کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8045930 | 1519028 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Calcium adsorption on clays: Effects of mineralogy, pore fluid chemistry and temperature
ترجمه فارسی عنوان
جذب کلسیم روی خاکها: اثر کانی شناسی، شیمی درشت مایع و دما
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کلمات کلیدی
جذب کلسیم، کانی شناسی خاک رس، انحلال مواد معدنی، شیمی خاک، سطح شارژ، پتانسیل زتا،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
The present study describes the calcium adsorption behavior of clays exhibiting distinct mineralogical composition. The adsorption characteristics were determined using conventional batch-equilibrium sorption method, and different theoretical models were applied to describe the equilibrium sorption isotherms. The variation in calcium adsorption capacity was determined as a function of clay mineralogy, temperature and pore fluid chemistry. Further, the thermodynamic parameters were also calculated to describe the nature of adsorption mechanisms. Significant variation in calcium adsorption potential was observed among the clays, primarily attributed to their mineralogical diversities and related unique surface charge properties. The adsorption density escalated with rise in calcium concentration, temperature and pH of the adsorption system. These observations can be attributed to surface charge modifications and mineral dissolution properties of the clays, which in turn resulted in higher electro-negativity of the clay surface and thereby enhancing the affinity for calcium ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 160, August 2018, Pages 282-289
Journal: Applied Clay Science - Volume 160, August 2018, Pages 282-289
نویسندگان
Chinchu Cherian, Nikhil John Kollannur, Sandeep Bandipally, Dali Naidu Arnepalli,