Bioaugmentation-assisted bioremediation and biodegradation mechanisms for PCB in contaminated environments: A review on sustainable clean-up technologies

Hassan, Auwalu; Hamid, Fauziah Shahul; Pariatamby, Agamuthu; Suhaimi, Nurul Shamsinah M.; Razali, Noor Maiza binti M.; Ling, Kimberly N.H.; Mohan, Priya

doi:10.1016/j.jece.2023.110055

Cited by 12 publications

(2 citation statements)

References 468 publications

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“…Microorganisms that can degrade phenol include bacteria belonging to the genera -Pseudomonas, Alcaligenes, and Sphingomonas and fungal species such as Phanerochaete chrysosporium and Trametes versicolor (El conditions support efficient degradation, as oxygen is a critical electron acceptor. Anaerobic conditions can impede degradation efficiency due to limited oxygen availability (Yang et al, 2018;Hassan et al, 2023). According to Liu et al (2021), aerobic and anaerobic microorganisms are the two primar y categ ories of microorg anisms responsible for phenol breakdown.…”

Section: Characterization Of Phenol-degrading Microorganismsmentioning

confidence: 99%

Bacterial degradation of phenol: a review of the current state of knowledge

Adetitun,

Tomilayo

2024

ijs

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Phenol is a toxic and recalcitrant contaminant widely used in various industries, including petrochemical, pharmaceutical, and agrochemical industries. Bacterial degradation of phenol is a promising method for treating phenol-contaminated wastewater. The biodegradation of phenol by bacteria can effectively remove it from the environment, making it a valuable alternative to traditional chemical treatment methods. This review summarizes the current knowledge on the bacterial biodegradation of phenol, including those in the petrochemical, pharmaceutical, and agrochemical sectors, the metabolic pathways involved in phenol degradation, and the factors that influence the efficiency of phenol biodegradation. This paper also discusses the challenges and limitations of using bacteria for the biodegradation of phenol, including the need for further research to improve the efficiency and sustainability of the process. The outcome of this review demonstrates that bacterial biodegradation is a promising and effective method for treating phenol-contaminated wastewater and provides a foundation for future research to improve the efficiency and continuous use of this process.

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Section: Characterization Of Phenol-degrading Microorganismsmentioning

confidence: 99%

Bacterial degradation of phenol: a review of the current state of knowledge

Adetitun,

Tomilayo

2024

ijs

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“…There is evidence of organisms and microorganisms that, due to their metabolic capabilities, can tolerate and/or transform metals for their benefit, accumulating them within themselves [12]. In this sense, microorganisms or their metabolic products have been employed to transform toxic compounds into less harmful forms, thus tackling environmental damage [13,14].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Tolerance of Microorganisms Isolated from Coastal Marine Sediments and Their Lead Removal Potential

Alvarado-Campo,

Quintero,

Cuadrado-Cano

et al. 2023

Microorganisms

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In this study, 338 microorganisms, comprising 271 bacteria and 67 fungi, were isolated from sediment samples collected from underexplored Pacific and Caribbean regions of Colombia. Screening trials were conducted on selected strains (n = 276) to assess their tolerance to cadmium (Cd2+), lead (Pb2+), and zinc (Zn2+), leading to the identification of six bacteria capable of withstanding 750 mg·L−1 of each heavy metal ion. Three promising microorganisms, identified as Enterobacter sp. INV PRT213, Pseudomonas sp. INV PRT215, and Stenotrophomonas sp. INV PRT216 were selected for lead removal experiments using LB broth medium supplemented with 400 mg·L−1 Pb2+. Among these, Pseudomonas sp. INV PRT215 exhibited significant potential, removing 49% of initial Pb2+ after 240 min of exposure (16.7 g wet biomass·L−1, pH 5, 30 °C). Infrared spectra of Pb-exposed biomass showed changes in functional groups, including carbonyl groups of amides, carboxylate, phosphate, hydroxyl, and amine groups, compared to the not-exposed control. These changes suggested interactions between the metal and functional groups in the biomass. The findings of this study highlight the potential of microorganisms derived from coastal marine environments as promising candidates for future applications in bioremediation of polluted environments contaminated with heavy metals.

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