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:: Volume 1, Issue 2 (3-2014) ::
jehe 2014, 1(2): 146-156 Back to browse issues page
Arsenic (V) Removal from Aqueous Solution by Produced Iron and Detect Isoterms and Kinetic Adsorption
Roghaye Nourozi * , Saeed Azizian
Department of Environmental Health Engineering, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran
Abstract:   (4375 Views)

Background: Zero-valent iron can control the sites contaminated Arsenic (V) used. The aim of this research is Arsenic (V) removal from aqueous solutions using of iron powder and detect isoterms and kinetic adsorption.

Methods: The experiment in batch system with change effective parameters such as pH, initial concentration of Arsenate, iron powder dosage and equilibration time was evaluated. In this work, the obtained data then analyzed by Langmuir and Freundlich isotherm models. Kinetic data with pseudo- first order, pseudo- second order and modified pseudo- first order models were fitted.

Results: The results showed that pH of the solution plays an important role in control of the surface charge of the adsorbent. The higher removal efficiency was observed for Arsenate in acidic environment (pH=3). The Arsenate removal efficiency by increasing adsorbent dosage and decreasing initial concentration of Arsenate increased. Absorption of Arsenate ions onto adsorbent is associated with Langmuir model (r2=0.99) . The kinetics of Arsenic absorption with the model pseudo-second order (r2 =0.99) better described.

Conclusion: The results showed the iron powder is an effective, quick and cheap method for removal of Arsenic (V) from aqueous solution.

Keywords: Arsenic (V), iron powder, aqueous solution
Full-Text [PDF 440 kb]   (1224 Downloads)    
Type of Study: Research | Subject: General
Received: 2015/01/15 | Accepted: 2015/01/15 | Published: 2015/01/15
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Nourozi R, Azizian S. Arsenic (V) Removal from Aqueous Solution by Produced Iron and Detect Isoterms and Kinetic Adsorption. jehe 2014; 1 (2) :146-156
URL: http://jehe.abzums.ac.ir/article-1-38-en.html


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Volume 1, Issue 2 (3-2014) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
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