NDLI: Acid Black 172 dye adsorption from aqueous solution by hydroxyapatite as low-cost adsorbent

Content Provider	Springer Nature Link
Author	Ciobanu, Gabriela Harja, Maria Rusu, Lacramioara Mocanu, Anca Mihaela Luca, Constantin
Copyright Year	2014
Abstract	The Acid Black 172 dye adsorption on the uncalcined hydroxyapatite nanopowder was investigated. The hydroxyapatite prepared by wet coprecipitation method has high specific surface area of 325 m$^{2}$/g and crystal sizes smaller than 70 nm. The batch adsorption experiments revealed that under the optimum adsorption conditions (pH 3, hydroxyapatite dosage 2 g/L, initial dye concentration 400 mg/L and temperature 20 °C) the dye removal efficiency was 95.78% after 1 h of adsorption. The adsorption kinetics was best described by the pseudo-second order kinetic model. The intraparticle diffusion model shows that intraparticle diffusion is not the sole rate-limiting step; the mass transfer also influences the adsorption process in its initial period. The Langmuir isotherm model best represented the equilibrium experimental data, and the maximum adsorption capacity (q$_{ m }$) was 312.5 mg/g.
Starting Page	1021
Ending Page	1027
Page Count	7
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	31
Issue Number	6
e-ISSN	19757220
Language	English
Publisher	Springer US
Publisher Date	2014-03-25
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydroxyapatite Acid Black 172 Dye Adsorption Isotherms Kinetics Industrial Chemistry/Chemical Engineering Catalysis Materials Science Biotechnology
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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