320 refereed scientific journal papers, 38 book chapters. He co-edited a book with Ralph Mitchell on ‘Environmental Microbiology’ (2nd ed, John Wiley-Blackwell. 2010), and wrote a book on ‘Biosusceptibility of Polymers and Fiber-reinforced Composites and Testing Methods’ (Springer, 2017), and additionally edited/co-edited 8 special issues in International Biodeterioration & Biodegradation, Ecotoxicology, International Journal of Molecular Sciences, and Frontiers in Microbiology.
His recent research interest includes anaerobic ammonium oxidation and nitrite-dependent anaerobic methane oxidation; oil field microbiology for enhanced oil recovery and pollution remediation; and microbiology of cultural heritage.
He serves as editor-in-chief for International Biodeterioration & Biodegradation, Applied Environmental Biotechnology; assistant chief editor for Frontier in Microbiology: Microbiotechnology Ecotoxicology and Bioremediation (till 2016); associate editor for Ecotoxicology, Journal of Environmental Engineering & Ecological Science, Journal of Polymers and the Environment, and International Journal of Environmental Science and Technology, and as editorial board member for Biodegradation, Environmental Geochemistry and Health, and Microbes and the Environment (2007-2010).
He is also the International Board Member, International Society for Subsurface Microbiology (2016– ); ambassador of International Society for Microbial Ecology.