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Title: Studies on sorption and elution behaviour of dyes using titanium phosphonate
Authors: Maheria, Kalpana
Chudasama, Uma
Keywords: Dyes
Hybrid ion exchanger
Metal (IV) phosphonate
Tetravalent metal acid salt
Titanium-hydroxyethylidene diphosphonate
Waste water treatment
Issue Date: Dec-2007
Publisher: CSIR
Abstract: Titanium-hydroxyethylidene diphosphonate (TiHEDP), a novel hybrid ion exchange material of the class of tetravalent metal acid (tma) salt, has been synthesized by sol-gel method and characterized by elemental analysis (ICP-AES), thermal analysis (TG / DTA and DSC), FT-IR and X-ray diffraction studies. Chemical resistivity of the material in acids, bases and organic solvents has been assessed. Sorption behaviour of dyes, crystal violet (CV), rhodamine 6G (R6G), methylene blue (MB) and pink FG (PFG) towards TiHEDP has been studied, based on thermodynamic parameters evaluated and adsorption isotherms (Langmuir and Fruendlich). Breakthrough capacity and elution behaviour of dyes have also been studied. Sorption affinity of dyes towards TiHEDP is found to be MB>CV>R6G>PFG.
Page(s): 1047-1053
ISSN: 0022-4456
Source:JSIR Vol.66(12) [December 2007]

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