Electroadsorption of arsenic from natural water in granular activated carbon

被引：20

作者：

Beralus, Jean-Mackson ^{[1
,2
]}

Ruiz-Rosas, Ramiro ^{[1
,2
]}

Cazorla-Amoros, Diego ^{[1
,2
]}

Morallon, Emilia ^{[1
,2
]}

机构：

[1] Univ Alicante, Dept Quim Fis, E-03080 San Vicente Del Raspeig, Spain

[2] Univ Alicante, Inst Univ Mat, San Vicente Del Raspeig, Spain

来源：

FRONTIERS IN MATERIALS | 2014年 / 1卷

关键词：

electroadsorption; water treatment; heavy metals remediation; activated carbon;

D O I：

10.3389/fmats.2014.00028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The adsorption and electroadsorption of arsenic from a natural water has been studied in a filter-press electrochemical cell using a commercial granular activated carbon as adsorbent and Pt/Ti and graphite as electrodes. A significant reduction of the arsenic concentration is achieved when current is imposed between the electrodes, especially when the activated carbon was located in the vicinity of the anode. This enhancement can be explained in terms of the presence of electrostatic interactions between the polarized carbon surface and the arsenic ions, and changes in the distribution of most stable species of arsenic in solution due to As(III) to As(V) oxidation. In summary, electrochemical adsorption on a filter press cell can be used for enhancement the arsenic remediation with activated carbon in the treatment of a real groundwater.

引用

页数：9

共 48 条

[31] Arsenic species interactions with a porous carbon electrode as determined with an electrochemical quartz crystal microbalance [J].