1. Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
2. Department of Chemical Engineering and Technology, Indian Institute of Technology (BHU) Varanasi, Varanasi, Uttar Pradesh 221005, India
3. Isotope and Radiation Application Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India