MARC details
| 000 -LEADER |
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| fixed length control field |
03545ntm a2200349 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20260713160342.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
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| fixed length control field |
t|||||r|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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| fixed length control field |
ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
260713t20252025my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0010721 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMPSA |
| Language of cataloging |
eng |
| Transcribing agency |
UMPSA |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FTKKP .T45 2025 r Bc. |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Thivvinesh A/L Raja, , , |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
In-situ immobilized laccase on bacteria cellulose: varying the laccase concentration for isotherm and kinetic models determination / |
| Statement of responsibility, etc. |
Thivvinesh A/L Raja |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMPSA, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2025 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Date of production, publication, distribution, manufacture, or copyright notice |
Β© 2025 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
59 pages : |
| Other physical details |
illustrations ; |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
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| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Chemical and Process Engineering Technology |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Final Year Report (Bachelor of Chemical Engineering ) -- Universiti Malaysia Pahang Al-Sultan Abdullah - 2025 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Include bibliographical reference |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Enhanced enzyme activity and the potential of in-situ immobilization to reduce time and cost have motivated this study, alongside the need to deepen understanding of kinetic and isotherm models. This work aims to determine the interaction of in-situ immobilized laccase on bacterial cellulose using the best-fit isotherm model by varying enzyme concentration and to elucidate the immobilization mechanism of in-situ immobilized laccase on bacterial cellulose using the suitable-fit kinetic model by varying immobilization time. Bacteria cellulose was prepared through the fermentation of Gluconacetobacter xylinus in nutrient-rich media under static conditions. For in-situ immobilization, laccase (50-800 U/ml) was added to sterilized pineapple waste media during bacteria cellulose fermentation, and immobilization was performed over periods (0 -14 days). Experimental data obtained used to calculate for bound laccase. The bound laccase data was used to calculate ππ and πΆπ that were fitted to isotherm models, including Langmuir, Freundlich, Temkin, Dubinin-Radushkevich, Sips, Redlich-Peterson, and Hill, to evaluate the interactions governing immobilization. The Langmuir model emerged as the best fit, supported by the Sips model, which exhibited Langmuir-like behavior, indicating monolayer adsorption and the parameters values obtained for maximum adsorption capacity was 0.002 and bonding energy was ranged 0.728 and 1.042. The bound laccase obtained from experimental data was used to fit in to the kinetic models. In Kinetic studies using pseudo-first-order, pseudo-second-order, and intra-particle diffusion models revealed that the pseudo-first-order model described the physical adsorption of laccase onto bacterial cellulose, characterized by weak bonding. Additionally, the intra-particle diffusion model was validated with a high regression coefficient (0.96), identifying intra-particle diffusion as the rate-limiting step. The maximum adsorption capacity and equilibrium laccase adsorbed showed consistency between experimental and calculated values. These results confirm that the in-situ immobilization of laccase onto bacterial cellulose involves monolayer, physical adsorption with diffusion-limited kinetics. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Chemical and Process Engineering Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Theses |
| General subdivision |
Dissertations |
| 856 ## - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
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| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Final Year Report |