کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4909929 | 1427555 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal of Ni2+ ion from waste water by Geopolymeric Adsorbent derived from LD Slag
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In the present study LD slag geopolymer (LDSGP) was synthesised from calcium oxide rich raw LD slag, a waste of steel making industries for the use as a potential low cost adsorbent for high removal of Ni2+ ions from aqueous solution. The geopolymerisation of LD slag was performed in a plastic mould where the colloid mixture of raw LD slag and alkaine activator (sodium hydroxide and sodium sillicate (1:1Â w/w)) were cured for 3Â days at room temperature. The LDSGP was characterized by using XRF technique, BET surface area, SEM & TEM images, XRD patterns, FTIR spctra and TGA. Batch experiments for the adsorption study of Ni2+ ions were conducted at different temperatures (298Â K, 308Â K, 318Â K). The equlibrium data was successfully fitted the Langmuir isotherm and the maximum adsorption uptake of Ni2+, onto LDSGP, was found to be 85.29Â mg/g and at 318Â K. The adsorption rate data was fitted well to pseudo-second-order model indicating the process to be dominated by chemisorption. Thermodynamic analysis proved that the adsorption process was spontaneous in nature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Water Process Engineering - Volume 17, June 2017, Pages 237-244
Journal: Journal of Water Process Engineering - Volume 17, June 2017, Pages 237-244
نویسندگان
Chayan Sarkar, Jayanta Kumar Basu, Amar Nath Samanta,