کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6359204 1622747 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the pore structure and surface chemical properties of activated carbon on the adsorption of mercury from aqueous solutions
ترجمه فارسی عنوان
تأثیر ساختار منافذ و خواص شیمیایی سطح کربن فعال بر جذب جیوه از محلول های آبی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی
Reactivation and chemical modification were used to obtain modified activated carbons with different pore structure and surface chemical properties. The samples were characterized by nitrogen absorption-desorption, Fourier transform infrared spectroscopy and the Bothem method. Using mercury chloride as the target pollutant, the Hg2+ adsorption ability of samples was investigated. The results show that the Hg2+ adsorption capacity of samples increased significantly with increases in micropores and acidic functional groups and that the adsorption process was exothermic. Different models and thermodynamic parameters were evaluated to establish the mechanisms. It was concluded that the adsorption occurred through a monolayer mechanism by a two-speed process involving both rapid adsorption and slow adsorption. The adsorption rate was determined by chemical reaction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 78, Issues 1–2, 15 January 2014, Pages 69-76
نویسندگان
, , , , ,