1. Department of Biotechnology and Environmental Sciences; Thapar University; Patiala 147 004 Punjab India
2. Center for the Environment; Indian Institute of Technology Guwahati; Guwahati 781 039 Assam India
3. Department of Civil Engineering; Indian Institute of Technology Guwahati; Guwahati 781 039 Assam India
4. Department of Biotechnology; Indian Institute of Technology Guwahati; Guwahati 781 039 Assam India