Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6664108 | Journal of Environmental Chemical Engineering | 2018 | 26 Pages |
Abstract
In this study, laboratory scale experiments were conducted with the horizontal continuous-flow EC reactor as a standalone technology with the capacity of 300â¯L/day with iron (Fe) plate bipolar electrodes to assess its efficiency in the removal of arsenic from raw groundwater without pre- and post-treatment pH modification of groundwater. The optimum EC reactor operating conditions were determined to be current density of 1.98â¯A/m2, charge loading of 54â¯C/L, flow rate of 12â¯L/h. The EC reactor was able to remove 96% of arsenic from raw groundwater and met respective World Health Organization (WHO) guideline value of 10â¯Î¼g As/L within the 4â¯h experimental runs. The Fe electrode polarity change at 30â¯min successfully controlled passivation of Fe electrodes and enabled a steady reactor operation with the high As removal efficiency. Residual Fe concentration in treated groundwater was in the range 0.17â¯Â±â¯0.07â¯mg/L and met WHO guideline value for drinking water. The preliminary estimated operating cost at the optimum operating conditions was 0.0135â¯â¬/m3.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Emilijan Mohora, Srdjan RonÄeviÄ, Jasmina Agbaba, Kristiana ZrniÄ, Aleksandra TubiÄ, Božo Dalmacija,