TY - GEN
T1 - Transport phenomena of carbazole biodegradation by immobilized Thalasosspira profundimaris cell and mechanical properties
AU - Manas, Nor Hasmaliana Abdul
AU - Drus, Muhd Nurul Azam Muhd
AU - Zulkharnain, Azham
AU - Hui, Josephine Lai Chang
AU - Azelee, Nur Izyan Wan
AU - Dailin, Daniel Joe
N1 - Publisher Copyright:
© 2019 Author(s).
PY - 2019/9/6
Y1 - 2019/9/6
N2 - Carbazole is a heterocyclic aromatic compound that imposes threat to the environment when contaminates water source. A marine-isolated bacterium, Thalassospira profundimaris shows ability to degrade carbazole. The use of free-cell for bioremediation is inefficient as the cells are exposed to harsh environmental condition. In this study, immobilizations of T. profundimaris in gellan gum were investigated to develop robust systems for bioremediation. The mechanical strength and its relationship with transport of carbazole was investigated. The findings proved that concentration of immobilization media affects diffusivity and mechanical strength. Higher media concentration formed a stronger bead with lower diffusivity where lower concentration formed soft bead with higher diffusivity. The optimum concentration of gellan gum was 0.7% (w/v) with 61% carbazole degradation recorded and an optimum diffusivity of 36.8 × 10-7 cm2/s. It has the highest Young's modulus (0.041810 N/mm2) among other concentrations. The findings of the optimum carbazole degradation, strength and diffusivity were profound to increase the performance of the bacteria entrapped inside the immobilization media for bioremediation and withstand harsh environment.
AB - Carbazole is a heterocyclic aromatic compound that imposes threat to the environment when contaminates water source. A marine-isolated bacterium, Thalassospira profundimaris shows ability to degrade carbazole. The use of free-cell for bioremediation is inefficient as the cells are exposed to harsh environmental condition. In this study, immobilizations of T. profundimaris in gellan gum were investigated to develop robust systems for bioremediation. The mechanical strength and its relationship with transport of carbazole was investigated. The findings proved that concentration of immobilization media affects diffusivity and mechanical strength. Higher media concentration formed a stronger bead with lower diffusivity where lower concentration formed soft bead with higher diffusivity. The optimum concentration of gellan gum was 0.7% (w/v) with 61% carbazole degradation recorded and an optimum diffusivity of 36.8 × 10-7 cm2/s. It has the highest Young's modulus (0.041810 N/mm2) among other concentrations. The findings of the optimum carbazole degradation, strength and diffusivity were profound to increase the performance of the bacteria entrapped inside the immobilization media for bioremediation and withstand harsh environment.
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U2 - 10.1063/1.5125513
DO - 10.1063/1.5125513
M3 - Conference contribution
AN - SCOPUS:85072614704
T3 - AIP Conference Proceedings
BT - Proceedings of the 2nd International Conference on Biosciences and Medical Engineering, ICBME 2019
A2 - Mahat, Naji Arafat
A2 - Wahab, Roswanira Ab.
A2 - Huyop, Fahrul Zaman
A2 - Keyon, Aemi Syazwani Abdul
A2 - Attan, Nursyafreena Binti
A2 - Chandren, Sheela
A2 - Gunam, Ida Bagus Wayan
PB - American Institute of Physics Inc.
T2 - 2nd International Conference on Biosciences and Medical Engineering 2019: Towards Innovative Research and Cross-Disciplinary Collaborations, ICBME 2019
Y2 - 11 April 2019 through 12 April 2019
ER -