Arsenic and fluoride removal from contaminated drinking water with Haix-Fe-Zr and Haix-Zr resin beads

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:215

Article

Phillips, Debra H.¹  Sen Gupta, Bhaskar²  Mukhopadhyay, Soumyadeep³  Sen Gupta, Arup K.⁴ 

[1] Queens Univ Belfast, Sch Nat & Built Environm, Belfast, Antrim, North Ireland

[2] Heriot Watt Univ, Sch Energy Geosci Infrastruct & Soc, Water Acad, Edinburgh, Midlothian, Scotland

[3] Sci Event Ltd, 31 Cannon St,Seton Pk, Winchburgh, Broxburn, Scotland

[4] Lehigh Univ, Dept Civil & Environm Engn, Bethlehem, PA 18015 USA

关键词: Arsenic contaminated drinking water;    Fluoride contaminated drinking water;    Haix-Zr resin beads;    Haix-Fe-Zr resin beads;    Adsorption;    Drinking water treatment;   

DOI  :  10.1016/j.jenvman.2018.03.018

来源: Elsevier

【 摘 要 】

The objective of the study was to carry-out batch tests to examine the effectiveness of Haix-Fe-Zr and Haix-Zr resin beads in the removal of As(III), As(V) and F- from groundwater with a similar geochemistry to a site where a community-based drinking water plant has been installed in West Bengal, India. The groundwater was spiked separately with similar to 200 mu g/L As(III) and As(V) and 5 mg/L F-. Haix-Zr resin beads were more effective than Haix-Fe-Zr resin beads in removing As(III) and As(V). Haix-Zr resin beads showed higher removal of As(V) compared to As(III). Haix-Zr resin beads removed As(V) below the WHO (10 mu g/L) drinking water standards at 8.79 mu g/L after 4 h of shaking, while As(III) was reduced to 7.72 mu g/L after 8 h of shaking. Haix-Fe-Zr resin beads were more effective in removing F- from the spiked groundwater compared to Haix-Zr resin beads. Concentrations of F- decreased from 6.27 mg/L to 1.26 mg/L, which is below the WHO drinking water standards (1.5 mg/L) for F-, after 15 min of shaking with Haix-Fe-Zr resin beads. After 20 min of shaking in groundwater treated with Haix-Zr resin beads, F- concentrations decreased from 6.27 mg/L to 1.43 ma. In the removal of As(III), As(V), and F- from the groundwater, Haix-Fe-Zr and Haix-Zr resin beads fit the parabolic diffusion equation (PDE) suggesting that adsorption of these contaminants was consistent with inter-particle diffusion. (C) 2018 Elsevier Ltd. All rights reserved.

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