کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10610567 | 985985 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improved activated carbon by thermal treatment in methane and steam: Physicochemical influences on MIB sorption capacity
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
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![عکس صفحه اول مقاله: Improved activated carbon by thermal treatment in methane and steam: Physicochemical influences on MIB sorption capacity Improved activated carbon by thermal treatment in methane and steam: Physicochemical influences on MIB sorption capacity](/preview/png/10610567.png)
چکیده انگلیسی
Thermal treatment by steam or by methane plus steam altered the physicochemical properties of a commercial lignite-based activated carbon; and improved the carbon's sorption capacity for the odorant 2-methylisoborneol (MIB). Rapid small scale column tests (RSSCTs) revealed that favorable thermal treatment allowed an activated carbon to remove this odorant for up to six times longer before initial MIB breakthrough than did its commercial lignite counterpart. For these RSSCTs (135 ppt), clarified water from a water treatment plant (2.07 mg/L TOC) was spiked with 14C-MIB; and liquid scintillation protocols facilitated 14C-MIB detection at 1-3 ppt. The more favorable thermal treatment at 1000 °C increased pore volumes with 5-400 Ã
widths by twofold; and the bed volume to initial MIB breakthrough correlated fairly well (R2Â =Â 0.9) with pore volume in the range of 5-60 or 5-400Â Ã
. Thermal tailoring altered the carbon's apparent point of zero charge: from pHÂ 6.5 for the commercial lignite carbon, to pHÂ 9.2 for tailored carbon. When methane and steam were used together, the C, H, N and O contents were virtually the same as for the commercial lignite. In contrast, when steam was employed alone, the percent of oxygen increased, and the percent of H, C and N therefore decreased slightly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 43, Issue 3, 2005, Pages 467-479
Journal: Carbon - Volume 43, Issue 3, 2005, Pages 467-479
نویسندگان
J.R. Rangel-Mendez, F.S. Cannon,