Optimization of Pb(II) ions adsorption on nanohydroxyapatite adsorbents by applying Taguchi method.
J Hazard Mater
; 349: 186-194, 2018 05 05.
Article
en En
| MEDLINE
| ID: mdl-29427969
ABSTRACT
This paper presents an optimization approach for the removal of lead ions (Pb+2) by nano-hydroxyapatite powder form adsorbents that were produced from bovine bone by mechanical activation method. The Taguchi method was implemented for designing the experiments by considering four controllable factors including (1) ball milling time (A), (2) the initial concentration of lead ions (B), (3) initial pH of the solution (C); and (4) the adsorbent dosage (D), each factor at four different levels. According to the ANOVA analysis results, the removal efficiency of the lead ions was predominantly influenced by the adsorbent dosage (38.2%) and the initial lead ions concentration (23.64%), whereas the effect of initial pH of the solution was ignorable and the ball milling time had a mild contribution of 14.79%. The total optimum adsorptive lead ions removal of 100% was achieved by optimization process at operating conditions of Coâ¯=â¯180â¯mgâ¯L- 1, ball milling timeâ¯=â¯2â¯h, pHâ¯=â¯3, and adsorbent dosageâ¯=â¯0.15â¯g. The Langmuir isotherm model fitted to the equilibrium results with good accuracy and a maximum sorption capacity of 200â¯mgâ¯g-1 was predicted by the model for the hydroxyapatite adsorbent ball milled for 2â¯h.
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Bases de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
J Hazard Mater
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2018
Tipo del documento:
Article