Hanirah Ramli (2018) Biodegradation of phenol by candida tropicalis retl-cr1 using biofilter packed with coconut husks. Masters thesis, Universiti Malaysia Sabah.
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Abstract
Phenol is a toxic compound released into environment from many industrial waste effluents. As phenol has high toxicity level and carcinogenic compounds that commonly found relatable to human, the approach to degrade phenol must be taken seriously using the availability technologies. The available technologies to treat phenol in the environment are by physical, chemical and biological treatment. However, biological treatment is preferable because of its environmental friendliness and low cost factors. The aim of this study is to evaluate the locally isolated yeast, C tropicalis-Rf:fl-Crl adhered on various sizes of coconut husks to degrade phenol in different concentrations in a biofiltration system. The suitable coconut husks size for optimum degradation of phenol by Candida tropicalis-RETL-Crl was in shredded form in SmM of phenol as phenol degradation rate was 20 mg L-1 h-1 and phenol utilization percentage was 84 % with growth rate of 0.02 h-1 . The effect of additional glucose to phenol degradation by Candida tropica/is=-RETL-Cr1 in shredded form of coconut husks was up to 100% in 18 hours with growth rate of 0. 7 h-1 • The production of catechol as central intermediate during biodegradation of phenol as sole carbon ranges from 1.8 mg L-1 to 6.1 mg L-1 in different sizes of coconut husks whilst in mixed substrate, it ranges from 28.3 mg L-1 to 37.11 mg L-1 with shredded coconut husks. The SEM morphology images showed that the adhesions of C tropica/is-RETL-Crl are mostly inside the porous area and on internal surface of coconut husks. In conclusions, phenol was successfully degraded in sole carbon and mixed substrate conditions by C tropica/is-RETL-Crl using biofilter packed with coconut husks.
| Item Type: | Thesis (Masters) |
|---|---|
| Keyword: | Phenol biodegradation, Candida tropicalis, Biofiltration, Coconut husks, Immobilized yeast, Environmental biotechnology, Catechol, Toxic waste treatment, SEM analysis, Industrial effluents |
| Subjects: | Q Science > QR Microbiology > QR1-502 Microbiology > QR100-130 Microbial ecology T Technology > TD Environmental technology. Sanitary engineering > TD1-1066 Environmental technology. Sanitary engineering > TD895-899 Industrial and factory sanitation > TD896-899 Industrial and factory wastes |
| Department: | FACULTY > Faculty of Science and Natural Resources |
| Depositing User: | DG MASNIAH AHMAD - |
| Date Deposited: | 21 Apr 2025 11:43 |
| Last Modified: | 21 Apr 2025 11:43 |
| URI: | https://eprints.ums.edu.my/id/eprint/43516 |
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