ISOLATION OF SOME PLASTIC-DEGRADING BACTERIAL STRAINS FROM SOIL SAMPLES IN VIETNAM

Nguyễn Thị Tâm Thư; Tô Lan Anh; Nguyễn Thị Kim Linh; Phạm Kiên Cường

doi:10.34238/tnu-jst.10653

ISOLATION OF SOME PLASTIC-DEGRADING BACTERIAL STRAINS FROM SOIL SAMPLES IN VIETNAM

About this article

Received: 23/06/24 Revised: 16/10/24 Published: 17/10/24

Authors

1. Nguyen Thi Tam Thu , Institute of New Technology/ Academy of Military Science and Technology
2. To Lan Anh, Institute of New Technology/ Academy of Military Science and Technology
3. Nguyen Thi Kim Linh, Northern Mountainous Agriculture and Foretry Science Institute - NOMAFSI
4. Pham Kien Cuong, Institute of New Technology/ Academy of Military Science and Technology

Abstract

Plastics are materials that are widely used in various applications, especially food packaging. However, these synthetic polymers such as PE, PET were synthesized from fossil fuels that are very difficult to degrade naturally and cause serious environmental pollution. One promising and safe solution to handle this problem is using microorganisms for plastic biodegradation. Natural microorganisms show the potential ability to degrade many persistent and toxic pollutants such as dioxin as well as other inert compounds. In this study, two strains capable of degrading PE and PET plastics were reported for their biological properties and biodegradability of these plastics. Both strains were identified to belong to genus Bacillus and showed the ability to grow well at 35^oC, pH 7 as well as to degrade protein, starch, cellulose. However, the decomposition of PE and PET plastic efficiency only reached 4% respectively in 60 days based on imaging the film surface using a scanning electron microscope, FTIR spectrum, weight loss and changes in tensile strength and elongation.

Keywords

Microorganisms; PE plastic; Bacillus; Biodegradation; Persistant

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DOI: https://doi.org/10.34238/tnu-jst.10653

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