کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
584820 | 877898 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal of ammonium ion from aqueous solution by natural Turkish (Yıldızeli) zeolite for environmental quality
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
The purposes of this study were to investigate the removal efficiency of ammonium (NH4+) ion from aqueous solution using the natural Turkish (Yıldızeli) zeolite and to characterize equilibrium isotherms. Experiments were carried out using batch method as a function of the solution pH, shaking time, dosage of adsorbent, and temperature. All these factors affected NH4+ ion removal from aqueous solution. Equilibrium modelling data were fitted to linear Langmuir and Freundlich models. Dubinin-Redushckevich (D-R) isotherm was applied to describe the nature of ion exchange of NH4+ and found that it occurred physically. Thermodynamics parameters such as change in free energy (ÎG°), enthalpy (ÎH°) and entropy (ÎS°) were also calculated. These parameters confirmed that ion exchange of NH4+ by the zeolite was feasible, spontaneous and exothermic in nature. Based on the results, it can be concluded that the natural Turkish (Yıldızeli) zeolite is suitable for the removal of NH4+ ions in wastewater treatments and agricultural purposes to in terms of sustainability of environmental quality.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 141, Issue 1, 6 March 2007, Pages 258-263
Journal: Journal of Hazardous Materials - Volume 141, Issue 1, 6 March 2007, Pages 258-263
نویسندگان
Kadir Saltalı, Ahmet Sarı, Mehmet Aydın,