Adsorption of Chlorendic Acid onto Hydrophilic Fumed Titanium Dioxide (P25)
American Journal of Environmental Protection
Volume 2, Issue 6, December 2013, Pages: 183-187
Received: Nov. 11, 2013; Published: Dec. 20, 2013
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Author
Ndokiari Boisa, Dept. of Chemistry, Faculty of Science, Rivers State University of Science and Technology, P.M.B. 5080, Port Harcourt, Nigeria
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Abstract
The adsorption behavior of chlorendic acid (1, 4, 5, 6, 7, 7-hexachlorobicyclo-(2, 2, 1) -hept-5-ene-2, 3-dicarboxylic acid) onto hydrophilic fumed TiO2 (P-25, Degussa) in aqueous suspension was investigated. Results indicate that chlorendic acid adsorbed strongly in short times (2-5 mins) onto TiO2. Adsorption data is consistent with Langmuir-Hinshelwood isotherm model for monolayer adsorption and the shape of the isotherm indicates second order behavior. Calculated adsorption constant K, and maximum adsorbable quantity at 20oC were obtained as (0.12 ± 0.03) l/mg and (4.4 ± 0.2) mg/g TiO2 respectively. Adsorption of chlorendic acid in water onto TiO2 is exothermic.
Keywords
Adsorption, Reactive Flame Retardant, Titanium Dioxide
To cite this article
Ndokiari Boisa, Adsorption of Chlorendic Acid onto Hydrophilic Fumed Titanium Dioxide (P25), American Journal of Environmental Protection. Vol. 2, No. 6, 2013, pp. 183-187. doi: 10.11648/j.ajep.20130206.20
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