@article{10.11648/j.ajac.20241205.12,
  author = {Agbaghare Daniel Enajeme},
  title = {Adsorption of Sodiumoleate on Barite in Aqueous Solution: A Kinetics and Thermodynamic Study
},
  journal = {American Journal of Applied Chemistry},
  volume = {12},
  number = {5},
  pages = {105-111},
  doi = {10.11648/j.ajac.20241205.12},
  url = {https://doi.org/10.11648/j.ajac.20241205.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20241205.12},
  abstract = {Concern has been raised about the necessity of separating barite from other minerals. When barite needs to be separated from other minerals, sodiumoleate, also known as napoleate, works well as an adsorbate. The purpose of this work is to examine the impact of temperature, pH, and contact duration on different Na-oleate adsorption methods onto barite. The change in the oleate concentration was used to determine the adsorption of sodium oleate on barite. In a batch adsorption experiment, sodium hydroxide and NaOH solution were combined with oleic acid in different flasks to create sodium oleate. To flasks containing Na-oleate, 1g of purified barite was added. A mechanical shaker was used to shake the specimen flasks and their contents for one hour. After stirring, the contents of each flask were given another 30 minutes to settle. Filter paper was used to filter the contents of the flask. Following filtering, the concentration of each filtrate was red-marked from the calibration graph by measuring the surface tension of each filtrate using a traveling microscope. The investigation's findings demonstrate that the first-order reaction kinetics are followed by the initial rate of Na-oleate adsorption onto barite. This study indicates that adsorption of Naoleate onto calcite increases at low pH values than higher pH. The amount of Na-oleate adsorbed onto calcite increases gradually as temperature increases from 303K to 313K. Beyond optimum temperature 322K, adsorption of Na-oleate on barite decreases rapidly. This study indicates optimum contact time of 80 min on adsorption process of Na-oleate onto calcite. Also this study indicates that adsorption of Na-oleate onto barite is pH dependent. Barite-oleate formation first increases with increasing Na-oleate concentration. At low pH 4, adsorption of Na-oleate onto barite increases, whereas adsorption decreases at high pH 9. Result also demonstrates that pseudo 2nd order offered an excellent fitting in the adsorption of oleate on barite, furthermore, the Langmuir adsorption isotherm favors the interaction between oleate ions and barite more than the Freundlich's isotherm, with the Langmiur isotherm's correlation coefficient (0.9728) being greater than the Freundlich's isotherm (0.9626). The trend of decreasing ∆GO negative values as temperature rises suggests that a higher temperature will more effectively promote oleate adsorption on barite.
},
 year = {2024}
}

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TY  - JOUR
T1  - Adsorption of Sodiumoleate on Barite in Aqueous Solution: A Kinetics and Thermodynamic Study

AU  - Agbaghare Daniel Enajeme
Y1  - 2024/10/31
PY  - 2024
N1  - https://doi.org/10.11648/j.ajac.20241205.12
DO  - 10.11648/j.ajac.20241205.12
T2  - American Journal of Applied Chemistry
JF  - American Journal of Applied Chemistry
JO  - American Journal of Applied Chemistry
SP  - 105
EP  - 111
PB  - Science Publishing Group
SN  - 2330-8745
UR  - https://doi.org/10.11648/j.ajac.20241205.12
AB  - Concern has been raised about the necessity of separating barite from other minerals. When barite needs to be separated from other minerals, sodiumoleate, also known as napoleate, works well as an adsorbate. The purpose of this work is to examine the impact of temperature, pH, and contact duration on different Na-oleate adsorption methods onto barite. The change in the oleate concentration was used to determine the adsorption of sodium oleate on barite. In a batch adsorption experiment, sodium hydroxide and NaOH solution were combined with oleic acid in different flasks to create sodium oleate. To flasks containing Na-oleate, 1g of purified barite was added. A mechanical shaker was used to shake the specimen flasks and their contents for one hour. After stirring, the contents of each flask were given another 30 minutes to settle. Filter paper was used to filter the contents of the flask. Following filtering, the concentration of each filtrate was red-marked from the calibration graph by measuring the surface tension of each filtrate using a traveling microscope. The investigation's findings demonstrate that the first-order reaction kinetics are followed by the initial rate of Na-oleate adsorption onto barite. This study indicates that adsorption of Naoleate onto calcite increases at low pH values than higher pH. The amount of Na-oleate adsorbed onto calcite increases gradually as temperature increases from 303K to 313K. Beyond optimum temperature 322K, adsorption of Na-oleate on barite decreases rapidly. This study indicates optimum contact time of 80 min on adsorption process of Na-oleate onto calcite. Also this study indicates that adsorption of Na-oleate onto barite is pH dependent. Barite-oleate formation first increases with increasing Na-oleate concentration. At low pH 4, adsorption of Na-oleate onto barite increases, whereas adsorption decreases at high pH 9. Result also demonstrates that pseudo 2nd order offered an excellent fitting in the adsorption of oleate on barite, furthermore, the Langmuir adsorption isotherm favors the interaction between oleate ions and barite more than the Freundlich's isotherm, with the Langmiur isotherm's correlation coefficient (0.9728) being greater than the Freundlich's isotherm (0.9626). The trend of decreasing ∆GO negative values as temperature rises suggests that a higher temperature will more effectively promote oleate adsorption on barite.

VL  - 12
IS  - 5
ER  - 

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