کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221556 464260 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Removal of As(V) from aqueous solution by Ce-Fe bimetal mixed oxide
ترجمه فارسی عنوان
حذف (As (V از محلول آبی توسط Ce-آهن دو فلزی اکسید مخلوط
کلمات کلیدی
CE-آهن دو فلزی اکسید مخلوط؛ Solvothermal؛ جذب؛ باززایی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Ce-Fe bimetal mixed oxide was synthesized and used for As(V) removal.
• Maximum As(V) removal at 96% was observed for this adsorbent at pH 3.
• Competition between arsenic and co-existing anion was investigated.
• Adsorption mechanism for As(V) removal by Ce-Fe bimetal mixed oxide was proposed.

The objective of the present research is to investigate the removal efficiency of As(V) from synthetic arsenic solution by Ce-Fe bimetal mixed oxide. The Ce-Fe bimetal mixed oxide is synthesized by solvothermal process and is characterized by using SEM, EDX, XRD, FTIR and BET. The analysis of SEM and BET analyser data of the material shows that particles are in the range of 290–300 nm, average pore size and surface area of the material is 4.42 nm and 127 m2/g respectively. Adsorption data are best fitted with the Langmuir isotherm with R2 value of 0.9965. The maximum adsorption capacity is 32.12 mg/g at pH 3. Kinetics data revealed that the overall adsorption process followed pseudo-second-order kinetics. In the optimum conditions removal of As(V) using Ce-Fe bimetal mixed oxide is found to be 96%. The adsorption mechanism shows that the As(V) adsorption on the Ce-Fe bimetal mixed oxide is a complex mechanism including electrostatic attraction and the replacement of OH to form monodentate and bidentate complexes. The loaded adsorbent materials can be regenerated by using 0.5 M NaOH solution.

Adsorption of As(V) on Ce-Fe bimetal mixed oxide surface.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Chemical Engineering - Volume 4, Issue 3, September 2016, Pages 2892–2899
نویسندگان
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