cai Y., Ji J., Liu L., Teng H.H. Defluoridation of drinking water by Mg/Al hydrotalcite-like compounds and their calcined products. Appl. Clay Sci. 2007, 35:59-66.
163. Jimenez-Núñez M.L., Olguín M.T., Solache-Ríos M. Fluoride removal from aqueous solutions by magnesium, nickel, and cobalt calcined hydrotalcite-like compounds. Sep. Sci. Technol. 2007, 42:3623-3639.
164. Singh I.B., Prasad M. Study on the fluoride removal characteristics of mineral (fluorapatite). Indian J. Chem. Technol. 2004, 11:185-189.
165. Gao S., Cui J., Wei Z. Study on the fluoride adsorption of various apatite materials in aqueous solution. J. Fluorine Chem. 2009, 130:1035-1041.
166. Hammari L.E.L., Laghzizil A., Barboux P., Lahlil K., Saoiabi A. Retention of fluoride ions from aqueous solution using porous hydroxyapatite: Structure and conduction properties. J. Hazard. Mater. 2004, 114:41-44.
167. Badillo-Almaraz V.E., Armando Flores J., Arriola H., López F.A., Ruiz-Ramirez L. Elimination of fluoride ions in water for human consumption using hydroxyapatite as an adsorbent. J. Radioanal. Nucl. Chem. 2007, 271:741-744.
168. Gao S., Sun R., Wei Z., Zhao H., Li H., Hu F. Size-dependent defluoridation properties of synthetic hydroxyapatite. J. Fluorine Chem. 2009, 130:550-556.
169. Sundaram C.S., Viswanathan N., Meenakshi S. Defluoridation chemistry of synthetic hydroxyapatite at nano scale: Equilibrium and kinetic studies. J. Hazard. Mater. 2008, 155:206-215.
170. Yadav A.K., Kaushik C.P., Haritash A.K., Kansal A., Rani N. Defluoridation of groundwater using brick powder as an adsorbent. J. Hazard. Mater. 2006, 128:289-293.
171. Oguz E. Adsorption of fluoride on gas concrete materials. J. Hazard. Mater. 2005, 117:227-233.
172. Oguz E. Equilibrium isotherms and kinetics studies for the sorption of fluoride on light weight concrete materials. Colloids Surf. A: Physicochem. Eng. Aspects 2007, 295:258-263.
173. Kagne S., Jagtap S., Dhawade P., Kamble S.P., Devotta S., Rayalu S.S. Hydrated cement: A promising adsorbent for the removal of fluoride from aqueous solution. J. Hazard. Mater. 2008, 154:88-95.
174. Ayoob S., Gupta A.K., Bhakat P.B., Bhat V.T. Investigations on the kinetics and mechanisms of sorptive removal of fluoride from water using alumina cement granules. Chem. Eng. J. 2008, 140:6-14.
175. Ayoob S., Gupta A.K. Insights into isotherm making in the sorptive removal of fluoride from drinking water. J. Hazard. Mater. 2008, 152:976-985.
176. Ayoob S., Gupta A.K. Performance evaluation of alumina cement granules in removing fluoride from natural and synthetic waters. Chem. Eng. J. 2009, 150:485-491.
177. Li Y.-H., Wang S., Cao A., Zhao D., Zhang X., Xu C., Luan Z., Ruan D., Liang J., Wu D., Wei B. Adsorption of fluoride from water by amorphous alumina supported on carbon nanotubes. Chem. Phys. Lett. 2001, 350:412-416.
178. Li Y.-H., Wang S., Zhang X., Wei J., Xu C., Luan Z., Wu D. Adsorption of fluoride from water by aligned carbon nanotubes. Mater. Res. Bull. 2003, 38:469-476.
179. Li Y.H., Wang S., Zhang X., Wei J., Xu C., Luan Z., Wu D., Wei B. Removal of fluoride from water by carbon nanotube supported alumina. Environ. Technol. 2003, 24:391-398.
180. Pathak A., Panda A.B., Tarafdar A., Pramanik P. Synthesis of nano-sized metal oxide powders and their application in separation technology. J. Indian Chem. Soc. 2003, 80:289-296.
181. Wang S.-G., Ma Y., Shi Y.-J., Gong W.-X. Defluoridation performance and mechanism of nano-scale aluminum oxide hydroxide in aqueous solution. J. Chem. Technol. Biotechnol. 2009, 84:1043-1050.
182. Patel G., Pal U., Menon S. Removal of fluoride from aqueous solution by CaO nanoparticles. Sep. Sci. Technol. 2009, 44:2806-2826.
183. Chen L., Wu H.-X., Wang T.-J., Jin Y., Zhang Y., Dou X.-M. Granulation of Fe-Al-Ce nano-adsorbent for fluoride removal from drinking water by spray coating on sand in a fluidized bed. Powder Technol. 2009, 193:59-64.
184. Chang C.-F., Lin P.-H., Höll W. Aluminum-type superparamagnetic adsorbents: Synthesis and application on fluoride removal. Colloids Surf. A: Physicochem. Eng. Aspects 2006, 280:194-202.
185. Zhao X., Wang J., Wu F., Wang T., Cai Y., Shi Y., Jiang G. Removal of fluoride from aqueous media by Fe3O4@Al(OH)3 magnetic nanoparticles. J. Hazard. Mater. 2010, 173:102-109.
186. Maliyekkal S.M., Anshup K.R., Antony T., Pradeep High yield combustion synthesis of nanomagnesia and its application for fluoride removal. Sci. Total Environ. 2010, 408:2273-2282.
187. Kumar E., Bhatnagar A., Kumar U., Sillanpää M. Defluoridation from aqueous solutions by nano-alumina: Characterization and sorption studies. J. Hazard. Mater. 2011, 186:1042-1049.
188. Wasay S.A., Haron M.J., Tokunaga S. Adsorption of fluoride, phosphate, and arsenate ions on lanthanum-impregnated silica gel. Water Environ. Res. 1996, 68:295-300.
189. Srimurali M., Pragathi A., Karthikeyan J. A study on removal of fluorides from drinking water by adsorption onto low-cost materials. Environ. Pollut. 1998, 99:285-289.
190. Nemade P.D., Rao A.V., Alappat B.J. Removal of fluorides from water using low cost adsorbents. Water Sci. Technol.: Water Supply 2002, 2:311-317.
191. Ruixia L., Jinlong G., Hongxiao T. Adsorption of fluoride, phosphate, and arsenate ions on a new type of ion exchange fiber. J. Colloid Interface Sci. 2002, 248:268-274.
192. Sujana M.G., Pradhan H.K., Anand S. Studies on sorption of some geomaterials for fluoride removal from aqueous solutions. J. Hazard. Mater. 2009, 161:120-125.
193. Kagne S., Jagtap S., Thakare D., Devotta S., Rayalu S.S. Bleaching powder: A versatile adsorbent for the removal of fluoride from aqueous solution. Desalination 2009, 243:22-31.
194. Karthikeyan M., Satheeshkumar K.K., Elango K.P. Removal of fluoride ions from aqueous solution by conducting polypyrrole. J. Hazard. Mater. 2009, 167:300-305.
195. Chen N., Zhang Z., Feng C., Sugiura N., Li M., Chen R. Fluoride removal from water by granular ceramic adsorption. J. Colloid Interface Sci. 2010, 348:579-584.
196. Zhao Y., Li X., Liu L., Chen F. Fluoride removal by Fe(III)-loaded ligand exchange cotton cellulose adsorbent from drinking water. Carbohydr. Polym. 2008, 72:144-150.
197. Xu X., Li Q., Cui H., Pang J., Sun L., An H., Zhai J. Adsorption of fluoride from aqueous solution on magnesia-loaded fly ash cenospheres. Desalination 2011, 272:233-239.
198. Chen N., Zhang Z., Feng C., Zhu D., Yang Y., Sugiura N. Preparation and characterization of porous granular ceramic containing dispersed aluminum and iron oxides as adsorbents for fluoride removal from aqueous solution. J. Hazard. Mater. 2011, 186:863-868.
199. Bhaumik M., Leswifi T.Y., Maity A., Srinivasu V.V., Onyango M.S. Removal of fluoride from aqueous solution by polypyrrole/Fe3O4 magnetic nanocomposite. J. Hazard. Mater. 2011, 186:150-159.
200. Liang W., Zhan L., Piao L., Russel C. Fluoride removal performance of glass derived hydroxyapatite. Mater. Res. Bull. 2011, 46:205-209.
201. Jagtap S., Yenkie M.K.N., Labhsetwar N., Rayalu S. Defluoridation of drinking water using chitosan based mesoporous alumina. Microporous Mesoporous Mater. 2011, 142:454-463.
202. Daifullah A.A.M., Yakout S.M., Elreefy S.A. Adsorption of fluoride in aqueous solutions using KMnO4-modified activated carbon derived from steam pyrolysis of rice straw. J. Hazard. Mater. 2007, 147:633-643.
203. Tchomgui-Kamga E., Alonzo V., Nanseu-Njiki C.P., Audebrand N., Ngameni E., Darchen A. Preparation and characterization of charcoals that contain dispersed aluminum oxide as adsorbents for removal of fluoride from drinking water. Carbon 2010, 48:333-343.
204. Viswanathan N., Meenakshi S. Enriched fluoride sorption using alumina/chitosan composite. J. Hazard. Mater. 2010, 178:226-232.
205. Sujana M.G., Anand S. Fluoride removal studies from contaminated ground water by using bauxite. Desalination 2011, 267:222-227.
206. Islam M., Mishra P.C., Patel R. Fluoride adsorption from aqueous solution by a hybrid thorium phosphate composite. Chem. Eng. J. 2011, 166:978-985.
207. Ganvir V., Das K. Removal of fluoride from drinking water using aluminum hydroxide coated rice husk ash. J. Hazard. Mater. 2011, 185:1287-1294.
208. Kang J., Li B., Song J., Li D., Yang J., Zhan W., Liu D. Defluoridation of water using calcined magnesia/pullulan composite. Chem. Eng. J. 2011, 166:765-771.
209. Santhi D. Removal of fluoride in drinking water by drumstick bark and its leaves. J. Ind. Pollut. Control 2010, 26:119-120.
210. Karthikeyan M., Kumar K.K.S., Elango K.P. Batch sorption studies on the removal of fluoride ions from water using eco-friendly conducting polymer/bio-polymer composites. Desalination 2011, 267:49-56.
211. Ma Y., Shi F., Zheng X., Ma J., Gao C. Removal of fluoride from aqueous solution using granular acid-treated bentonite (GHB): Batch and column studies. J. Hazard. Mater. 2011, 185:1073-1080.
212. Tian Y., Wu M., Liu R., Wang D., Lin X., Liu W., Ma L., Li Y., Huang Y. Modified native cellulose fibers-A novel efficient adsorbent for both fluoride and arsenic. J. Hazard. Mater. 2011, 185:93-100.
213. Huang Y.-H., Shih Y.-J., Chang C.-C. Adsorption of fluoride by waste iron oxide: The effects of solution pH, major coexisting anions, and adsorbent calcination temperature, J. Hazard. Mater. 2011, 186:1355-1359.
214. Krupadam R.J., Khan M.S., Das S. Adsorption of fluoride from water by surface-functionalized polyurethane foam. Water Sci. Technol. 2010, 62:759-765.
215. X. Dou, Y. Zhang, H. Wang, T. Wang, Y. Wang, Performance of granular zirconium-iron oxide in the removal of fluoride from drinking water, Water Res., in press, doi:10.1016/j.watres.2011.04.002.
216. http://www.hydroisotop.de/.
217. A. Goswami, M.K. Purkait, Kinetic and equilibrium study for the fluoride adsorption using pyrophyllite, Sep. Sci. Technol., in press, doi:10.1080/01496395.2011.572327.
218. Kaufhold S., Dohrmann R., Abidin Z., Henmi T., Matsue N., Eichinger L., Kaufhold A., Jahn R. Allophane compared with other sorbent minerals for the removal of fluoride from water with particular focus on a mineable Ecuadorian allophane. App. Clay Sci. 2010, 50:25-33.
219. Z. Zhang, Y. Tan, M. Zhong, Defluorination of wastewater by calcium chloride modified natural zeolite, Desalination, in press, doi:10.1016/j.desal.2011.03.057.
220. Y. Sun, Q. Fang, J. Dong, X. Cheng, J. Xu, Removal of fluoride from drinking water by natural stilbite zeolite modified with Fe(III), Desalination, in press, doi:10.1016/j.desal.2011.04.013.
221. M. Malakootian, A. Fatehizadeh, N. Yousefi, M. Ahmadian, M. Moosazadeh, Fluoride removal using Regenerated Spent Bleaching Earth (RSBE) from groundwater: Case study on Kuhbonan water, Desalination, in press, doi:10.1016/j.desal.2011.04.033.