Review on bioremediation technologies of polycyclic aromatic hydrocarbons (PAHs) from soil: Mechanisms and future perspective

Ansari, Fariyal; Momina,; Ahmad, Anees; Rafatullah, Mohd

doi:10.1016/j.ibiod.2023.105582

Cited by 44 publications

(8 citation statements)

References 220 publications

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“…This remediation method utilizes a biodegradation process to remove contaminants from the environment, thereby minimizing environmental risks (Seagren, 2024). For various types of inorganic metals and organic pollutants such as polycyclic aromatic hydrocarbons (PAHs) in the contaminated soil of the target range, common bioremediation methods include phytoremediation and microbial remediation techniques (Ni et al, 2023a;Ansari et al, 2023).…”

Section: Bioremediationmentioning

confidence: 99%

Contamination and remediation of contaminated firing ranges—an overview

Zhu,

Che,

et al. 2024

Front. Environ. Sci.

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Land and groundwater resources are fundamental pillars of sustainable human development. The negligent abandonment of ammunition and its fragments during range activities can result in severe contamination of range sites, thereby posing a significant risk to both the ecological environment and human health. Nevertheless, numerous uncertainties persist regarding the comprehension of range contaminated sites. In this study, the literature on the range of contaminated sites decommissioned after 2000 was systematically examined to consolidate basic information related to these sites, such as contaminant types, contamination status, and remediation measures. Considerable attention is devoted to investigating the advancement of diverse techniques, such as phytoremediation, chemical leaching, and solidification/stabilization, to remediate polluted areas within decommissioned firing ranges. Among the various types of remediation means, physical remediation and chemical remediation have higher remediation efficiency, but generally have higher costs and are prone to secondary pollution. Bioremediation is low cost and environmentally friendly, but has a long restoration cycle. The choice of remediation method should be based on actual needs. Additionally, this study puts forth prospective avenues for future research. Ultimately, this endeavor aims to attract the interest of scholars toward the remediation of contaminated sites within firing ranges, thereby making a valuable contribution to both human wellbeing and sustainable progress.

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Section: Bioremediationmentioning

confidence: 99%

Contamination and remediation of contaminated firing ranges—an overview

Zhu,

Che,

et al. 2024

Front. Environ. Sci.

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“…Several parameters such as physical, chemical, and ecological characteristics of the polluted sites should be checked for successful achievement of bioremediation ( Gu, 2021 ). Physicochemical and biological methods are used for remediation of sites contaminated with HMs, both of which have their own pros and cons while use of microorganisms as a biological tool is the emerging technology for degradation and remediation of pollutants at contaminated sites ( Gu, 2018 ; Ansari et al, 2023 ). Microbial bioremediation is a simple, economic, ecofriendly, inexpensive, and efficient approach done for removal and detoxification of toxic pollutants using native microorganisms ( Kumar Mishra, 2017 ; Spain et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Rhizospheric bacteria: the key to sustainable heavy metal detoxification strategies

et al. 2023

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The increasing rate of industrialization, anthropogenic, and geological activities have expedited the release of heavy metals (HMs) at higher concentration in environment. HM contamination resulting due to its persistent nature, injudicious use poses a potential threat by causing metal toxicities in humans and animals as well as severe damage to aquatic organisms. Bioremediation is an emerging and reliable solution for mitigation of these contaminants using rhizospheric microorganisms in an environmentally safe manner. The strategies are based on exploiting microbial metabolism and various approaches developed by plant growth promoting bacteria (PGPB) to minimize the toxicity concentration of HM at optimum levels for the environmental clean-up. Rhizospheric bacteria are employed for significant growth of plants in soil contaminated with HM. Exploitation of bacteria possessing plant-beneficial traits as well as metal detoxifying property is an economical and promising approach for bioremediation of HM. Microbial cells exhibit different mechanisms of HM resistance such as active transport, extra cellular barrier, extracellular and intracellular sequestration, and reduction of HM. Tolerance of HM in microorganisms may be chromosomal or plasmid originated. Proteins such as MerT and MerA of mer operon and czcCBA, ArsR, ArsA, ArsD, ArsB, and ArsC genes are responsible for metal detoxification in bacterial cell. This review gives insights about the potential of rhizospheric bacteria in HM removal from various polluted areas. In addition, it also gives deep insights about different mechanism of action expressed by microorganisms for HM detoxification. The dual-purpose use of biological agent as plant growth enhancement and remediation of HM contaminated site is the most significant future prospect of this article.

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“…Basic molecular biology and engineering principles are used in preliminary procedures that provide an imperfect solution to metabolic mechanisms. 16…”

Section: Introductionmentioning

confidence: 99%