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000172073 1001_ $$0P:(DE-HGF)0$$aFuentes, Bárbara$$b0$$eCorresponding Author
000172073 245__ $$aSorption of inositol hexaphosphate on desert soils
000172073 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2014
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000172073 520__ $$aSorption of inositol hexaphosphate (IP6) on desert soils was studied to evaluate their use as a novel low-cost sorbent material for organic P removal in water treatment. The kinetics of IP6 sorption, pH effects, and sorption isotherms were examined in batch experiments on four desert saline–sodic soils: Antofagasta (AN), Mejillones (ME), Aguas Blancas I (ABI), and Aguas Blancas II (ABII). The sorption kinetics of inositol hexaphosphate expressed as P (P-IP6) on these soils were described by the Elovich equation and the initial sorption velocities ranked in the order: ABII > ABI > ME > AN. In addition, P-IP6 sorption capacity in AN, ME, and ABI was strongly influenced by the solution pH, but in ABII it was not pH-dependent. Whereas the experimental data of P-IP6 sorption on ME, ABI, and ABII were better fitted by the Langmuir equation (implying a homogenous distribution of active sorption sites), for AN the best fit was obtained with the Freundlich model (implying heterogeneous, multi-layered sorption surfaces). The maximum P-IP6 sorption capacities ranked: ABII > ME > AN > ABI. Based on the results of our study, ABII soil is recommended for P-IP6 removal. In this soil, P-IP6 sorption did not depend on solution pH, and the precipitation and sorption of IP6 were associated with Ca2 +, Mg2 +, and minerals such as montmorillonite and vermiculite.
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000172073 7001_ $$0P:(DE-HGF)0$$aMora, María de la Luz$$b1
000172073 7001_ $$0P:(DE-Juel1)145865$$aBol, Roland$$b2$$ufzj
000172073 7001_ $$0P:(DE-HGF)0$$aSan Martin, Francisca$$b3
000172073 7001_ $$0P:(DE-HGF)0$$aPérez, Elizabeth$$b4
000172073 7001_ $$0P:(DE-HGF)0$$aCartes, Paula$$b5
000172073 773__ $$0PERI:(DE-600)2001729-7$$a10.1016/j.geoderma.2014.06.016$$gVol. 232-234, p. 573 - 580$$p573 - 580$$tGeoderma$$v232-234$$x0016-7061$$y2014
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