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ETD at Indian Institute of Science (2.176 recursos)
Repository of Theses and Dissertations of Indian Institute of Science, Bangalore, India. The repository has been developed to capture, disseminate and preserve research theses of Indian Institute of Science.

Chemical Engineering (chemeng)

Mostrando recursos 1 - 20 de 52

1. Defluoridation Of Drinking Water Using Activated Alumina - Kanwar, Lalita
Excess fluoride (F-) in drinking water poses a health threat to millions of people around the world. In the present work, activated alumina (AA) has been used as an adsorbent. Data obtained from batch experiments were fitted to the (i) pseudo-first order, (ii) pseudo-second order, and (iii) Langmuir kinetic model. Model (ii) performed better than model (i), and fitted the data well. However, the rate constant for adsorption ka had to be varied as a function of the initial concentration of F- in the liquid phase c0. A more satisfactory approach is provided by Langmuir model, which fitted the data...

2. Development Of Ionic Catalysts For The Water-gas Shift Reaction And Exhaust Gas Purification - Deshpande, Parag Arvind
Treatment of fuel cell feed H2 for the removal of CO is important owing to the poisoning of the catalysts, thereby affecting the performance of the fuel cell. Strong and preferential adsorption of CO over the catalyst takes place resulting in a reduction of the power output of the cell. Therefore, it is important to treat the fuel cell feed H2 to reduce its CO content below the tolerable limit. Development of efficient catalysts for the treatment of synthesis gas for the removal of CO and and H2 enrichment of the gas to make it suitable for fuel cells is...

3. Studies On The Production Of Cellulase Enzyme By Thermophilic Fungus Thermoascus Aurantiacus - Mugeraya, Gopal

4. Network Formation In Amine Curing Of Higher Functional Epoxy Resins - Rajakumari, P Maria Nirmal

5. Studies On Multiphase And Multienzymatic Oxidation Of Glucose - Prasad, M Rajendra

6. Biobeneficiation Of Bauxite Using Aspergillus Niger - Ramasudha, T

7. Studies On Copper Extraction With 5-Dodecylsalicyl Aldoxime In Supported Liquid Membranes - Ramakanth, C

8. A Device For The Estimation Of Fluoride In Drinking Water - Sen, Ananya

9. Analysis Of Protein Purification By Affinity Chromatography - Sridhar, P

10. Modeling Of Bubble Size Distribution In Reaction Injection Molded Polyurethane Foams - Niyogi, Debdarsan

11. Studies On Toughening Of Epoxy Resins Using Elastomers - Thyagarajan, B

12. Study Of Momentum Transfer In Fluid-Fluid Systems By The Boundary Integral Method - Shreekumar, *

13. Optimization Of Fed-Batch Fermentation Processes With Neural Networks - Chaudhuri, Bodhisattwa

14. Analysis Of Microwave Thawing - Basak, Tanmay

15. Extraction Of Amino Acids Using D2EHPA In Hollow Fiber Supported Liquid Membrane - Lakshmi Tulasi, G

16. Studies On Batch And Continuous Sonochemical Reactors - Ganesh, N

17. Formation Of Cream In Emulsions - Ganesh, A V

18. Kinetics Of Photo Initiated Organic And Polymer Reactions - Vinu, R
Photo-initiated reactions involve the use of ultraviolet (UV) or visible light radiation to effect chemical transformations. Some of the advantages of photo-initiated reactions over thermal or high pressure reactions include mild reaction conditions like ambient temperature and pressure, good control over the reaction by the simple switching on/off the light source, and faster reaction kinetics. Usually, semiconductor photocatalysts or oxidizing agents are used to enhance the rate of photo reactions. “Photocatalysis” involves the generation of valence band holes and conduction band electrons by the band gap excitation of a semiconductor photocatalyst. These charge carriers produce reactive hydroxyl and superoxide radicals,...

19. Methane Storage In Activated Carbon Nanostructures : A Combined Density Functional And Monte Carlo Study - Dutta, Debosruti
Natural gas is stored as compressed natural gas (CNG) in heavy steel cylinders under pressures of 200-250 atm. However, such a method of storage has certain disadvantages which include multistage compression costs, limited driving range and safety aspects. Hence, alternative methods of storage such as adsorbed natural gas (ANG) which involve adsorbing natural gas at moderate pressures and room temperatures in a suitable nanoporous material are currently being explored. In this thesis, we have isolated model carbon nanostructures and defect geometries most likely to be found in these materials and investigated their specific interactions with methane. The thesis is concerned...

20. Sound Emission During The Flow Of Granular Materials Through Tubes And Silos - Mukesh, L Dhoriyani

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