Electrocoagulation: Promising Technology for Removal of Fluoride from Drinking Water - A Review

Author: Umesh Kumar Garg* and Chetna Sharma**

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Abstract

Electrocoagulation has a long history as a water treatment technology having been employed to remove a wide range of pollutants. Inspite of its manifold applications the technique has never been accepted as a mainstream water treatment technology due to lack of a systematic approach to electrocoagulation reactor design, operation and the issue related to electrode dissolution over period of time. However recent technical improvements made in the field of EC has increased its popularity. Recently, electrocoagulation (EC) has been playing more prominent role in the drinking water treatment because it provides some significant advantages such as quite compact, easy operation, automation, no chemical additives, high velocities and reduced amount of sludge. In this paper various electrocoagulation studies conducted for the efficient removal of fluoride from water has been compiled and presented as available in the literature.

Keywords

Electrocoagulation, Drinking Water, Removal of Fluoride

Conclusion

Electrocoagulation technology has achieved a level of applicability and hence examined as potential defluoridation technology. Compared with traditional flocculation–coagulation, electrocoagulation has the advantage of removing the smallest colloidal particles and relatively low amount of residue generation. In spite of having numerous advantages, EC has some drawbacks such as the periodic replacement of sacrificial anodes. Also it requires a minimum conductivity depending on reactor design that limits its use with water containing low dissolved solids. In addition the control of residual aluminium, technical and economical optimization of the process according to the quality of water being treated needs to be taken into considerations. Although large numbers of studies are available in literature further studies are required to elucidate the capability and limitations of the process. In order to scale up the method, the future work should be focused on investigating the influenc

References

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How to cite this article

Umesh Kumar Garg* and Chetna Sharma (2016). Electrocoagulation: Promising Technology for Removal of Fluoride from Drinking Water - A Review , Biological Forum – An International Journal 8(1): 248-254.