Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 432, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2022.128682
Keywords
Biodegradation; Polyethylene; Nitric oxide; Comamonas; Delftia; Stenotrophomonas
Categories
Funding
- National Council for Scientific and Technological Development-CNPq [MCTI/CNPq 443075/2014-0]
- Coordination for the Improvement of Higher Education Personnel-CAPES [PROEX 2016-2022, PROJ-CAPESPRINT1039951P]
- State Funding Agency of Federal District-FAPDF [0193.001727/2017]
Ask authors/readers for more resources
Polyethylene accumulation in natural environments poses a severe threat to wildlife and human health. This study uncovers the importance of nitrogen metabolism in the biodegradation of polyethylene, providing a new sustainable solution for its remediation.
Polyethylene (PE) is the most widely used plastic and its accumulation on natural environments has reached alarming levels causing severe damage to wildlife and human health. Despite the significance of this global issue, little is known about specific metabolic mechanisms behind PE biodegradation-a promising and sustainable remediation method. Herein, we describe a novel role of nitrogen metabolism in the fragmentation and oxidation of PE mediated by biological production of NOx in three PE-degrading strains of Comamonas, Delftia, and Stenotrophomonas. Resultant nitrated PE fragments are assimilated and then metabolized by these bacteria in a process assisted by nitronate monooxygenases and nitroreductases to support microbial growth. Due to the conservation of nitrogen metabolism genes, we anticipate that this oxidative mechanism is potentially shared by other nitrifier and denitrifier microbes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available