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Efficient and Rapid Combined Electrocoagulation–Filtration of Arsenic in Drinking Water.

Authors :
Channa, Najeebullah
Gadhi, Tanveer A.
Mahar, Rasool Bux
Ali, Imran
Sajjad, Sana
Freyria, Francesca S.
Bonelli, Barbara
Widderich, Sonke
Frechen, Franz-Bernd
Source :
Water (20734441); Jun2024, Vol. 16 Issue 12, p1684, 15p
Publication Year :
2024

Abstract

Arsenic (As) contamination is a severe problem in drinking-water sources. This study designed and investigated a novel combined electrocoagulation–filtration (ECF) system to investigate As treatment and filtration in drinking water in collaboration with HANDS-Pakistan and Medico International, Germany. Two separate pilot-scale ECF systems were designed and developed with an electrocoagulation (EC) unit and a commercially available PAUL<superscript>®</superscript> filter configured with vertical flat-sheet ultra-low-pressure membranes of 0.04 µm pore size for the combined treatment and filtration of different As concentrations. Real drinking water at different As concentrations, i.e., 100, 200, and 300 μg/L were tested on one ECF system with EC electrodes of iron (Fe) and another system with aluminum (Al), at different treatment times (0, 5, 10, 20, 45, 60, 120, 180 min), at a fixed current density (12 mA/cm<superscript>2</superscript>) and water flow rate of 1 L/min. The initial results showed 99% As removal within 5 min with the combined ECF treatment for both electrodes of Fe and Al. In addition, the effect of ECF on different water-quality parameters and the ionic interference on ECF performance and As filtration were analyzed. The results showed the promising potential of combined ECF treatment and filtration for treating and purifying As. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20734441
Volume :
16
Issue :
12
Database :
Complementary Index
Journal :
Water (20734441)
Publication Type :
Academic Journal
Accession number :
178156475
Full Text :
https://doi.org/10.3390/w16121684