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One-, Two-, and Three-Parameter Isotherms, Kinetics, and Thermodynamic Evaluation of Co(II) Removal from Aqueous Solution Using Dead Neem Leaves
المؤلفون المشاركون
Tsamo, Cornelius
Paltahe, Abba
Fotio, Daniel
Vincent, Tore Atangana
Sales, Wassansa Francois
المصدر
International Journal of Chemical Engineering
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-14، 14ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-11-27
دولة النشر
مصر
عدد الصفحات
14
الملخص EN
Water pollution by heavy metals like Co(II) is particularly of concern because of their persistence in the environment, toxicity, and ability to bioaccumulate in organisms.
In this study, the influence of contact time at three initial concentration, pH, adsorbent dose, temperature, and kinetics, thermodynamics, and one-, two-, and three-parameter isotherm modeling of the adsorption of Co(II) on neem leaves (DNL) was investigated.
The adsorbent was characterized using FTIR, TGA-DSC, EDX, and nitrogen adsorption-desorption.
DNL is composed of many Co(II) surface-binding groups and a BET surface area of 0.2783 m2/g dominated by meso- and macropores.
Equilibrium was attained in 10 minutes for the three concentrations with a removal efficiency of 85–97%.
∆G° of −5.424 to −6.068 KJ/mol at 25 to 60°C, respectively, indicated spontaneous adsorption with increasing temperature.
D-R adsorption energies of 0.649 to 2.433 KJ/mol revealed physical adsorption.
Maximum adsorption capacity of 9.201–523.900 mg/g was obtained by Freundlich and Jovanovic isotherms.
Adsorption was very favourable as evident by the high Kiselev equilibrium constant (11.652–172.78 L/mg) and very low RL values of 0.001–0.026.
Adsorption occurred by repulsive mechanism as indicated by Fowler–Guggenheim and Hill–de Boer negative interaction energies (−16.182 to −90.163 and −111.102 to −3328.86 KJmol−1, respectively), confirming maximum Co(II) adsorption at pH 3.
Results can be used in the design of an efficient adsorption system using neem leaves which is very efficient in removing low and high levels of heavy metals like cobalt ions from wastewater.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Tsamo, Cornelius& Paltahe, Abba& Fotio, Daniel& Vincent, Tore Atangana& Sales, Wassansa Francois. 2019. One-, Two-, and Three-Parameter Isotherms, Kinetics, and Thermodynamic Evaluation of Co(II) Removal from Aqueous Solution Using Dead Neem Leaves. International Journal of Chemical Engineering،Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1158717
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Tsamo, Cornelius…[et al.]. One-, Two-, and Three-Parameter Isotherms, Kinetics, and Thermodynamic Evaluation of Co(II) Removal from Aqueous Solution Using Dead Neem Leaves. International Journal of Chemical Engineering No. 2019 (2019), pp.1-14.
https://search.emarefa.net/detail/BIM-1158717
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Tsamo, Cornelius& Paltahe, Abba& Fotio, Daniel& Vincent, Tore Atangana& Sales, Wassansa Francois. One-, Two-, and Three-Parameter Isotherms, Kinetics, and Thermodynamic Evaluation of Co(II) Removal from Aqueous Solution Using Dead Neem Leaves. International Journal of Chemical Engineering. 2019. Vol. 2019, no. 2019, pp.1-14.
https://search.emarefa.net/detail/BIM-1158717
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1158717
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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