Microbial Bioremediation Techniques for Polycyclic Aromatic Hydrocarbon (PAHs)—a Review

Ismail, Nor Asyikin; Kasmuri, Norhafezah; Hamzah, N.

doi:10.1007/s11270-022-05598-6

Cited by 33 publications

(8 citation statements)

References 185 publications

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“…Enzymes play an important role in the IET pathway, and several studies have proven that they mediate nearly all reactions in organisms ( Zumstein and Helbling, 2019 ). In the process of detoxification of toxic pollutants by EAMs, a complete IET pathway often contains a variety of enzymes, such as monooxygenase, dioxygenase, and dehydrogenase, which may be needed in the detoxification of complex organics such as polycyclic aromatic hydrocarbons (PAHs) by EAMs ( Ismail et al, 2022 ). The O 2 content in the environment affects the detoxification of toxic pollutants by EAMs ( Alegbeleye et al, 2017 ).…”

Section: Detoxification Mechanisms Of Electroactive Microorganismsmentioning

confidence: 99%

“…The O 2 content in the environment affects the detoxification of toxic pollutants by EAMs ( Alegbeleye et al, 2017 ). The first step in the detoxification of PAHs by EAMs (e.g., Pseudomonas aeruginosa and Ochrobactrum anthropi ) under aerobic conditions is to reduce the number of benzene rings, which occurs in two ways: through monooxygenase and dioxygenase ( Logan et al, 2019 ; Ismail et al, 2022 ). Monooxygenase combines an oxygen atom into PAHs to form oxidized aromatic hydrocarbons, and then hydrates with epoxidase to form trans -dihydrodiol or spontaneously isomerizes to form phenols ( Fuchs et al, 2011 ).…”

Section: Detoxification Mechanisms Of Electroactive Microorganismsmentioning

confidence: 99%

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Detoxification mechanisms of electroactive microorganisms under toxicity stress: A review

Feng

Chen

et al. 2022

Front. Microbiol.

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Remediation of environmental toxic pollutants has attracted extensive attention in recent years. Microbial bioremediation has been an important technology for removing toxic pollutants. However, microbial activity is also susceptible to toxicity stress in the process of intracellular detoxification, which significantly reduces microbial activity. Electroactive microorganisms (EAMs) can detoxify toxic pollutants extracellularly to a certain extent, which is related to their unique extracellular electron transfer (EET) function. In this review, the extracellular and intracellular aspects of the EAMs’ detoxification mechanisms are explored separately. Additionally, various strategies for enhancing the effect of extracellular detoxification are discussed. Finally, future research directions are proposed based on the bottlenecks encountered in the current studies. This review can contribute to the development of toxic pollutants remediation technologies based on EAMs, and provide theoretical and technical support for future practical engineering applications.

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Section: Detoxification Mechanisms Of Electroactive Microorganismsmentioning

confidence: 99%

Section: Detoxification Mechanisms Of Electroactive Microorganismsmentioning

confidence: 99%

Detoxification mechanisms of electroactive microorganisms under toxicity stress: A review

Feng

Chen

et al. 2022

Front. Microbiol.

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“…Owing to the chemical stability of PHs, their hydrophobicity and their recalcitrance to microbial degradation, spilled oil may damage the biological and physicochemical properties of the petroleum-polluted soil. Petroleum hydrocarbons cause the alteration of soil biological properties, which affects microbial diversity and enzymatic activities as well as physicochemical characteristics [ 3 , 4 ]. Certain essential soil functions may be lost due to the high toxicity of such persistent aromatic hydrocarbon structures.…”

Section: Introductionmentioning

confidence: 99%

Petroleum-Degrading Fungal Isolates for the Treatment of Soil Microcosms

Daâssi

Almaghrabi

2023

Microorganisms

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The main purpose of this study was to degrade total petroleum hydrocarbons (TPHs) from contaminated soil in batch microcosm reactors. Native soil fungi isolated from the same petroleum-polluted soil and ligninolytic fungal strains were screened and applied in the treatment of soil-contaminated microcosms in aerobic conditions. The bioaugmentation processes were carried out using selected hydrocarbonoclastic fungal strains in mono or co-cultures. Results demonstrated the petroleum-degrading potential of six fungal isolates, namely KBR1 and KBR8 (indigenous) and KBR1-1, KB4, KB2 and LB3 (exogenous). Based on the molecular and phylogenetic analysis, KBR1 and KB8 were identified as Aspergillus niger [MW699896] and tubingensis [MW699895], while KBR1-1, KB4, KB2 and LB3 were affiliated with the genera Syncephalastrum sp. [MZ817958], Paecilomyces formosus [MW699897], Fusarium chlamydosporum [MZ817957] and Coniochaeta sp. [MW699893], respectively. The highest rate of TPH degradation was recorded in soil microcosm treatments (SMT) after 60 days by inoculation with Paecilomyces formosus 97 ± 2.54%, followed by bioaugmentation with the native strain Aspergillus niger (92 ± 1.83%) and then by the fungal consortium (84 ± 2.21%). The statistical analysis of the results showed significant differences.

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“…Bioremediation is a widely adopted solution to eradicate petroleum hydrocarbons (PHCs) (Ismail et al, 2022;Lang et al, 2016), chlorinated aliphatic hydrocarbons (CAHs) (Essabri et al, 2019) or metal(loid)s (Carlos et al, 2016) from polluted waters. In situ bioremediation (ISB) is an application of bioremediation that relies on the natural microbial metabolic activities occurring in a polluted soil (Madsen et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

“…In situ bioremediation (ISB) is an application of bioremediation that relies on the natural microbial metabolic activities occurring in a polluted soil (Madsen et al, 1991). ISB aims at achieving an effective aquifer clean-up (Ismail et al, 2022;Suthersan et al, 2017) by means of the mineralization of organic compounds, organohalide respiration (OHR), redox reactions or other processes. Biostimulation aims at enhancing ISB by maximizing the activity of native microorganisms in a soil (Thomas & Ward, 1989).…”

Section: Introductionmentioning

confidence: 99%

Piloting Activities for the Design of a Large-scale Biobarrier Involving In Situ Sequential Anaerobic–aerobic Bioremediation of Organochlorides and Hydrocarbons

Casiraghi

Pedretti

Beretta

et al. 2022

Water Air Soil Pollut

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In situ bioremediation (ISB) is a widely accepted method for eradicating petroleum hydrocarbons (PHCs) and chlorinated aliphatic hydrocarbons (CAHs) from contaminated aquifers. To achieve full removal of all toxic compounds that originated from microbial degradation, sequential anaerobic/aerobic bioremediation systems are recommended. While several works based on laboratory analyses targeting sequential bioremediation have been documented, examples of sequential ISB are limited. The purpose of this study is to report and analyze the results obtained from the multiscale characterization activities propaedeutic to the construction of Italy’s largest (> 400 m long) sequential ISB system. The rich wealth of information produced during this study provides a useful example that can be followed for the construction of new sequential ISBs. The system was set up to remediate a solute plume containing PHCs and CAHs in an alluvial aquifer in Italy. Microcosm experiments were carried out to determine the biodegradation potential under anaerobic and aerobic conditions. In situ tests were performed by installing two 40-m-long pilot biobarriers for sequential anaerobic and aerobic degradation intercepting part of the contamination plume. These experiments pointed out the need of adding biostimulating compounds to accelerate the biodegradation process, under both aerobic and anaerobic conditions. In situ tests showed removal efficiencies of up to 95 and 99% for total CAHs and PHCs, respectively, proving the feasibility of the full-scale ISB system. Apparent discrepancies between laboratory and in situ tests can be ascribed to scale effects and aquifer heterogeneities.

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Microbial Bioremediation Techniques for Polycyclic Aromatic Hydrocarbon (PAHs)—a Review

Cited by 33 publications

References 185 publications

Detoxification mechanisms of electroactive microorganisms under toxicity stress: A review

Detoxification mechanisms of electroactive microorganisms under toxicity stress: A review

Petroleum-Degrading Fungal Isolates for the Treatment of Soil Microcosms

Piloting Activities for the Design of a Large-scale Biobarrier Involving In Situ Sequential Anaerobic–aerobic Bioremediation of Organochlorides and Hydrocarbons

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