Biodegradation of high concentrations of petroleum compounds by using indigenous bacteria isolated from petroleum hydrocarbons-rich sludge: Effective scale-up from liquid medium to composting process

Koolivand, Ali; Abtahi, Hamid; Parhamfar, Maryam; Didehdar, Mojtaba; Saeedi, Reza; Fahimirad, Shohreh

doi:10.1016/j.jenvman.2019.06.129

Cited by 38 publications

(9 citation statements)

References 37 publications

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“…The idea is based on the isolation of potent degraders from native microbial populations [60], their subsequent cultivation under laboratory conditions and re-introduction into the area of their origin. Recent reports confirm the feasibility of this approach [34,36]. The impact of autochthonous bioaugmentation can be further improved by the selection of most potent degraders based on metagenomics profiling [52], although it should also be mentioned that improvement of hydrocarbon removal efficiency may also occur after the introduction of strains which do not directly participate in the biodegradation process [35].…”

Section: Molecules 2020 XX X For Peer Review 12 Of 18mentioning

confidence: 92%

Microbial Degradation of Hydrocarbons—Basic Principles for Bioremediation: A Review

et al. 2020

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Crude oil-derived hydrocarbons constitute the largest group of environmental pollutants worldwide. The number of reports concerning their toxicity and emphasizing the ultimate need to remove them from marine and soil environments confirms the unceasing interest of scientists in this field. Among the various techniques used for clean-up actions, bioremediation seems to be the most acceptable and economically justified. Analysis of recent reports regarding unsuccessful bioremediation attempts indicates that there is a need to highlight the fundamental aspects of hydrocarbon microbiology in a clear and concise manner. Therefore, in this review, we would like to elucidate some crucial, but often overlooked, factors. First, the formation of crude oil and abundance of naturally occurring hydrocarbons is presented and compared with bacterial ability to not only survive but also to utilize such compounds as an attractive energy source. Then, the significance of nutrient limitation on biomass growth is underlined on the example of a specially designed experiment and discussed in context of bioremediation efficiency. Next, the formation of aerobic and anaerobic conditions, as well as the role of surfactants for maintaining appropriate C:N:P ratio during initial stages of biodegradation is explained. Finally, a summary of recent scientific reports focused on the removal of hydrocarbon contaminants using bioaugmentation, biostimulation and introduction of surfactants, as well as biosurfactants, is presented. This review was designed to be a comprehensive source of knowledge regarding the unique aspects of hydrocarbon microbiology that may be useful for planning future biodegradation experiments. In addition, it is a starting point for wider debate regarding the limitations and possible improvements of currently employed bioremediation strategies.

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Section: Molecules 2020 XX X For Peer Review 12 Of 18mentioning

confidence: 92%

Microbial Degradation of Hydrocarbons—Basic Principles for Bioremediation: A Review

et al. 2020

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“…Bioremediation refers to the use of living organisms or their enzymes to detoxify or restore contaminated sites, often by directing the natural capabilities of microbes toward environmental pollutants (Baba et al, 2016). Microorganisms have proven valuable in the remediation of environmental pollutants and various waste substances such as heavy metals (Kang et al, 2016;Igiri et al, 2018), polychlorinated biphenyls (PCBs) (Sharma J.K. et al, 2018;Elangovan et al, 2019) and even petroleum (Varjani, 2017;Koolivand et al, 2019). With respect to the contamination of marine and terrestrial environments by plastics, microplastics and their residues, it is vital to establish an efficient and carefully thought-out bioremediation strategy.…”

Section: Future Perspectives Bioremediationmentioning

confidence: 99%

Microbial Polyethylene Terephthalate Hydrolases: Current and Future Perspectives

2020

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Plastic has rapidly transformed our world, with many aspects of human life now relying on a variety of plastic materials. Biological plastic degradation, which employs microorganisms and their degradative enzymes, has emerged as one way to address the unforeseen consequences of the waste streams that have resulted from mass plastic production. The focus of this review is microbial hydrolase enzymes which have been found to act on polyethylene terephthalate (PET) plastic. The best characterized examples are discussed together with the use of genomic and protein engineering technologies to obtain PET hydrolase enzymes for different applications. In addition, the obstacles which are currently limiting the development of efficient PET bioprocessing are presented. By continuing to study the possible mechanisms and the structural elements of key enzymes involved in microbial PET hydrolysis, and by assessing the ability of PET hydrolase enzymes to work under practical conditions, this research will help inform large-scale waste management operations. Finally, the contribution of microbial PET hydrolases in creating a potential circular PET economy will be explored. This review combines the current knowledge on enzymatic PET processing with proposed strategies for optimization and use, to help clarify the next steps in addressing pollution by PET and other plastics.

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“…Phenotypic characterization of the two isolates was carried out including gram staining, catalase, oxidase, urease, citrate, H2S production, indole production, nitrate reduction, and triple sugar iron were performed. Molecular identification was done by the 16S rRNA gene amplification and sequencing based on the standard procedure described in the published papers (Farzadkia et al, 2019;Koolivand et al, 2019b;Koolivand et al, 2019c).…”

Section: Isolation and Identification Of The Hdbmentioning

confidence: 99%

Bioremediation of petroleum hydrocarbons by vermicomposting process bioaugmentated with indigenous bacterial consortium isolated from petroleum oily sludge

Koolivand

Saeedi

Coulon

et al. 2020

Ecotoxicology and Environmental Safety

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Finding a sound ecological-based approach for the removal of petroleum hydrocarbons (PHCs) from petroleum oily sludge (POS) generated in oil refinery plants is still a challenge. This study investigated the removal of total petroleum hydrocarbons (TPHs) using bioaugmentated composting (BC) by hydrocarbon-degrading bacteria (HDB) and vermicomposting (VC) by Eisenia fetida, individually and in combination (BCVC). After isolating two native bacterial strains from POS prepared from an oil refinery plant in Iran, the degradation capability of their consortium was initially assessed in mineral Bushnell-Haas medium (MBHM). Then, the biodegradation rates of POS in the BC, VC, and BCVC treatments containing different concentrations of TPHs (5, 10, and 20 g/kg) were determined by measuring TPHs before and after the biodegradation. The results showed that the consortium degraded 20-62% of TPHs contents of Kerosene (1-5%) in the MBHM after 7 days. After 12 weeks, the TPHs removal percentages in the BC, VC, and BCVC treatments were respectively found to be 81-83, 31-49, and 85-91 indicating the synergistic effect of bacteria and worms in bioremediation of POS. The PHCs biodegradation in the BC, VC, and BCVC experiments was fitted to 1st order model kinetics. The results of toxicity tests indicated that the values of the no observed lethal concentration (NOLC) and median lethal concentration (LC50) of TPHs were 2-5 and 14.64 g/kg, respectively after 28 days of earthworm exposure. Morphological impairments such as swelling, coiling, and curling were observed when TPHs concentration was even lower than NOLC. The study verified the effectiveness of vermicomposting bioaugmentated with the indigenous bacterial consortium for POS bioremediation.

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Biodegradation of high concentrations of petroleum compounds by using indigenous bacteria isolated from petroleum hydrocarbons-rich sludge: Effective scale-up from liquid medium to composting process

Cited by 38 publications

References 37 publications

Microbial Degradation of Hydrocarbons—Basic Principles for Bioremediation: A Review

Microbial Degradation of Hydrocarbons—Basic Principles for Bioremediation: A Review

Microbial Polyethylene Terephthalate Hydrolases: Current and Future Perspectives

Bioremediation of petroleum hydrocarbons by vermicomposting process bioaugmentated with indigenous bacterial consortium isolated from petroleum oily sludge

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