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HERO ID
5018074
Reference Type
Journal Article
Title
Application of encapsulated magnesium peroxide (MgO2) nanoparticles in permeable reactive barrier (PRB) for naphthalene and toluene bioremediation from groundwater
Author(s)
Gholami, F; Mosmeri, H; Shavandi, M; Dastgheib, SMM; Amoozegar, MA
Year
2019
Is Peer Reviewed?
1
Journal
Science of the Total Environment
ISSN:
0048-9697
EISSN:
1879-1026
Volume
655
Page Numbers
633-640
Language
English
PMID
30476844
DOI
10.1016/j.scitotenv.2018.11.253
Web of Science Id
WOS:000455034600064
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056905824&doi=10.1016%2fj.scitotenv.2018.11.253&partnerID=40&md5=a6d9089b2d6c5523957fff96431ff07f
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Abstract
One of the challenges in the petroleum hydrocarbon contaminated groundwater remediation by oxygen releasing compounds (ORCs) is to identify the remediation mechanism and determine the impact of ORCs on the environment and the intrinsic groundwater microorganisms. In this research, the application of encapsulated magnesium peroxide (MgO2) nanoparticles in the permeable reactive barrier (PRB) for bioremediation of the groundwater contaminated by toluene and naphthalene was studied in the continuous flow sand-packed plexiglass columns within 50 d experiments. For the biodiversity studies, next generation sequencing (NGS) of the 16S rRNA gene was applied. The results showed that naphthalene was metabolized (within 20 days) faster than toluene (after 30 days) by microorganisms of the aqueous phase. By comparing the contaminant removal in the biotic (which resulted in the complete contaminant removal) and abiotic (around 32% removal for naphthalene and 36% for toluene after 50 d) conditions, the significant role of microorganisms on the decontamination process was proved. Furthermore, the attached microbial communities on the porous media were visualized by scanning electron microscopy (SEM). Microbial community structure analysis by NGS technique revealed that the microbial species which were able to degrade toluene and naphthalene such as P. putida and P. mendocina respectively were stimulated by addition of MgO2 nanoparticles. The presented study resulted in a momentous insight into the application of MgO2 nanoparticles in the hydrocarbon compounds removal from groundwater.
Keywords
Bioremediation; Groundwater treatment; Magnesium peroxide; Naphthalene remediation; Toluene removal
Tags
IRIS
•
Naphthalene
Database Searches
PubMed
Combined data set
Data set for title/abstract screening
Excluded - PECO criteria not met (TIAB)
Feb 2019 Update
PubMed
•
Naphthalene (2021 Evidence mapping publication)
Database Searches
PubMed
Combined data set
Data set for title/abstract screening
Excluded – PECO criteria not met
Feb 2019 Update
PubMed
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