کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
816492 | 906448 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Treatment of wastewater contaminated with cobalt using Saudi activated bentonite
ترجمه فارسی عنوان
درمان فاضلاب آلوده به کبالت با استفاده از بنتونیت فعال عربستان
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کلمات کلیدی
حذف کبالت، بنتونیت سعودی، جذب کبالت، حذف فلزات سنگین، ایزوترم جذب،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
In this study, removal of cobalt from wastewater using Saudi activated clay (bentonite) was investigated. The removal characteristics were investigated under various operating variables such as contact time, solution pH, clay dosage and initial metal concentration. It was found that adsorption of cobalt ions on Saudi activated bentonite was relatively fast and the equilibrium was reached after 30Â min. Adsorption was also dependent on solution pH where cobalt removal percentage gradually increased with increasing solution pH up to 99% at pH 8. Moreover, about 100% cobalt removal was observed when solution pH was increased to more than 8. The results showed that increasing the initial cobalt concentration decreased cobalt removal percentage due to saturation of clay with cobalt ions. The adsorption isotherm data were well fitted with both the linearized Langmuir and Freundlich models. Furthermore, the value of the mean free energy determined with the D-R equation showed that adsorption process is chemisorptions. Cobalt adsorption into Saudi activated bentonite was well represented by the pseudo-second-order kinetic model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Alexandria Engineering Journal - Volume 53, Issue 1, March 2014, Pages 205-211
Journal: Alexandria Engineering Journal - Volume 53, Issue 1, March 2014, Pages 205-211
نویسندگان
S.S. Al-Shahrani,