In recent years, electrocoagulation has been successfully used for wastewater treatment and is efficient in heavy metal ions removal. In the present work, electrocoagulation has been used for the removal of Hg(II) from synthetic wastewaters containing up to 20 mg/L of mercury. The electrode materials used are stainless steel (SS) and aluminum (Al). The effects of operating parameters, viz., current density, time of electrocoagulation, distance between electrodes, initial pH of the solution, presence of electrolyte in the solution and temperature have been studied. It was observed that more than 99% Hg(II) removal can be achieved by keeping the distance between SS and Al electrodes from 2 to 6 cm and initial pH range from 3 to 7. The results show that the pseudo second-order kinetics fits the data well. Also, preliminary cost estimation was reported.
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Research Article|
April 01 2012
Electrocoagulative treatment of mercury containing aqueous solutions Available to Purchase
Z. V. P. Murthy;
1Department of Chemical Engineering, S. V. National Institute of Technology, Surat 395 007, Gujarat, India E-mail: ;[email protected]
E-mail: [email protected]
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Snehal Parmar
Snehal Parmar
1Department of Chemical Engineering, S. V. National Institute of Technology, Surat 395 007, Gujarat, India E-mail: ;[email protected]
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Water Sci Technol (2012) 65 (8): 1468–1474.
Article history
Received:
October 10 2011
Accepted:
December 07 2011
Citation
Z. V. P. Murthy, Snehal Parmar; Electrocoagulative treatment of mercury containing aqueous solutions. Water Sci Technol 1 April 2012; 65 (8): 1468–1474. doi: https://doi.org/10.2166/wst.2012.036
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