PMID- 37059038
OWN - NLM
STAT- MEDLINE
DCOM- 20230428
LR  - 20230428
IS  - 1879-2456 (Electronic)
IS  - 0956-053X (Linking)
VI  - 164
DP  - 2023 Jun 1
TI  - Insights into the degradation of high-density polyethylene microplastics using 
      microbial strains: Effect of process parameters, degradation kinetics and 
      modeling.
PG  - 143-153
LID - S0956-053X(23)00278-7 [pii]
LID - 10.1016/j.wasman.2023.04.002 [doi]
AB  - The extensive distribution of microplastics and their abundance around the world 
      has raised a global concern because of the lack of proper disposal channels as 
      well as poor knowledge of their implications on human health. Sustainable 
      remediation techniques are required owing to the absence of proper disposal 
      methods. The present study explores the deterioration process of high-density 
      polyethylene (HDPE) microplastics using various microbes along with the kinetics 
      and modeling of the process using multiple non-linear regression models. Ten 
      different microbial strains were used for the degradation of microplastics for a 
      period of 30 days. Effect of process parameters on the degradation process was 
      studied with the selected five microbial strains that presented the best 
      degradation results. The reproducibility and efficacy of the process were tested 
      for an extended period of 90 days. Fourier-transform infrared spectroscopy (FTIR) 
      and field emission-scanning electron microscopy (FE-SEM) were used for the 
      analysis of microplastics. Polymer reduction and half-life were evaluated. 
      Pseudomonas putida achieved the maximum degradation efficiency of 12.07% followed 
      by Rhodococcus ruber (11.36%), Pseudomonas stutzeri (8.28%), Bacillus cereus 
      (8.26%), and Brevibacillus borstelensis (8.02%) after 90 days. Out of 14 models 
      tested, 5 were found capable of modeling the process kinetics and based on 
      simplicity and statistical data, Modified Michaelis-Menten model (F8; R(2) = 
      0.97) was selected as superior to others. This study successfully establishes the 
      potential of bioremediation of microplastics as the viable process.
CI  - Copyright (c) 2023 Elsevier Ltd. All rights reserved.
FAU - Hooda, Sanjeevani
AU  - Hooda S
AD  - Department of Chemical Engineering, Indian Institute of Technology Roorkee, 
      Roorkee 247667, Uttarakhand, India.
FAU - Annu
AU  - Annu
AD  - Department of Chemical Engineering, Indian Institute of Technology Roorkee, 
      Roorkee 247667, Uttarakhand, India.
FAU - Mondal, Prasenjit
AU  - Mondal P
AD  - Department of Chemical Engineering, Indian Institute of Technology Roorkee, 
      Roorkee 247667, Uttarakhand, India. Electronic address: 
      prasenjit.mondal@ch.iitr.ac.in.
LA  - eng
PT  - Journal Article
DEP - 20230412
PL  - United States
TA  - Waste Manag
JT  - Waste management (New York, N.Y.)
JID - 9884362
RN  - 0 (Microplastics)
RN  - 9002-88-4 (Polyethylene)
RN  - 0 (Plastics)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Humans
MH  - *Microplastics
MH  - Polyethylene/chemistry
MH  - Plastics
MH  - Reproducibility of Results
MH  - Kinetics
MH  - *Water Pollutants, Chemical/analysis
MH  - Spectroscopy, Fourier Transform Infrared
OTO - NOTNLM
OT  - Biodegradation process
OT  - Kinetic study
OT  - Microbial remediation
OT  - Microplastics
OT  - Non-linear regression models
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/04/15 06:00
MHDA- 2023/04/28 06:41
CRDT- 2023/04/14 18:10
PHST- 2022/11/30 00:00 [received]
PHST- 2023/03/27 00:00 [revised]
PHST- 2023/04/02 00:00 [accepted]
PHST- 2023/04/28 06:41 [medline]
PHST- 2023/04/15 06:00 [pubmed]
PHST- 2023/04/14 18:10 [entrez]
AID - S0956-053X(23)00278-7 [pii]
AID - 10.1016/j.wasman.2023.04.002 [doi]
PST - ppublish
SO  - Waste Manag. 2023 Jun 1;164:143-153. doi: 10.1016/j.wasman.2023.04.002. Epub 2023 
      Apr 12.