Estimation of thermodynamic isotherms for MN adsorption in some calcareous soils at Sulaimani governorate
Other Title(s)
تقدير طاقة الحراري لامتزاز المنغنيز في بعض التربة الكلسية في محافظة السليمانية
Joint Authors
Abd Allah, Sulah Muhammad Shaykh
Karim, Kamal Hama
Ali, Siran Majid Muhammad
Faraj, Dalsuz Hama Talib
Source
The Iraqi Journal of Agricultural Science
Issue
Vol. 50, Issue 4 (31 Aug. 2019), pp.1046-1055, 10 p.
Publisher
University of Baghdad College of Agriculture
Publication Date
2019-08-31
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Earth Sciences, Water and Environment
Agriculture
Topics
Abstract EN
This study was conducted to determine the description of Mn adsorption phenomena through adsorption isotherms in some calcareous soils at Sulaimani governorate.
Soil samples were taken at 0- 30 cm depth from five different agricultural locations.
Duplicate 1 gm of soil samples were equilibrated at 298 and 318°K with 50 ml of 0.01M CaCl2 containing (0, 2.5, 5, 10, 20, and 40) mg Mn L-1 as (MnSO4.
H2O).
The concentration of Mn determined in solution by using ICP-OES.
The amount of Mn adsorbed by each soil samples was calculated.
The thermodynamic parameters ΔH°, ΔG°, ΔS° were determined using adsorption data and concentration of Mn in equilibrium solution at two different temperatures.
The results indicated that the Freundlich equation is the best model to describe Mn adsorption in studied soils due to the result the higher (R2), with lower (RMSE) and (AIC).
The results of (ΔH°) indicated that the Mn adsorption processes in the Sharazor, Qaradagh and Mawat soils were exothermic reactions.
While, the Mn adsorption processes in both Bazian and Surdash locations were endothermic reactions.
The (ΔS°) values of these soils were as follows: Surdash > Bazian> Sharazor > Qaradagh > Mawat.
The results of (ΔG°) indicated that the reaction in all studied soil locations at temperature 298 °K is spontaneous, also the reaction stay spontaneous with increase temperature to 318°K only in both Bazian and Surdash locations.
American Psychological Association (APA)
Abd Allah, Sulah Muhammad Shaykh& Karim, Kamal Hama& Ali, Siran Majid Muhammad& Faraj, Dalsuz Hama Talib. 2019. Estimation of thermodynamic isotherms for MN adsorption in some calcareous soils at Sulaimani governorate. The Iraqi Journal of Agricultural Science،Vol. 50, no. 4, pp.1046-1055.
https://search.emarefa.net/detail/BIM-903683
Modern Language Association (MLA)
Abd Allah, Sulah Muhammad Shaykh…[et al.]. Estimation of thermodynamic isotherms for MN adsorption in some calcareous soils at Sulaimani governorate. The Iraqi Journal of Agricultural Science Vol. 50, no. 4 (2019), pp.1046-1055.
https://search.emarefa.net/detail/BIM-903683
American Medical Association (AMA)
Abd Allah, Sulah Muhammad Shaykh& Karim, Kamal Hama& Ali, Siran Majid Muhammad& Faraj, Dalsuz Hama Talib. Estimation of thermodynamic isotherms for MN adsorption in some calcareous soils at Sulaimani governorate. The Iraqi Journal of Agricultural Science. 2019. Vol. 50, no. 4, pp.1046-1055.
https://search.emarefa.net/detail/BIM-903683
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-903683