1. Environment Emission and CRM Section, CSIR-Central Institute of Mining and Fuel Research, Dhanbad, Jharkhand, 828108, India
2. Coal Quality and Value Addition Division, CSIR-Central Institute of Mining and Fuel Research, Dhanbad, Jharkhand, 828108, India
3. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
4. Department of Chemistry, School of Basic Sciences, Manipal University Jaipur, Jaipur – 303007, Rajasthan, India