%0 Journal Article
%T Application of Langmuir and Freundlich Models in Phosphate Sorption Studies in Soil of Contrasting Parent Materials in South-Eastern Nigeria
%A Florence Otobong Umoh
%A Victor Emmanuel Osodeke
%A Ini Dennis Edem
%A Gregory Sunday Effiong
%J Open Access Library Journal
%V 1
%N 7
%P 1-9
%@ 2333-9721
%D 2014
%I Open Access Library
%R 10.4236/oalib.1100989
%X This study was conducted to determine phosphorus
sorption characteristics of five soils from contrasting parent materials in south-eastern
Nigeria. The soils were collected from Ikom (basalt), Akamkpa (basement complex),
Bende (shale), Amaeke (sand stone) and Umudike (coastal plain sand). The
standard P requirements for the soils were calibrated from the sorption curves,
and the values were very low ranging from 11.1 mg”¤kg<sup>©1</sup> in
Bende to 60.2 mg”¤kg<sup>©1</sup> in Ikom. The P maximum
sorption capacity determined by the Freundlich and Langmuir models varied with
the locations, and ranged from 65.7 mg”¤kg<sup>©1</sup> in Akamkpa to 516 mg”¤kg<sup>©1</sup> in
Bende for the Freundlich model and from 231 mg”¤kg<sup>©1</sup> in
Akamkpa to 369 mg”¤kg<sup>©1</sup> in Bende for the Langmuir
model. Similarly the P maximum buffering capacity was determined by using the
two models. The values varied from 993 mg”¤kg<sup>©1</sup> in
Amaeke to 1180 mg”¤kg<sup>©1</sup> in Akamkpa with a mean of 1087
mg”¤kg<sup>©1</sup>. The
highest bonding energy of P was in Akamkpa with a mean value of 6.05 ml/g and
lowest was in Bende with a mean value of 0.76 ml/g. From this study, the P
sorption data of the soils conformed better with the Freundlich model than the
Langmuir model. Freundlich model is therefore recommended for the soils.
%K Phosphate
%K Freundlich
%K Langmuir
%K Models
%K Parent Material
%K Sorption Isotherm
%U http://www.oalib.com/paper/3124996