Subbiah Ravichandran

Publications (3)7.04 Total impact

• Article: Removal of NO3– from Drinking Water by Electrocoagulation – An Alternate Approach

  Subramanyan Vasudevan, Florence Epron, Jothinathan Lakshmi, Subbiah Ravichandran, Swaminathan Mohan, Ganapathy Sozhan
  CLEAN - Soil Air Water 03/2010; 38(3):225 - 229. · 2.18 Impact Factor
• Source

  Available from: Suresh kannan Balasingam

  Article: An alternative approach to selective sea water oxidation for hydrogen production

  Rengarajan Balaji, Suresh Balasingam, Kannan, Jothinathan Lakshmi, Natarajan Senthil, Subramanyan Vasudevan, Ganapathy Sozhan, Ashok Kumar Shukla, Subbiah Ravichandran
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  ABSTRACT: Sea water electrolysis is one of the promising ways to produce hydrogen since it is available in plentiful supply on the earth. However, in sea water electrolysis toxic chlorine evolution is the preferred reaction over oxygen evolution at the anode. In this work, research has been focused on the development of elec-trode materials with a high selectivity for oxygen evolution over chlorine evolution. Selective oxidation in sea water electrolysis has been demonstrated by using a cation-selective polymer. We have used a perm-selective membrane (Nafion Ò), which electrostatically repels chloride ions (Cl À) to the electrode surface and thereby enhances oxygen evolution at the anode. The efficiency and behaviour of the electrode have been characterized by means of anode current efficiency and polarization studies. The surface morphol-ogy of the electrode has been characterized by using a scanning electron microscope (SEM). The results suggest that nearly 100% oxygen evolution efficiency could be achieved when using an IrO 2 /Ti electrode surface-modified by a perm-selective polymer.
  Electrochemistry Communications 07/2009; 11:1700-1702. · 4.86 Impact Factor
• Article: Studies on the Removal of Phosphate from Drinking Water by Electrocoagulation Process

  Subramanyan Vasudevan, Ganapathy Sozhan, Subbiah Ravichandran, Jeganathan Jayaraj, Jothinathan Lakshmi, Sagayaraj Margrat Sheela
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  ABSTRACT: The present study provides an electrocoagulation process for the removal of phosphate from drinking water using mild steel as the anode and stainless steel as the cathode. The studies were carried out as a function of pH, temperature, current density, and so forth, and the adsorption capacity was evaluated using both Langmuir and Freundlich isotherm models. The results showed that the maximum removal efficiency of 98% was achieved at a current density of 0.05 A·dm-2 at a pH of 6.5. The adsorption of phosphate preferably fitting the Langmuir adsorption isotherm suggests monolayer coverage of adsorbed molecules. The adsorption process follows second-order kinetics. Temperature studies showed that adsorption was endothermic and spontaneous in nature.
  02/2008;