Gopinath Halder, Ph.D., is Associate Professor, Department of Chemical Engineering, National Institute of Technology, Durgapur, West Bengal. Earlier, he served as Assistant Professor in the Department of Petroleum Engineering, Indian School of Mines University, Dhanbad. Prof. Halder has more than two decades of teaching and research experience. A member of various professional societies such as Indian Institute of Chemical Engineers (IIChE) and Indian Society for Technical Education (ISTE), Dr. Halder has authored several research papers published in reputed national and international journals. His areas of research interest include Chemical Engineering Thermodynamics and Environmental Engineering.