Ravikant R Gupta

Banasthali University · Department of Chemical Engineering

Spray drying is a versatile process widely used in the food, pharmaceutical, and chemical industries to produce dry powders from liquid feed. The process involves atomizing liquid into droplets, which are dried by hot gas streams, producing small, uniform, spherical particles. The resulting powder is easy to store and transport and has a long shelf...

This paper provides a comprehensive review of calcium sulfate whiskers (CSW), focusing on their synthesis methods, morphological characteristics, and diverse applications across industries. Whiskers, known for their specific length-to-diameter ratio and ordered atomic structure, offer exceptional physical and mechanical properties, making them valu...

Biodiesel and bio-ethanol are two most common biofuels which can be good substitutes for diesel and gasoline, respectively. The carbon neutral nature and low pollution are the advantages of biofuels. Transesterification of fatty material is a common process to produce biodiesel. The transesterification process is well established, and scientists th...

The world’s energy demands rely heavily on the fossil fuels as a source of thermal energy. Increasing energy demands, depleting sources of fuels, and growing pollution are the major concerns of the world. For sustainable energy, the demand of biomass energy became the reliable trend to replace fossil fuels to meet the world’s energy demand. Biomass...

Currently, energy security and environmental protection are two of the major concerns the world is facing. Electricity generation, being one of the fastest growing and most polluting sectors, needs to be improved with incorporation of efficient, sustainable, cost-effective and eco-friendly fuels and methods. Biomass can be such a fuel as it is abun...

Fire hazard is one of the major causes of fatalities in the industries and residential areas. The fire hazard in corridors/chambers is caused by the rapid rise of temperatures and presence of high concentrations of toxic gases like CO and smoke. In this study, numerical simulation is conducted with different ventilation conditions to investigate fi...

The major concern of today’s world is Energy security and environmental protection due to rapidly depleting non-renewable energy sources and increasing greenhouse gases and other pollutants from energy production. A need to focus on efficient and eco-friendly coal utilization technologies is of vital importance as coal is the most abundant and poll...

Boiling is one of the most important processes in almost every industrial heat exchanger arrangement. The present study examines the role played by nanofluids in increasing the heat transfer rate which could improve process efficiency as well as operational cost. The setup consists of a stainless steel vertical cylinder pressure vessel having a hor...

A model is proposed to describe the hydrodynamics and mass transfer in ultrafiltration with concentration‐dependent viscosity variation in the entire flow‐field. The proposed model integrates the resistance‐in‐series model with mass, momentum, and continuity equations to scrutinize the effects of the feed concentration, velocity, and transmembrane...

Weakly permeable micro-tubes are employed in many applications involving heat and/or mass transfer. During these processes, either solute concentration builds up (mass transfer) or steep change in temperature (heat transfer) takes place near the permeable wall causing a change in the viscosity of the fluid. Results of the present work suggest that...