Dr. G. Sashikesh

  • Senior Lecturer in Physical and Theoretical Chemistry
    Department of Chemistry,
    University of Jaffna,
    Sri Lanka.
  • sashikesh@univ.jfn.ac.lk, sashikesh@gmail.com
  • Office: +94 (0)21 2218193
    Mobile: +94 (0)77 668 1425
  1. My research interest are Synthesis and characterization of natural activated carbon; waste water treatment and water purification; extraction and isolation of natural compounds;theoretical and experimental aspects of spectroscopic and reaction dynamics.
  2. Natural activated carbon and its application for environmental remediation. Synthesis a novel biomass-based activated carbon from natural plant materials and to investigate its effectiveness in the removal of heavy metal and toxic compounds from aqueous solution. The synthesised activated carbon was characterised by Fourier transform infrared spectroscopy, X-ray diffraction and different physical properties, such as bulk density, particle size, zeta potential and activated surface area were also determined. Batch sorption study were carried out for the removal of heavy metal and toxic compounds. Investigate the factors that influence the amount of sorption, such as solution pH, concentration of heavy metal and toxic compounds, contact time, temperature and dosage of adsorbent.
  3. Extraction of natural dyes and determine their rate of degradation The natural dyes from leaves, flowers, fruits, seeds are utilized for colouring of textile. The extracted natural dye was characterised by Fourier transform infrared spectroscopy and UV-VIS spectroscopy. Colour fading of a dye material is arises due to the degradation of dye which results in different degrees of loss of intact dye molecules. Investigate the factors that influence the degradation of dyes, such as pH, concentration, temperature, intensity of light, presence of oxidants and BET-surface area.
  1. Student counsellor, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka(2017 – to date).
  2. Member, Internal Quality Assurance Cell, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka(2015 – to date).
  3. Overall Coordinator, Applied Science Degree Programme, Faculty of Science, University of Jaffna, Sri Lanka(2014 – to date).
  4. Financial Chair, Jaffna University International Research Conference, University of Jaffna, Sri Lanka (2014).
  5. Activity Coordinator, Quality Innovation Grant (QIG) Physical Science Study Programme, Faculty of Science, University of Jaffna, Jaffna, Sri Lanka (2013 – 2016).
  6. Board Member, Faculty of Science, University of Jaffna, Sri Lanka (2012 – to date).
  7. Research Consultant, Palmyrah Research Institute, Kaithady, Jaffna, Sri Lanka (2013 – 2015).
  1. Senathirajah, T., Rasalingam, S. and Sashikesh, G., Extraction of the Cyanidin-3-Sophoroside from Hibiscus Rosa-Sinensis: An Efficient Natural Indicator over a Wide Range of Acid-Base Titrations, , Journal of Natural Product and Plant Reseources, 7(3), 1-7, 2017
  2. Velauthamurty. K., Nagenthirarajah. N. and Sashikesh. G., Analysis of salt, water, and soil samples from selected areas in Jaffna Peninsula, Journal of Der Pharmacia Lettre, 9(4), 1-11, 2017.
  3. Velauthamurty. K., Mary. S., Sashikesh. G. and Srivijeindran. S., Enhance the quality of palmyrah (Borrasusflabellifer) jaggery, Journal of Natural Product and Plant Reseources, 5(2), 37-42, 2015.
  4. Velauthamurty. K., Balaranjan. S. and Sashikesh. G., A Feasibility Study for the Authentication of PalmyrahJaggery Using NIR Spectroscopy, Archives of Applied Science Research, 6(6), 2014.
  5. Sashikesh, G., So. E., Ford, M. S. and Softley, T. P., “Surface ionization of molecular H_2 and atomic H Rydberg states at doped silicon surfaces”, Journal of Molecular Physics, 112 (18), 2495-2503, 2014.
  6. Sashikesh, G., Ford, M. S. and Softley, T. P., “Ionization of Rydberg H_2 Molecules at Doped Silicon Surfaces”, Journal of Chemical Physics, 138, 114308, 2013.
  7. Ganeshalingam, S., Jeyadevan, J. P. and Kuganathan, N., “Physicochemical Analysis of Pond Water Samples from Selected Areas in Valukkai Aru Drainage Channel, Jaffna, Sri Lanka”, Water Research & Development, 2 (1 & 2): 12 – 23, 2012.
  8. Kuganathan, N. and Ganeshalingam, S., “Chemical Analysis of Datura Metal Leaves and Investigation of the Acute Toxicity on Grasshoppers and Red Ants”, E-Journal of Chemistry, 8(1): 107-112, 2011.
  9. vGayangani. W. M. M. M. P. U., Rasalingam. S. and Sashikesh. G., “Impact of Particle Sizes of the Strychnospotatorum Stem on the Removal of Iron from Ground Water”, 5thInternational Symposium on water quality and human health: Challenges Ahead, PGIS, Peradeniya, Sri Lanka, 05, 33, 05–06 August, 2016.
  10. Tharsika. S., Sashikesh. G., Srikaran. R., Rathiga. S. And Shivatharsiny. R., “Stability Study of Yellow Colour Pigment Extracted from Tumeric (Curcuma Longa) Root”, Jaffna Science Association, Jaffna, Sri Lanka, 23 (01), 02, 04-06 May, 2016.
  11. Mary. S., Sashikesh. G., Nilushiny. A. M. and Srivijeindran. S., “Assessment on water purification capabilities of activated charcoal prepared from Palmyrah (Borrasusflabellifer) kernel shell by different carbonization and chemical activation processes”, International conference on Multidisciplinary Approaches (ICMA), 2, 2015.
  1. CHE202GC3: Atomic and molecular structure and Basic principles of molecular spectroscopy.
  2. CHE301GC2: Analytical chemistry.
  3. CHE302GC3: Electrochemistry, Chemical kinetics and Surface chemistry.
  4. CHE301MC3: Advanced analytical and spectroscopic techniques.
  5. • CHE402MC4: Quantum Chemistry, Statistical Thermodynamics, Advanced Surface Chemistry, Macromolecules and Aggregates.
  6. CHE403XS3: Industrial Waste Management and Cleaner Production.
  7. ENS242GE2: Environmental Chemistry.
  8. ENS342GE2: Environmental Pollution and Management
  1. University Research Grant, University of Jaffna, Jaffna, Sri Lanka (2015-2017)
  2. Perkin Research Studentship, Magdalen College, University of Oxford, United Kingdom (2007-2011).
  3. Clarendon Scholarship, Magdalen College, University of Oxford, United Kingdom (2007-2010).
  4. Merit award, inter university chemistry competition, Royal Society of Chemistry, Sri Lanka (2006).
  5. Prof. S. Mageswaran Gold Medal, best performance in fourth year Advanced Organic Chemistry (Theory & practical) in the Honours degree Examination, University of Jaffna, Sri Lanka (2005).
  6. University (ThambiahMudaliyarChatran trust) Prize, best performance of the highest average marks of the Honours degree in Science, University of Jaffna, Sri Lanka (2005).
  7. Sir. ArunachalamMahadeva Memorial Prize, best performance in Honours degree in Chemistry, University of Jaffna, Sri Lanka (2005).
  8. Ratnanathar Memorial Prize, best performance in third examination in Science, University of Jaffna, Sri Lanka (2003).
  9. Edmund J. Cooray Memorial Prize, best student selected to do Honours Degree in Chemistry, University of Jaffna, Sri Lanka (2002).
  1. Chairperson, Jaffna Science Association (Section A), Jaffna, Sri Lanka (2017).
  2. Treasurer, Jaffna University Science Teachers’ Association, University of Jaffna, Sri Lanka (2016 – 2017).
  3. Secretary, Jaffna Science Association (Section A), Jaffna, Sri Lanka (2016).
  4. • Assistant Supervisor, Australian National Chemistry Quiz contest conducted for G.C.E.O/L & G.C.E. A/L students, Institute of Chemistry, Ceylon (2013 – 2016).
  5. Social Secretaries, Clarendon Scholars’ Council, University of Oxford, United Kingdom (2008 – 2010).
  6. Editor, Science Student Union, University of Jaffna, Jaffna, Sri Lanka (2004 – 2005).
  7. Junior Treasurer, Chemical Society, University of Jaffna, Jaffna, Sri Lanka (2003 – 2004).