Science Aquatim SA Timisoara

Gheorghe Lazăr, Romania

Science Aquatim SA Timisoara

Gheorghe Lazăr, Romania
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Pop A.,Polytechnic University of Timişoara | Baciu A.,Polytechnic University of Timişoara | Wanko G.,Science Aquatim S.A. Timisoara | Bodor K.,Science Aquatim S.A. Timisoara | And 2 more authors.
Environmental Engineering and Management Journal | Year: 2017

Arsenic removal from groundwater as drinking water source was investigated using electrocoagulation (EC) process with horizontal anodes of iron plate under galvanostatic regime. The current density of 5 Am−2 was determined as the optimum operating conditions at the electrolysis time of maximum 25 minutes and pH ranged between 6.5 to 8.5, by which the arsenic concentration was reduced below 10 μg·L−1. The aspects related to the arsenic removal mechanism were discussed by Zeta potential. This iron anode-based EC process was successfully applied for the removal of arsenic from a real groundwater characterized by high arsenic concentration of 255.80 μg·L−1 under aeration conditions. After 15 minutes of electrolysis the arsenic removal efficiency of 99.59% was achieved under the optimum operating conditions with the energy consumption of 0.006 kWh·m−3 that is 100 times lower than the reported in the literature. © 2017, Gh. Asachi Technical University of Iasi. All rights reserved.


Baciu A.,Polytechnic University of Timişoara | Pop A.,Polytechnic University of Timişoara | Bodor K.,Science Aquatim SA Timisoara | Vlaicu I.,Science Aquatim SA Timisoara | Manea F.,Polytechnic University of Timişoara
Environmental Engineering and Management Journal | Year: 2015

In this study, the electrocoagulation process using aluminium anodes was tested as alternative for coagulation process for the drinking water treatment using two types of real groundwater sources, characterized by low turbidity, moderate and high organic load, and nitrite and ammonium species for one of them. The optimum operating conditions determined to be pH 6.5, current density (i) 25A/m2at 30 min resulted in removal efficiency of over 70 % for total organic carbon (TOC) parameter and 40 % for total nitrogen (TN) parameter. A protocol named adapted electrocoagulation consisted of I of 100 A/m2 for 5 min followed by 25 A/m2 for 10 min led to the same process efficiency for TOC and TN removal avoiding residual aluminium presence in the treated water. The electrocoagulation process integration within drinking water treatment flow was proposed.

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