Ecofriendly Degradation of Polyethylene Plastics Using Oil Degrading Microbes

Author(s): Liny Padmanabhan*, Shreya Varghese, Raj Kumar Patil, H.M. Rajath, R.K. Krishnasree, M. Ismail Shareef.

Journal Name: Recent Innovations in Chemical Engineering
Formerly: Recent Patents on Chemical Engineering

Volume 13 , Issue 1 , 2020

Become EABM
Become Reviewer

Graphical Abstract:


Abstract:

Background & Objective: Plastics are strong, light weight and durable due to which it has wide applications. Degradation of plastics is difficult due to their xenobiotic origin and recalcitrant nature. Hence, accumulation of plastics in the environment is posing an increasing ecological threat.

Methods: Various methods are preferred for the reduction of plastics in the environment, of which degradation by chemical and biological means are considered to be more effective. In the biodegradation of plastics, micro organisms play a pivotal role. In the present work, microbial species are isolated from different sources such as cooking oil, grease and petroleum products. Two bacterial species such as Sphingomonas, Pseudomonas aeruginosa and three fungal species such as Aspergillus niger, Aspergillus flavus and one unidentified fungal species were isolated from the sources were used for the degradation of polyethylene plastic samples (black and white).

Results: Sphingomonas indicated 56% (black) and 31% (white) degradation of polyethylene plastic. Unidentified fungal species also indicated 64% (black) and 45% (white) degradation of polyethylene plastic. During the degradation, pH altered from 7 to 8. SEM analysis indicated the presence of appreciable surface erosions, fading, cracks and extensive roughening of the surface with pit formation.

Conclusion: Sequence analysis of Sphinogomonas species was done in comparison with the similar known bacterial species and the phylogenetic tree was generated based on the sequence analysis.

Keywords: Biodegradation, polyethylene, Aspergillus niger, Aspergillus flavus, Pseudomonas aeruginus, SEM analysis, sequence.

[1]
Scott G. Photo-biodegradable plastics: Their role in the protection of the environment. Polym Degrad Stabil 1990; 29(1): 135-54.
[2]
Mueller RJ. Biological degradation of synthetic polyesters-enzymes as potential catalysts for polyester recycling. Process Biochem 2006; 41(10): 2124-8.
[3]
Albertsson AC, Karlsson S. The influence of biotic and abiotic environments on the degradation of polyethylene. Prog Polym Sci 1990; 15(2): 177-92.
[4]
Urbanek AK, Rymowicz W, Mironczuk AM. Degradation of plastics and plastic-degrading bacteria in cold marine habitats. Appl Microbiol Biotechnol 2018; 102(18): 7669-78.
[5]
Gu JD, Ford TE, Mitton DB, Mitchell R. Microbial Degradation and Deterioration of Polymeric Materials.In: Review, The Uhlig Corrosion Handbook. 2nd ed. New York: Wiley 2000.
[6]
Huang SJ, Roby MS, Macri CA, Cameron JA. The effects of structure and morphology on the degradation of polymers with multiple groups. In: Vert M, Ed. Biodegradable Polymers and Plastic. London: Royal Soc Chem 1992.
[7]
Glass JE, Swift G. Agricultural and synthetic polymers, biodegradation and utilization, ACS Symposium Series, American Chemical Society. Nucleic Acids Res 1989; 433(1):105-110.
[8]
Cruz-Pinto JJC, Carvalho MES, Ferreira JFA. The kinetics and mechanism of polyethylene photo-oxidation. Angew Makromol Chem 1994; 216(1): 113-33.
[9]
Albertsson AC, Barenstedt C, Karlsson S. Abiotic degradation products from enhanced environmentally degradable polyethylene. Acta Polym 1994; 45(2): 97-103.
[10]
Priya T, Adria H, Salman A, Siddiqui MH, Sayeed U, Khan MKA. Role of microbes in degradation of synthetic plastics and manufacture of bioplastics. J Chem Pharm Res 2016; 8(3): 211-6.
[11]
Kandler O, Weiss N. Regular, Non-Sporing Gram-Positive Rods Bergey’s Manual of Systematic Bacteriology. Baltimore: Williams and Wilkins 1986; pp. 1208-034.
[12]
Robert C. Edgar. Muscle: Multiple sequence alignment with high accuracy and high throughput. Nucleic Acids Res 2004; 32(5): 1792-7.
[13]
Dereeper A, Guignon V, Blanc G, et al. Phylogeny fr: Robust phylogenetic analysis for the non-specialist. Nucleic Acids Res 2008; 36(suppl_2): 465-469.
[14]
Sowmya HV. Biodegradation of polyethylene by Bacillus cereu. Adv Poly Sci Technol Int J 2014; 4(2): 28-32.


Rights & PermissionsPrintExport Cite as

Article Details

VOLUME: 13
ISSUE: 1
Year: 2020
Page: [29 - 40]
Pages: 12
DOI: 10.2174/2405520412666190725114137
Price: $65

Article Metrics

PDF: 10
HTML: 3
EPUB: 1
PRC: 1