Assistant Professor, Saint Cloud State University, 2013-2014
Visiting Assistant Professor, University of Iowa, 2011-2013
Postdoctoral Researcher, University of Iowa, IA 2011-2013
Ph.D., Physical and Environmental Chemistry, University of Iowa, 2011
B.Sc., Chemistry, University of Kelaniya, 2005
environmental interfaces, heterogeneous chemistry, photochemistry, mineral dust, climate, biogeochemistry, marine chemistry, environmental toxicity and health, implications of nanoscience and nanotechnology, wastewater treatment.
Dr. Rubasinghege’s research revolves around nanomaterial, polymer composite and environmental chemistry, studying hidden reaction pathways and mechanisms in environmental processes to better understand the impact of mineral oxides and engineered nanoparticles on poorly understood environmental process. One of his projects focuses on (i) how and why different metal oxides and engineered nanoparticles behave differently during their environmental processing under various environmentally relevant conditions and (ii) the potential impacts of these processes on aquatic life and human health. These interdisciplinary studies specifically focus on effects of particle size (nano vs. micro), ionic strength, organic and inorganic pollutants and solar radiation on chemical reactivity and environmental processing of metal oxides in mineral dust as a source of trace metals to aquatic life, and their follow up aqueous phase behaviors.
In another research project Dr. Rubasinghege will combine molecular level insight from above aqueous phased studies to develop inorganic polymer and carbon nanotube based catalytic systems to address various environmental issues in open water bodies, including increasing amounts of wastewater pollutants. His research involves cutting-edged-technologies in spectroscopy (FTIR, XPS, ICP & AAS, UV-VIS, DLS), microscopy (SEM, TEM) and chromatography (GC-MS, HPLC).
1. Chemistry and Photochemistry of Mineral Oxides and Engineered Nanoparticles in Atmospheric Aerosol.
2. Linking Biological Activity of Ocean Diatoms to Atmospheric Processing of Fe-containing Minerals.
3. Fate, Trasformation and Toxoclogical Implications of Pharmaceuticals and Personal Care Products.
4. Development of Nanoparticle based Catalytic Systems / Polymer Composites for Wastewater Treatments.
5. Toxicity, Mechanisms and Human Health Effects of Airborne Heavy Metals.
Meet Dr. Gayan Rubasinghege discussing his reseach
Hettiarachchi, E.; Reynolds, R.; Goldstein, H.; Moskowitz, B.; Rubasinghege, G. Iron dissolution and speciation in atmospheric mineral dust: Metal-metal synergistic and antagonistic effects. Atmospheric Environment, 2018, 187, 417-423.
Hettiarachchi, E.; Hurub, O; Rubasinghege, G. Atmospheric processing and iron mobilization of ilmenite: An iron containing ternary oxide in mineral dust aerosol. Journal of Physical Chemistry A, 2018, 122 (5), 1291-1302.
Rubasinghege, G.; Gurung, R.; Rijal, H.; Maldonado-Torres, S.; Chan, A.*; Acharya, S.; Rogelj, S.; Piyasena, M. Abiotic degradation and environmental toxicity of ibuprofen: Roles of mineral particles and solar radiation. Water Research, 2017, 131, 22-32.