Chemical Engineering (CE)
Recent Submissions
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Oxidation of Sulfur Dioxide with Copper (II) catalyst in aqueous solution and on poly-4-vinylpyridine resin
Air pollution by sulfur dioxide is of great concern due to its harmful effects on environment, human beings, fauna and flora. Thermal power plants and industries employing combustion of carbonaceous fuels are the major ... -
Studies on fluidised-bed electrode
Flowing electrolyte The mass transfer coefficient k between the flowing electrolyte and the outer wall of an annulus in streamline flow varies as … The mass?transfer data obtained in streamline flow in this investigation ... -
Oxidation of ortho-xylene
The thesis embodies the work on the vapour?phase oxidation of o-xylene over sintered and compacted vanadium pentoxide catalyst in a fixed?bed reactor (FBR) and a continuous stirred?tank catalytic reactor (CSTCR). A survey ... -
studies on thermal decomposition of calcium carbonate /calcium hydroxide for energy storage
Alternate energy sources are essential to meet the present?day energy demands. Non?conventional energy resources may substitute for natural sources to some extent and they alleviate discomfortable thoughts about the impending ... -
Investigations on gas-liquid ejectors
A gas–liquid ejector offers relatively higher interfacial area and can be seriously considered as a cocurrent gas–liquid contactor. A model has been proposed, which assumes the contactor comprises a series of stirred vessels ... -
Studies in drop formation
An exhaustive survey of literature has indicated that no investigation has been carried out on drop formation in non?Newtonian fluids. Further, it is noted that little attention has been paid to the problem of drop formation ... -
Chemical process deveoopment for sodium dithionite- a kinetic study of sodium formate process
(1) The kinetics of formation of sodium dithionite has been investigated in homogeneous aqueous phase. The rate of hydrolysis of sodium formate has been found to be the rate?controlling step. The following rate equation ... -
Dynamics of gas bubbles in liquids
The study of bubble formation in liquids is of great importance because of its application in the design of many industrial bubble contactors like distillation columns, bubble cap columns, absorption towers, reactors, extraction ... -
Enzymatic synthesis of esters in supercritical fluids
Lipases are enzymes that are widely used to catalyze a variety of industrially important reactions. However, lipase?catalyzed reactions are heterogeneous and mass?transfer limited. Therefore, in most cases the reaction ... -
Structure and Rheology of Lyotropic Liquid Crystals
The aim of the present work is to probe the structure and rheology of the various lyotropic liquid crystalline substances. For this purpose, a commercial rheometer is used for studying the rheology of the substance and a ... -
Dehydration of alcohols
Catalytic vapor phase dehydration of i-propanol, n-butanol, i-butanol, s-butanol and t-butanol is studied in a fixed bed flow reactor under isothermal conditions over various catalysts to understand the influence of catalyst ... -
Transition in flexible tubes and channels
A combination of experiments, flow simulations and linear stability analysis is used to develop a fundamental understanding of the instability and transition in flows through flexible tubes and channels. The present study ... -
Estimation of thermophysical properties of organic liquids: diffusion coefficients and excess volumes.
The objective of this work is to experimentally determine the thermophysical properties such as diffusion coefficients and excess volumes of mixing of some organic liquids, specifically of binary systems involving the ... -
Oxidation of Alcohols
Oxidation of ethanol and methanol are known to be feasible reactions. Equilibrium constants calculated show that these reactions are highly irreversible. Theoretically ethanol and methanol oxidations to their respective ... -
Modeling of Coalescence Cascades in Liquid-Liquid dispersions
Agitated dispersions of one liquid in another immiscible liquid invert at a critical value of dispersed phase fraction, nearly catastrophically. The dispersed phase becomes continuous and vice versa. This phenomenon has ... -
Polysterene-based compatibilizers for polymer blending : main chain epoxidation of high molecular weight polystyrene
Polystyrene has often been functionalized for its use in various commercial applications, but most often the reactive functional groups have been substituted on its benzene ring. In the present work, epoxy functional groups ... -
Studies in gas-solid reactions
Non-catalytic gas-solid reactions are of great industrial importance and have therefore attracted considerable research effort. As a result, a number of models have been proposed in literature. Among the early models, the ... -
Structure and rheology of lyotropic liquid crystalline suspensions
Suspensions in the form of solid–liquid dispersions are encountered in several industrial applications. Household detergents and processed foods can be modeled as a suspension of phase-separated or externally added particulate ... -
Heterogeneous catalytic oxidation of isobutylene in vapour-phase Ph.D. Thesis
Kinetics of the catalytic vapour-phase oxidation of isobutylene to methacrolein, an important raw material for polymer industries, was investigated in a fixed-bed isothermal flow reactor. Out of a number of catalysts ...
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