Subrata Kumar Majumder, PhD, is a Professor in the Chemical Engineering Department at the Indian Institute of Technology, Guwahati, India. His research interests include multiphase flow and reactor development, hydrodynamics in multiphase flow, mineral processing, and process intensification and micro-nano bubble science and technology and its applications. He is a recipient of several awards and serves on the editorial boards of several journals. He has authored five book chapters, has presented 27 conference papers, and has published 74 articles in several reputed refereed journals. He has carried out several sponsored and consultancy projects and has done international collaboration. Presently he is working in the field of microbubble science and technology and its applications in mineral beneficiation; removal of arsenic, ammonia, dye, phenolic and pharmaceutical derivatives; and process intensification by developing ejector induced gas-aided extraction process.

• Introduction. Gas Distribution. Gas Holdup Characteristics. Frictional Pressure Drop. Bubble Size Distribution. Dispersion Phenomena. Mass Transfer Phenomena in Downflow Gas Interacting Slurry Reactor (DGISR)

Subrata Kumar Majumder, PhD, is a Professor in the Chemical Engineering Department at the Indian Institute of Technology, Guwahati, India. His research interests include multiphase flow and reactor development, hydrodynamics in multiphase flow, mineral processing, and process intensification and micro-nano bubble science and technology and its applications. He is a recipient of several awards and serves on the editorial boards of several journals. He has authored five book chapters, has presented 27 conference papers, and has published 74 articles in several reputed refereed journals. He has carried out several sponsored and consultancy projects and has done international collaboration. Presently he is working in the field of microbubble science and technology and its applications in mineral beneficiation; removal of arsenic, ammonia, dye, phenolic and pharmaceutical derivatives; and process intensification by developing ejector induced gas-aided extraction process.

• Introduction. Gas Distribution. Gas Holdup Characteristics. Frictional Pressure Drop. Bubble Size Distribution. Dispersion Phenomena. Mass Transfer Phenomena in Downflow Gas Interacting Slurry Reactor (DGISR)

Subrata Kumar Majumder, PhD, is a Professor in the Chemical Engineering Department at the Indian Institute of Technology, Guwahati, India. His research interests include multiphase flow and reactor development, hydrodynamics in multiphase flow, mineral processing, and process intensification and micro-nano bubble science and technology and its applications. He is a recipient of several awards and serves on the editorial boards of several journals. He has authored five book chapters, has presented 27 conference papers, and has published 74 articles in several reputed refereed journals. He has carried out several sponsored and consultancy projects and has done international collaboration. Presently he is working in the field of microbubble science and technology and its applications in mineral beneficiation; removal of arsenic, ammonia, dye, phenolic and pharmaceutical derivatives; and process intensification by developing ejector induced gas-aided extraction process.

• Introduction. Gas Distribution. Gas Holdup Characteristics. Frictional Pressure Drop. Bubble Size Distribution. Dispersion Phenomena. Mass Transfer Phenomena in Downflow Gas Interacting Slurry Reactor (DGISR)