MERCURY ADSORPTION ON A CARBON SORBENT DERIVED FROM WALNUT SHELL
Publish place: 12th National Iranian Chemical Engineering Congress
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NICEC12_744
تاریخ نمایه سازی: 30 شهریور 1387
Abstract:
A carbonaceous sorbent derived from an Iranian walnut shell (WS) were prepared by chemical activation method using ZnCl2 as an activating reagent. WS may be used in water treatment to remove mercury (Hg++) from water. The adsorption of mercury ion (Hg++) were performed from aqueous solutions at 302 K. Adsorption studies of Hg (II) were carried out by varying several conditions such as: treatment time, metal ion concentration, adsorbent amount, pH and solution temperature. It was also determined that Hg (II) adsorption follows both Langmuir and Freundlich isotherms. It was shown that Hg (II) uptake decreases with increasing pH of the solution. The monolayer sorption capacity was obtained as 151.5 mg/g.
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Authors
M. Zabihi
Department of Chemical Engineering, Semnan University, Semnan
A Ahmadpour
Department of Chemical Engineering, Ferdowsi University of Mashad, Mashad
A Haghighi Asl
Department of Chemical Engineering, Semnan University, Semnan
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