Study of the Equilibrium, Kinetics, and Thermodynamics of Boron Removal from Waters with Commercial Magnesium Oxide
المؤلفون المشاركون
Montalvo Andia, Javier Paul
Yokoyama, Lidia
Cesar Teixeira, Luiz Alberto
المصدر
International Journal of Chemical Engineering
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-10، 10ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-06-11
دولة النشر
مصر
عدد الصفحات
10
الملخص EN
In the present work, the equilibrium, thermodynamics, and kinetics of boron removal from aqueous solutions by the adsorption on commercial magnesium oxide powder were studied in a batch reactor.
The adsorption efficiency of boron removal increases with temperature from 25°C to 50°C.
The experimental results were fitted to the Langmuir, Freundlich, and Dubinin–Radushkevich (DR) adsorption isotherm models.
The Freundlich model provided the best fitting, and the maximum monolayer adsorption capacity of MgO was 36.11 mg·g−1.
In addition, experimental kinetic data interpretations were attempted for the pseudo-first-order kinetic model and pseudo-second-order kinetic model.
The results show that the pseudo-second-order kinetic model provides the best fit.
Such result suggests that the adsorption process seems to occur in two stages due to the two straight slopes obtained through the application of the pseudo-first-order kinetic model, which is confirmed by the adjustment of the results to the pseudo-second-order model.
The calculated activation energy (Ea) was 45.5 kJ·mol−1, and the values calculated for ∆G°, ∆H°, and ∆S° were −4.16 kJ·mol−1, 21.7 kJ·mol−1, and 87.3 kJ·mol−1, respectively.
These values confirm the spontaneous and endothermic nature of the adsorption process and indicated that the disorder increased at the solid-liquid interface.
The results indicate that the controlling step of boron adsorption process on MgO is of a physical nature.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Montalvo Andia, Javier Paul& Yokoyama, Lidia& Cesar Teixeira, Luiz Alberto. 2018. Study of the Equilibrium, Kinetics, and Thermodynamics of Boron Removal from Waters with Commercial Magnesium Oxide. International Journal of Chemical Engineering،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1170201
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Montalvo Andia, Javier Paul…[et al.]. Study of the Equilibrium, Kinetics, and Thermodynamics of Boron Removal from Waters with Commercial Magnesium Oxide. International Journal of Chemical Engineering No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1170201
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Montalvo Andia, Javier Paul& Yokoyama, Lidia& Cesar Teixeira, Luiz Alberto. Study of the Equilibrium, Kinetics, and Thermodynamics of Boron Removal from Waters with Commercial Magnesium Oxide. International Journal of Chemical Engineering. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1170201
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1170201
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر