Phenol degradation by environmental bacteria entrapped in cryogels

Satchanska, Galina; Topalova, Yana; Dimkov, R.; Groudeva, V.; Petrov, Petar; Tsvetanov, Christo B.; Selenska‐Pobell, Sonja; Golovinsky, Evgeny

doi:10.1080/13102818.2015.1009167

Cited by 16 publications

(14 citation statements)

References 31 publications

(31 reference statements)

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“…This study revealed the potential of MSSRFPD35 in degrading phenol in the presence of different heavy metals. Satchanska et al (2015) also reported that bacterial strains B. subtilis KCMRG5 and P . rhodesiae KCMR5 were able to degrade phenol in the presence of heavy metals.…”

Section: Discussionmentioning

confidence: 90%

“…Globally, contamination of phenol and its derivatives in soil and water from industrial effluents are increasing which have major toxic effects to all living organisms ( Prasse et al, 2018 ; Wu et al, 2018 ). Bioremediation of toxic pollutants and inorganic components by microorganisms is a cost-effective and environmentally safe approach ( Satchanska et al, 2015 ; Tiwari et al, 2017 ). Gu (2016) discussed the key components for efficient biodegradation of environmental pollutants, and hence understanding of the microbial system with the knowledge on metabolism, nutrient utilization, growth rate and subsequently kinetics are essential.…”

Section: Discussionmentioning

confidence: 99%

“…To determine the degradation rate ( q ) initial phenol concentration ( S 0 ) was acquired from the slope of the linear curve by plotting between −ln( S / S 0 ) and time. The phenol degradation kinetics was acquired by experimental degradation rate of individual phenol concentration ( Banerjee and Ghoshal, 2010b ; Satchanska et al, 2015 ). To predict the coefficient values, Haldane’s inhibitory model was used (Eq.…”

Section: Methodsmentioning

confidence: 99%

“…Degradation kinetics of microbial bioremediation in bioreactor offers evidence for optimum design and efficient bioremediation of phenol contaminated effluents ( Banerjee and Ghoshal, 2010b ). Generally, the derivatives of phenol and other co-contaminants such as heavy metals discharged from industries pose great challenge for efficient biodegradation and also depends on the tolerance level of the degrading bacterial isolates as these toxic substances negatively correlate with the degradation efficacy ( Thavamani et al, 2012 ; Mohammadi et al, 2014 ; Satchanska et al, 2015 ; Wong et al, 2015 ; Chen et al, 2017 ; Iqbal et al, 2018 ). However, only few studies have reported microbial degradation of phenol particularly at high concentrations (i.e.)…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of Phenol Biodegradation by Heavy Metal Tolerant Rhizobacteria Glutamicibacter nicotianae MSSRFPD35 From Distillery Effluent Contaminated Soils

et al. 2020

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Biodegradation of phenol using bacteria is recognized as an efficient, environmentally friendly and cost-effective approach for reducing phenol pollutants compared to the current conventional physicochemical processes adopted. A potential phenol degrading bacterial strain Glutamicibacter nicotianae MSSRFPD35 was isolated and identified from Canna indica rhizosphere grown in distillery effluent contaminated sites. It showed high phenol degrading efficiency up to 1117 mg L –1 within 60 h by the secretion of catechol 1,2-dioxygenase via ortho intradial pathway. The strain MSSRFPD35 possess both the catechol 1,2 dioxygenase and catechol 2,3 dioxygenase coding genes that drive the ortho and meta pathways, but the enzymatic assay revealed that the strain cleaves catechol via ortho pathway. Haldane’s kinetic method was well fit to exponential growth data and the following kinetic parameter was obtained: μ ∗ = 0.574 h –1 , K i = 268.1, K s = 20.29 mg L –1 . The true μ max and S m were calculated as 0.37 h –1 and 73.76 mg L –1 , respectively. The Haldane’s constant values were similar to earlier studies and healthy fitness depicted in correlation coefficient value R 2 of 0.98. Phenol degrading kinetic’s was predicted using Haldane’s model as q max 0.983, K i ′ 517.5 and K s ′ 9.152. Further, MSSRFPD35 was capable of utilizing different monocyclic and polycyclic aromatic hydrocarbons and to degrade phenol in the presence of different heavy metals. This study for the first time reports high phenol degrading efficiency of G. nicotianae MSSRFPD35 in the presence of toxic heavy metals. Thus, the strain G. nicotianae MSSRFPD35 can be exploited for the bioremediation of phenol and its derivatives polluted environments, co-contaminated with heavy metals.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kinetics of Phenol Biodegradation by Heavy Metal Tolerant Rhizobacteria Glutamicibacter nicotianae MSSRFPD35 From Distillery Effluent Contaminated Soils

et al. 2020

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“…The bioremediation of real wastewater contaminated with phenol and chlorophenol indicated better results when compared to the model systems in carbonate buffer and MSM. The above technique is more rapid and simpler than a previously published three-step cryogel surface immobilisation technique for phenol-degrading bacteria by Satchanska et al [108]. Here, cryogel preparation was based on strong UV treatment of polyethylenoxide (PEO) and a washing step.…”

Section: Partial Nitritation Processmentioning

confidence: 99%

Polymeric Materials Used for Immobilisation of Bacteria for the Bioremediation of Contaminants in Water

2021

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Bioremediation is a key process for reclaiming polluted soil and water by the use of biological agents. A commonly used approach aims to neutralise or remove harmful pollutants from contaminated areas using live microorganisms. Generally, immobilised microorganisms rather than planktonic cells have been used in bioremediation methods. Activated carbon, inorganic minerals (clays, metal oxides, zeolites), and agricultural waste products are acceptable substrates for the immobilisation of bacteria, although there are limitations with biomass loading and the issue with leaching of bacteria during the process. Various synthetic and natural polymers with different functional groups have been used successfully for the efficient immobilisation of microorganisms and cells. Promise has been shown using macroporous materials including cryogels with entrapped bacteria or cells in applications for water treatment and biotechnology. A cryogel is a macroporous polymeric gel formed at sub-zero temperatures through a process known as cryogelation. Macroporous hydrogels have been used to make scaffolds or supports for immobilising bacterial, viral, and other cells. The production of composite materials with immobilised cells possessing suitable mechanical and chemical stability, porosity, elasticity, and biocompatibility suggests that these materials are potential candidates for a range of applications within applied microbiology, biotechnology, and research. This review evaluates applications of macroporous cryogels as tools for the bioremediation of contaminants in wastewater.

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