Comparative Study on Different Remediation Strategies Applied in Petroleum-Contaminated Soils

International Journal of Environmental Research and Public Health
Jia-Qi CuiJian-Ping Wen

Abstract

Due to the increasing pollution by petroleum hydrocarbons (PHs), it is an important task to develop eco-friendly and highly efficient methods for remediating petroleum-contaminated soils. In this study, bioremediation technology was applied to remediate PHs contaminated soils, and the bacterial community structure and physicochemical characteristics of the soil treated using different bioremediation regimens were analyzed. Compared with the control condition (S0), the PHs removal efficiency of biostimulation (S2) and bioaugmentation (S3) was increased significantly. Combined biostimulation with bioaugmentation (S4) had the highest PHs removal efficiency, up to 60.14 ± 4.12%. Among all the selected remediation strategies (S1-S4, S1: soil moisture content: 25-30%), the bacterial alpha-diversity was higher than in S0. The genera Acinetobacter, Escherichia-Shigella, Bacteroides, Microbacterium, and Parabacteroides were found to greatly contribute to PHs' degradation. In the group S4, the PH-degraders and soil enzyme activity were higher than in the other remediation regimens, and these indices gradually decreased in the mid-to-later periods of all remediation tests. Additionally, the abundance of alkB and nah genes was increased by...Continue Reading

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Citations

Feb 20, 2021·Environmental Science and Pollution Research International·Macdonald Ogorm MafianaShi-Weng Li
Mar 7, 2021·International Journal of Environmental Research and Public Health·Khalid SayedNaresh Kumar Sharma
Aug 17, 2021·Ecotoxicology and Environmental Safety·Bingchen WangHuihui Wang

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Datasets Mentioned

BETA
ERS2984634-ERS2984648

Methods Mentioned

BETA
PCR
PCA

Software Mentioned

mothur
Quantitative Insights into Microbial Ecology ( QIIME )
SparCC
UCLUST
Python

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