Immobilization of Rhodococcus qingshengii strain FF on the surface of polyethylene and its adsorption and biodegradation of mimic produced water

Nie, Hongyun; Nie, Minghua; Diwu, Zhenjun; Wang, Lei; Yan, Han; Bai, Xuerui

doi:10.1016/j.jhazmat.2020.124075

Cited by 9 publications

(4 citation statements)

References 26 publications

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“…Even though isolates of several bacterial genera studied in this work have already been described as hydrocarbon-degrading microbes, such as Pseudomonas (Yetti et al 2016 ), Bacillus (Mansur et al 2014 ), Paenibacillus (Mesbaiah et al 2016 ), Tistrella (Zhang et al 2011 ), Rhodococcus, and Streptomyces (Ubani et al 2022 ), among others, the variety of microbial species capable of degrading and tolerating high concentrations of pure asphaltenes has been much less reported. To our knowledge, among the isolated species in this study, only Rhodococcus qingshengii has been reported to mineralise pure asphalt to some extent (Nie et al 2021 ). Only eight out of 22 of the native bacterial isolates described in this study were able to tolerate very high concentrations of 20,000 and 60,000 mg asphaltenes l −1 , which would be equivalent to a 2 and 6 wt.% content in soil, respectively, indicating that not all soil native bacterial populations can withstand high amounts of asphaltenes when present in real contaminated soils or are able to actively grow and mineralise them under such adverse conditions.…”

Section: Discussionmentioning

confidence: 84%

Development of a highly tolerant bacterial consortium for asphaltene biodegradation in soils

Navas-Cáceres,

Parada,

Zafra

2023

Environ Sci Pollut Res

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Asphaltenes are the most polar and heavy fraction of petroleum, and their complex structure and toxicity make them resistant to biodegradation. The ability to tolerate high asphaltene concentrations is crucial to reducing the toxicity-related inhibition of microbial growth and improving their capacity for adaptation, survival, and biodegradation in soils highly contaminated with asphaltenes. This study developed a highly tolerant consortium for efficient asphaltene biodegradation in soils from 22 bacterial isolates obtained from heavy-crude oil-contaminated soils. Isolates corresponded to the Rhodococcus, Bacillus, Stutzerimonas, Cellulosimicrobium, Pseudomonas, and Paenibacillus genera, among others, and used pure asphaltenes and heavy crude oil as the only carbon sources. Surface plate assays were used to evaluate the tolerance of individual isolates to asphaltenes, and the results showed variations in the extension and inhibition rates with maximum tolerance levels at 60,000 mg asphaltenes l−1. Inhibition assays were used to select non-antagonistic bacterial isolates among those showing the highest tolerance levels to asphaltenes. A consortium made up of the five most tolerant and non-antagonistic bacterial isolates was able to degrade up to 83 wt.% out of 10,000 mg asphaltenes kg−1 in the soil after 52 days. Due to its biological compatibility, high asphaltene tolerance, and ability to utilise it as a source of energy, the degrading consortium developed in this work has shown a high potential for soil bioremediation and is a promising candidate for the treatment of aged soil areas contaminated with heavy and extra-heavy crude oil. This would be the first research to assess and consider extreme bacterial tolerance and microbial antagonism between individual degrading microbes, leading to the development of an improved consortium capable of efficiently degrading high amounts of asphaltenes in soil.

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Section: Discussionmentioning

confidence: 84%

Development of a highly tolerant bacterial consortium for asphaltene biodegradation in soils

Navas-Cáceres,

Parada,

Zafra

2023

Environ Sci Pollut Res

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“…YF1 on PAN-CF@YF1 to interact more fully, thereby increasing the utilization efficiency of Sphingopyxis sp. YF1 for MC-LR and enhancing the degradation rate [ 45 , 46 ]. Table S2 shows the methods used by others to remove MC-LR using free bacteria and immobilized bacteria.…”

Section: Resultsmentioning

confidence: 99%

Reusable and Practical Biocomposite Based on Sphingopyxis sp. YF1 and Polyacrylonitrile-Based Carbon Fiber for the Efficient Bioremediation of Microcystin-LR-Contaminated Water

Ma,

Zhang,

Yang

et al. 2023

Toxins

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Microbial degradation is a cost-effective and environmentally friendly method for removing microcystin-LR (MC-LR). However, the application of free bacteria has limitations due to low operational stability and difficulties in recovery. In a previous study, our group successfully isolated a highly efficient MC-LR-degrading bacterium, Sphingopyxis sp. YF1, from Taihu. To enhance its practical potential in addressing MC-LR-contaminated water pollution, a novel biological material named polyacrylonitrile-based carbon fiber @Sphingopyxis sp. YF1 (PAN-CF@YF1) was synthesized. The immobilization conditions of strain Sphingopyxis sp. YF1 on PAN-CF surfaces were optimized using Box–Behnken design and response surface methodology (RSM), which turned out to be an optimal pH of 7.6 for the culture medium, a ratio of 0.038 g of supporting materials per 100 mL of culture media, and an incubation time of 53.4 h. The resultant PAN-CF@YF1 showed a great degradation effect both for low and high concentrations of MC-LR and exhibited satisfactory cyclic stability (85.75% after six cycles). Moreover, the application of PAN-CF@YF1 in the bioreactors demonstrated effective and sustainable MC-LR removal, with a removal efficiency of 78.83% after three consecutive treatments. Therefore, PAN-CF@YF1 with high degradation activity, environmental compatibility, straightforward preparation, and recyclability shows significant application potential for the bioremediation of MC-LR-contaminated water bodies.

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“…Microorganism immobilization technology has been widely researched and explored in water contaminants' treatment [47][48][49]. In the past few decades, kinds of bacteria capable of degrading MCs have been isolated from natural conditions [44,[50][51][52][53].…”

Section: Biodegradation Of Mcsmentioning

confidence: 99%

“…Organic materials-based carriers have a larger capacity for bacteria loading and provide higher diffusion rates. Bai et al [71] used crosslinked PVA as a carrier to immobilize nitrifying bacteria, and Nie et al [48] immobilized Rhodococcus qingshengii strain FF on the surface of polyethylene. Quartz sand is a common carrier often used in biological filtration (BF), which has received extensive attention as an optimized method for sand filtration [72].…”

Section: The Carriers Of Microbial Immobilizationmentioning

confidence: 99%

Immobilization of Microbes for Biodegradation of Microcystins: A Mini Review

Zhang

Jia

Massey

et al. 2022

Toxins

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Harmful cyanobacterial blooms (HCBs) frequently occur in eutrophic freshwater ecosystems worldwide. Microcystins (MCs) are considered to be the most prominent and toxic metabolites during HCBs. MCs may be harmful to human and animal health through drinking water and recreational water. Biodegradation is eco-friendly, cost-effective and one of the most effective methods to remove MCs. Many novel MC-degrading bacteria and their potential for MCs degradation have been documented. However, it is a challenge to apply the free MC-degrading bacterial cells in natural environments due to the long-term operational instability and difficult recycling. Immobilization is the process of restricting the mobility of bacteria using carriers, which has several advantages as biocatalysts compared to free bacterial cells. Biological water treatment systems with microbial immobilization technology can potentially be utilized to treat MC-polluted wastewater. In this review article, various types of supporting materials and methods for microbial immobilization and the application of bacterial immobilization technology for the treatment of MCs-contaminated water are discussed. This article may further broaden the application of microbial immobilization technology to the bioremediation of MC-polluted environments.

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Immobilization of Rhodococcus qingshengii strain FF on the surface of polyethylene and its adsorption and biodegradation of mimic produced water

Cited by 9 publications

References 26 publications

Development of a highly tolerant bacterial consortium for asphaltene biodegradation in soils

Development of a highly tolerant bacterial consortium for asphaltene biodegradation in soils

Reusable and Practical Biocomposite Based on Sphingopyxis sp. YF1 and Polyacrylonitrile-Based Carbon Fiber for the Efficient Bioremediation of Microcystin-LR-Contaminated Water

Immobilization of Microbes for Biodegradation of Microcystins: A Mini Review

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