Staff Directory

Rajkumar Gangappa known as Raj

20170227 021648

Contact Details


BSc (Microbiology and Biochemistry), MSc (Applied Genetics), PhD (Microbiology)


I am an applied microbiologist. I have been investigating a range of bacteria for their use in the extraction of heavy metals from various wastes, industrial waste-water treatment, and radionuclide bioremediation. Currently, I am working in the areas of C1 gas bioconversions.




Gangappa, R., Farrier, A., & Macaskie, L. E. (2017). Eu3+ Sequestration by Biogenic Nano-Hydroxyapatite Synthesized at Neutral and Alkaline pH. Geomicrobiology Journal, 34 (9), 753–759.

Gangappa, R., Yong, P., Singh, S., Mikheenko, I., Murray, A. J., & Macaskie, L. E. (2016). Hydroxyapatite Biosynthesis by a Serratia sp. and Application of Nanoscale Bio-HA in the Recovery of Strontium and Europium. Geomicrobiology Journal, 33(3-4), 267-273.

Gangappa, R., Rauf, K. M., Campbell, A. K., Hogg, S. I., & Thomas, M. C. (2012). Biosignatures of ‘Red Rain’ Microbes Revealed by UV-Visible and Fluorescence Spectroscopy. International Journal of Microbial Resource Technology, 2(3), 16-28.

Gangappa, R., Burchell, M. J., & Hogg, S. I. (2014). Morphological and Molecular Analysis Calls for a Reappraisal of the Red Rain Cells of Kerala. Current Microbiology, 68(2), 192-198.

Gangappa, R., & Hogg, S. I. (2013). DNA unmasked in the red rain cells of Kerala. Microbiology, 159(1), 107-111.

Gangappa, R. (2012). Investigation of the biological properties of Kerala red rain cells (Doctoral dissertation, University of South Wales). Available at

Gangappa, R., Wickramasinghe, C., Wainwright, M., Kumar, A. S., & Louis, G. (2010). Growth and replication of red rain cells at 121 oC and their red fluorescence. arXiv preprint arXiv:1008.4960.


Gangappa, R., Thomas, M., & Hogg, S. (2013, Sep). Biosignatures of Kerala red rain cells: Implications for understanding their origin. In European Planetary Science Congress 2013, held 8-13 September in London, UK. Online at:

Gangappa, R., Thomas, M., Hogg, S. (2013, April). Biological properties of Kerala red rain cells: Insights into the environmental conditions of their origin. In 5th UK Astrobiology Conference, UK Centre for Astrobiology, Edinburgh, United Kingdom.

Gangappa, R. and Hogg, S. (2012, March). Demonstration of DNA in the Red Rain Cells of Kerala. The International Conference on Molecular Ecology, Vienna, Austria.

Gangappa, R., Thomas, M., Hogg, S. (2012, July). Fluorescence properties of compounds in the red rain cells of Kerala. Society for General Microbiology, Autumn Conference, University of Warwick, United Kingdom.

Gangappa, R., Thomas, M., Hogg, S. (2012, Oct). Biological properties of Kerala red rain cells: A possible new opportunity in biotechnological exploration. The Welsh Microbiology Association (WMA) Winter Meeting, United Kingdom.


Bioremediation of Radionuclides
Extraction of metals from urban mines
Industrial wastewater treatment
C1 gas bioconversions

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