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:: Volume 18, Issue 2 (Summer 2016 2016) ::
J Mil Med 2016, 18(2): 197-206 Back to browse issues page
Elimination of Arsenic (III) from Urban Drinking Water by Electrocoagulation Process
Ghader Ghanizadeh, Seyed Navid Safavi, Hamed Akbari *, Sadegh Hazrati
Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran , Akbarihamed_2005@yahoo.com
Abstract:   (4980 Views)

Aims: Drinking water pollution with trivalent arsenic [As (III)] is one of the most important health concerns in several countries. This research investigated the electrocoagulation process (EC) performance for As (III) elimination from water.

Methods: This process was performed using a monopolar arrange of Al- Steel electrodes in which the effects of reaction time (5, 10, 15 min), initial pH (5, 7, 9), current intensity (0.2, 0.4, 0.8 A) and initial concentration of As(III) (0.25, 0.5, 1, 5, 10 mg/l) were studied.

Results: The results revealed that elevation of pH from 5 to 7 and 9 led to decreasing the residual concentration of As (III) from 0.195 to 0.145 and 0.115 mg/l, respectively. Increasing of current intensity from 0.2 to 0.4 and 0.8 A led to decreasing of residual concentration of As (III) from 0.148 to 0.147 and 0.044 mg/l, respectively. The optimum operation status was determined as: pH=7, current density= 0.8 A and contact time 10 min, thus energy consumption was determined as 0.9423 Kwh/m3 of treated water. One-Way Analysis variance implied that initial concentration has significant effect on residual concentration of As (III) (p<0.05). So, in optimum status and initial concentrations of 0.25 and 0.5 mg/l of As (III) the process can meet the Iranian and WHO drinking water guidelines values.

Conclusion: The EC process without oxidation can eliminate As (III) from water, up to the Iranian recommended guidelines.

Keywords: Arsenic, Arsenite, Electrocoagulation, Drinking water
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Type of Study: Orginal Research | Subject: military medcine
Received: 2016/12/6 | Accepted: 2016/12/6 | Published: 2016/12/6
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Ghanizadeh G, Safavi S N, Akbari H, Hazrati S. Elimination of Arsenic (III) from Urban Drinking Water by Electrocoagulation Process. J Mil Med. 2016; 18 (2) :197-206
URL: http://militarymedj.ir/article-1-1558-en.html

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Volume 18, Issue 2 (Summer 2016 2016) Back to browse issues page
مجله طب‌نظامی Journal Mil Med
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