Preparation of an Iron Oxide Modified Montmorillonite for Removal of Arsenic in Waters

Hai Fei Liu; De Ren Miao; Fei Liu

doi:10.4028/www.scientific.net/AMR.156-157.849

Paper Titles

Numerical Study on Transient Heat Transfer in a Regenerative Oxidation Bed during the Preheating Process
p.829

Research on Window Patterns' Layouts and its Expanded Application in Exploitation of Textile
p.834

Research of the Main Influence Factors of Fly Ash Thermal Insulation Material
p.839

Studies on the Preparation and the Process Optimization of PANI Composited Conductive Fabric
p.844

Preparation of an Iron Oxide Modified Montmorillonite for Removal of Arsenic in Waters
p.849

Using Symplectic Schemes for Nonlinear Dynamic Analysis of Flexible Beams Undergoing Overall Motions
p.854

Research for Fabric Regional Expansion Arranged by Tight and Loose Weaves
p.862

Research on the Revision and Application of the Paper Surface Efficiency Formula
p.868

Effect of Catalytic Distribution on the Performance of Microreactor for Hydrogen Production through Methane Steam Reforming
p.873

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 156-157Preparation of an Iron Oxide Modified...

Preparation of an Iron Oxide Modified Montmorillonite for Removal of Arsenic in Waters

Abstract:

Most concerns have focused on the arsenic (As) contamination in wastewater. Montmorillonite (MMT) has been proved to be a good adsorbent for removal heavy metals existing as cation in ground water while it is invalid for anions. However, arsenic usually exists as anions in aqueous. Accordingly, suitable modifications on MMT need to be done before using. This paper presents the results that a kind of commercial MMT has been modified by iron oxides under normal and inverse titration conditions. The x-ray diffraction (XRD), Thermal Gravimetry Analysis and Differential Thermal Analysis (TGA-DTA) and SBET analysis have been employed to elucidate the modification mechanisms. Modification characteristic analysis illustrated that the iron oxide associated with MMT by coated style as polymerization of hydroxyl-Fe (Fe (OH) 3) under inverse titration condition. Under normal titration condition, on the other hand, the iron oxide associated with MMT predominant by intercalation as goethite (FeOOH). The arsenic removal efficiencies of different modified products for polluted water have also been verified by batch experiments. Results proved that Iron oxide modified MMT on the removal efficiency of arsenic significantly increased and the normal titration is better than inverse titration as indicated by the arsenic removal ratios under the same experimental conditions. Based on these results, the iron oxide modified MMT by normal titration procedure is a promising material for removal arsenic in wastewaters.

You might also be interested in these eBooks

Advanced Manufacturing Technology, ICAMMP 2010

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 156-157)

Pages:

849-853

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.156-157.849

Citation:

Cite this paper

Online since:

October 2010

Authors:

Hai Fei Liu, De Ren Miao, Fei Liu

Keywords:

Arsenic, Coating, Intercalation, Iron Oxide, Montmorillonite

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] S. Kundu and A.K. Gupta: J. Colloid Interface Sci . Vol. 290 (2005), pp.52-60.

Google Scholar

[2] J.J. Chen, B.Q. Jiang and W. Wang: Jiangxi Chemical Engineering Vol. 2 (2004), pp.1-4. In chinese.

Google Scholar

[3] S.K. Maji, A. Pal and T. Palk: J. Hazard. Mater. Vol. 151 (2008), pp.811-820.

Google Scholar

[4] D. Mohapatra, D.D. Mishra and K.H. Park: J. Environ. Sci. Vol. 20 (2008), pp.683-689.

Google Scholar

[5] P. Chutia, S. Kato, T. Kojima and S. Satokawa: J. Hazard. Mater. Vol. 162 (2009), pp.440-447.

Google Scholar

[6] J. Matschullat: Sci. Total Environ. Vol. 249 (2000), pp.297-312.

Google Scholar

[7] P.L. Smedley and D.G. Kinniburgh: Appl. Geochem. Vol. 17 (2002), pp.517-568.

Google Scholar

[8] I.A. Katsoyiannis and A.I. Zouboulis: Water Res. Vol. 38 (2004), pp.17-26.

Google Scholar

[9] M.M. Benjamin, R.S. Slatten, R.P. Bailey and T. Bennett: Water Res. Vol. 30 (1996), pp.2609-2620.

Google Scholar

[10] B.K. Biswas, J.I. Inoue, K. Inoue, K.N. Ghimire, et al: J. Hazard. Mater. Vol. 154 (2008), pp.1066-1074.

Google Scholar

[11] S. Lin and R. Juang: J. Hazard. Mater. Vol. 92 (2002), pp.315-326.

Google Scholar

[12] E. Eren, B. Afsin and Y. Onal: J. Hazard. Mater. Vol. 161 (2009), pp.677-685.

Google Scholar

[13] S. Korichi, A. Elias and A. Mefti: Appl. Clay Sci. Vol. 42 (2009), pp.428-432.

Google Scholar