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A fundamental approach to predicting mass transfer coefficients in bubble column reactors
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2014
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| _version_ | 1867613199546712065 |
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| access_status_str | Open Access |
| author | Manjo, Persis Yefon |
| author2 | Rawatlal, Randhir |
| author_browse | Manjo, Persis Yefon Rawatlal, Randhir |
| author_facet | Rawatlal, Randhir Manjo, Persis Yefon |
| author_sort | Manjo, Persis Yefon |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/9120 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:20.328Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Chemical Engineering |
| publisherStr | Department of Chemical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/9120 A fundamental approach to predicting mass transfer coefficients in bubble column reactors Manjo, Persis Yefon Rawatlal, Randhir Includes bibliographical references. A bubble column reactor is a vertical cylindrical vessel used for gas-liquid reactions. Bubble Columns have several applications in industry due to certain obvious advantages such as high gas-liquid interfacial area, high heat and mass transfer rates, low maintenance requirements and operating costs. On the other hand, attempts at modelling and simulation are complicated by lack of understanding of hydrodynamics and mass transfer characteristics. This complicates design scale-up and industrial usage. Many studies and models have attempted to evolve understanding of the hydrodynamic complexity in Bubble Columns reactors. A closer look at these studies and models reveals a variety of solution methods for different systems (Frössling, 1938; Clift et al., 1978; Hughmark, 1967; Dutta, 2007; Ranz and Marshall, 1952; Benitez, 2009; Buwa et al., 2006; Suzzia et al., 2009; Wylock et al., 2011). Numerous correlations (Frössling, 1938; Clift et al., 1978; Hughmark, 1967; Dutta, 2007; Ranz and Marshall, 1952; Benitez, 2009; Buwa et al., 2006) exist but to date in literature, there is no general approach to determining accurate estimates of average mass transfer coefficient values. Good estimates of the average mass transfer coefficient will improve the predictive capacity of the associated models. Recent attempts at modelling micro-scale bubble-fluid interaction resulted in the Bubble Cell Model, BCM, (Coetzee et al., 2009) which simulates the velocity vector field around a single gas bubble in a flowing fluid stream using a Semi-Analytical model. The aim of the present study is to extend the BCM applications by integrating the mass balance into the framework to predict the average mass transfer coefficient in bubble columns. A nitrogen-water steady state system was simulated in an axisymmetric grid where mass transfer occurs between the gas and liquid. 2014-11-05T03:49:22Z 2014-11-05T03:49:22Z 2014 Master Thesis Masters MSc http://hdl.handle.net/11427/9120 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Manjo, Persis Yefon A fundamental approach to predicting mass transfer coefficients in bubble column reactors |
| thesis_degree_str | Master's |
| title | A fundamental approach to predicting mass transfer coefficients in bubble column reactors |
| title_full | A fundamental approach to predicting mass transfer coefficients in bubble column reactors |
| title_fullStr | A fundamental approach to predicting mass transfer coefficients in bubble column reactors |
| title_full_unstemmed | A fundamental approach to predicting mass transfer coefficients in bubble column reactors |
| title_short | A fundamental approach to predicting mass transfer coefficients in bubble column reactors |
| title_sort | fundamental approach to predicting mass transfer coefficients in bubble column reactors |
| url | http://hdl.handle.net/11427/9120 |
| work_keys_str_mv | AT manjopersisyefon afundamentalapproachtopredictingmasstransfercoefficientsinbubblecolumnreactors AT manjopersisyefon fundamentalapproachtopredictingmasstransfercoefficientsinbubblecolumnreactors |