Leading edges in bioremediation technologies for removal of petroleum hydrocarbons

Naeem, Urooj; Qazi, Muhammad Akram

doi:10.1007/s11356-019-06124-8

Cited by 74 publications

(15 citation statements)

References 68 publications

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“… 70 , reported that Pseudomonas species are the main biosurfactant producers in hydrocarbon-polluted environments. However, recent studies conducted by 71 ,found that marine microorganisms such as B. subtilis AS2, Bacillus licheniformis AS3, and Bacillus velezensis AS4 can also be found in this environment.…”

Section: Environmental Uses Of Biosurfactantsmentioning

confidence: 99%

Microbial biosurfactants: a review of recent environmental applications

et al. 2022

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Microbial biosurfactants are low-molecular-weight surface-active compounds of high industrial interest owing to their chemical properties and stability under several environmental conditions. The chemistry of a biosurfactant and its production cost are defined by the selection of the producer microorganism, type of substrate, and purification strategy. Recently, biosurfactants have been applied to solve or contribute to solving some environmental problems, with this being their main field of application. The most referenced studies are based on the bioremediation of contaminated soils with recalcitrant pollutants, such as hydrocarbons or heavy metals. In the case of heavy metals, biosurfactants function as chelating agents owing to their binding capacity. However, the mechanism by which biosurfactants typically act in an environmental field is focused on their ability to reduce the surface tension, thus facilitating the emulsification and solubilization of certain pollutants ( in-situ biostimulation and/or bioaugmentation). Moreover, despite the low toxicity of biosurfactants, they can also act as biocidal agents at certain doses, mainly at higher concentrations than their critical micellar concentration. More recently, biosurfactant production using alternative substrates, such as several types of organic waste and solid-state fermentation, has increased its applicability and research interest in a circular economy context. In this review, the most recent research publications on the use of biosurfactants in environmental applications as an alternative to conventional chemical surfactants are summarized and analyzed. Novel strategies using biosurfactants as agricultural and biocidal agents are also presented in this paper.

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Section: Environmental Uses Of Biosurfactantsmentioning

confidence: 99%

Microbial biosurfactants: a review of recent environmental applications

et al. 2022

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“…The environmental risks are considered to be the spillage of oil and petroleum components, due to the large volumes contained within structures and the hazards they pose to the marine environment and human health (Alexander et al, 2017;Bender et al, 2018). Additionally, the technology for removal and effective cleaning of hydrocarbons has been extensively researched and has well defined waste disposal management protocols (Akinpelu et al, 2019;Naeem & Qazi, 2020). As a result, there appears to be little understanding of the amount of NORM expected during decommissioning, especially within subsea infrastructure (pipelines, flow lines and well equipment) (McKay et al, 2020).…”

Section: Environmental Plans and Management Of Normmentioning

confidence: 99%

Ecotoxicological effects of decommissioning offshore petroleum infrastructure: A systematic review

MacIntosh

Dafforn

Penrose

et al. 2021

Critical Reviews in Environmental Science and Technology

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Successful decommissioning of subsea oil and gas infrastructure requires a safe and effective approach to assess and manage waste products. These products, often present as scale on internals of pipelines, include naturally occurring radioactive materials (NORM) and trace metals. Understanding the potential effects of these contaminants on marine fauna is crucial to managing global decommissioning. This review is composed of two aspects: 1) a systematic review was conducted to synthesize literature on all contaminants associated with decommissioned offshore structures and the effects of NORM contaminants on marine organisms; 2) a critical review of current environmental regulations for decommissioning and characterization of petroleum scale and NORM components. Studies defining the chemical and radiological contaminants associated with decommissioned structures were very limited. The main source of contaminants was identified from offshore platforms, with none from subsea structures. Only three studies measured variable chemical effects of radium to organisms from scale materials in subsea oil and gas infrastructure. No studies measured effects on organisms from other NORM, such as lead-210 and polonium-210. Currently, there are no international regulations on subsea pipeline closure, with NORM being underreported and not addressed in environmental impact assessments. This review highlights research gaps from environmental monitoring and characterization of NORM associated with decommissioned structures. Key recommendations for future research include characterizing NORM scale and assessing effects of scale to marine organisms through direct organism exposure experiments. This review emphasizes the need to incorporate ecotoxicology into environmental risk assessment for offshore petroleum decommissioning.

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“…Related studies have demonstrated that the quantitative addition of surfactants to contaminated soil is beneficial to desorption and conversion of PAHs by bacteria and fungi in the soil, and it improves the degradation efficiency. Furthermore, compared with PAHs with polyphenyl rings, it is easier for those with a low number of benzene rings to be absorbed and degraded [108][109][110][111]. High water content in the soil is conducive to the occurrence of aerobic degradation and its reactions.…”

Section: Influence Of External Factors On Phytomicrobial Remediation Of Pahs-contaminated Soilmentioning

confidence: 99%

Analysis of Factors Influencing Plant–Microbe Combined Remediation of Soil Contaminated by Polycyclic Aromatic Hydrocarbons

Zhao

Lyu

2021

Sustainability

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Polycyclic aromatic hydrocarbons (PAHs) are frequently detected in soil. Their biological toxicity and carcinogenic, teratogenic, and mutagenic effects pose a great threat to the ecological environment and human health. Firstly, the sources, physicochemical properties, and environmental hazards of PAHs are reviewed in this paper, and then their pollution status and different methods for their detection in soil are described in detail. The remediation technologies to treat pollution in the field and farmland are compared, and the technical status and factors influencing phytomicrobial remediation of PAHs in contaminated soil are evaluated in the most comprehensive way. The mechanisms of phytomicrobial remediation of PAHs-contaminated soil under different conditions are innovatively discussed. Additionally, the regulation mechanism of enzymes involved in plant and microbial degradation of PAHs in soils is studied. This is the first study on the regulation mechanism of degradation enzyme in a PAHs review. The aim of this paper is to review the pollution status, remediation technologies, mechanisms, and biodegradation actions of PAHs in soil. This review creatively provides reliable technical support for strengthening soil remediation and environmental management.

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Leading edges in bioremediation technologies for removal of petroleum hydrocarbons

Cited by 74 publications

References 68 publications

Microbial biosurfactants: a review of recent environmental applications

Microbial biosurfactants: a review of recent environmental applications

Ecotoxicological effects of decommissioning offshore petroleum infrastructure: A systematic review

Analysis of Factors Influencing Plant–Microbe Combined Remediation of Soil Contaminated by Polycyclic Aromatic Hydrocarbons

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