Degradation of phenol by aerobic granules and isolated yeast <i>Candida tropicalis</i>

Adav, Sunil S.; Chen, Ming‐Yuan; Lee, Dong Hoon; Ren, Nanqi

doi:10.1002/bit.21148

Cited by 149 publications

(68 citation statements)

References 41 publications

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“…Aerobic granules of C. tropicalis were sufficient enough to degrade the phenol up to 1000 mg/l. The highest concentration of phenol (>1000 mg/l) was inhibitory for C. tropicalis present in the aerobic granule (Adav et al, 2007). Vilimkova et al (2008) found NADPHdependent phenol hydroxylase and catechol-1, 2-dioxygenase from C. tropicalis which helps in the degradation of phenol.…”

Section: Biodegradation Of Phenol By Free and Immobilized Cellsmentioning

confidence: 98%

“…By comparing the previous isolates for phenol degradation, it was observed that the current strain is a more efficient and degraded higher concentration of phenol. Among the various species of yeast, C. tropicalis is the most studied yeast species for its potential for phenol degradation (Yan et al, 2005;Adav et al, 2007;Zhou et al, 2011;Ahmad et al, 2013;Basak et al, 2014a;Long et al, 2014). Besides C. tropicalis, other yeast such as C. lipolytica, Candida utilis, Candida albicans, Trichosporon montevideense, and Trichosporon cutaneum were also used to degrade the phenol and its derivatives (Chen et al, 2002;Vilimkova et al, 2008;Liu et al, 2011;Gerginovaa et al, 2014).…”

Section: Biodegradation Of Phenol By Free and Immobilized Cellsmentioning

confidence: 99%

“…Compared with free cells, immobilized cell was found more efficient for phenol degradation. Previously, polyacrylamide (PAA) gel beads, calcium alginate beads, sugarcane bagasse, agarentrapment by Ramírez et al (2001), Basak et al (2014b) and Adav et al (2007) were used to immobilize C. tropicalis and degrade different concentration of phenol. Aerobic granules of C. tropicalis were sufficient enough to degrade the phenol up to 1000 mg/l.…”

Section: Biodegradation Of Phenol By Free and Immobilized Cellsmentioning

confidence: 99%

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Biodegradation of phenol by free and immobilized Candida tropicalis NPD1401

Kumar¹,

Neeraj²,

Mishra³

et al. 2018

Afr. J. Biotechnol.

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The present research aimed to evaluate the free and immobilized cell of Candida tropicalis NPD1401 for phenol degradation. Immobilized cell of C. tropicalis degraded efficiently up to 98% at a concentration of 1000 mg/l of phenol whereas free cells degraded up to 63% of the same concentration under 9 days of incubation. Stored immobilized beads were reused after 15 days and found to have successfully degraded 62.1% of phenol in the mineral salt medium (MSM). Growth of C. tropicalis was observed in the phenol containing medium by measuring the dry weight of biomass (0.89 g/l at concentration 1000 mg/l) and the degradation was monitored using analytical techniques. Liquid chromatography-mass spectroscopy (LC-MS) analysis confirmed that phenol was degraded by ortho-pathways by the finding of metabolite cis, cis-muconic acid, phenyl phosphate and catechol. Next, isolated strain was identified on the basis of PCR amplification of sequence D2 region of the large subunit of 28S rDNA and it was confirmed as C. tropicalis. By observing the efficiency of the isolate it may be used for the further bioremediation purpose of the phenol contaminated site in the environments.

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Section: Biodegradation Of Phenol By Free and Immobilized Cellsmentioning

confidence: 98%

Section: Biodegradation Of Phenol By Free and Immobilized Cellsmentioning

confidence: 99%

Section: Biodegradation Of Phenol By Free and Immobilized Cellsmentioning

confidence: 99%

See 1 more Smart Citation

Biodegradation of phenol by free and immobilized Candida tropicalis NPD1401

Kumar¹,

Neeraj²,

Mishra³

et al. 2018

Afr. J. Biotechnol.

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show abstract

“…This is a novel biotechnique, characterized by self-immobilization of microorganisms through cell-to-cell adhesion, without any carrier material. Aerobic granules are reported for a very high cell concentration (up to 15,000 mg/l) and to be able to decontaminate high-strength wastewater (up to 15 kg COD/m 3 /day) [51]. However, this technology is still in a development stage.…”

Section: Immobilization Techniquesmentioning

confidence: 99%

Organic Contaminants in Refinery Wastewater: Characterization and Novel Approaches for Biotreatment

Al-Khalid¹,

El‐Naas²

2018

Recent Insights in Petroleum Science and Engineering

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Addressing major environmental issues, such as water pollution, is essential nowadays in realizing sustainable development. The ever-increasing world population and industrial development have led to the introduction of diferent types of chemicals to the environment, leading to considerable deterioration in environmental quality. A major class of these chemicals is phenolic compounds, which are hazardous pollutants and highly toxic even at low concentrations. In recent years, researchers have realized the importance of extracting new bacterial strains that are efective in treating diferent types of highly contaminated wastewaters at diferent severe conditions. They also focused considerable amount of research on developing new types of reactors that would provide eicient mixing and reduce mass transfer limitations. The aim is to develop and evaluate efective reactor systems and biocatalysts for the biodegradation of major contaminants in petroleum reinery wastewater. This chapter examines the diferent available options for the treatment of reinery wastewater with more focus on novel biotreatment options.

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“…Yeasts show the ability to oxidize and cleave aromatic rings where phenol, being a reduced carbon source, can serve as an energy rich nutrient [7][8][9]. In this regard several process strategies have been proposed [5].…”

Section: Introductionmentioning

confidence: 99%

Model-Based Analysis of a Phenol Bio-Oxidation Process by Adhered and Suspended Candida tropicalis

Velasco-Bedrán¹,

Hormiga²,

Santos³

et al. 2013

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Phenol is an important commodity for the chemical industry, used for many processes and deemed to be a major pollutant due to its xenobiotic nature and high toxicity. For the purpose of phenol bioremediation a biotechnological set up consisting of a continuous packed column bioreactor with Candida tropicalis adhered onto activated carbon beads has been previously described. In this work, we show how the integration of available experimental data of such a biotechnological set up into a mathematical model, can lead both to a better comprehension of the underlying physiological mechanisms operating in the cell culture, and to the identification of the system parameters optimum performance. The model so constructed describes the dynamics of phenol uptake and growth rates by the adhered and suspended biomass; the lethality rates; the adhered biomass removal into suspension or adherence onto carbon beads rates and the phenol and biomass (adhered and suspended) concentrations. It also serves to identify different physiological states for the adhered and the suspended biomass; its predictions being verified by comparing with experimental observations. Based on the model description, different optimization strategies are proposed, some of which have been experimentally tested, encompassing changes in bioreactor operation conditions, process development and strain development.

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Degradation of phenol by aerobic granules and isolated yeast Candida tropicalis

Cited by 149 publications

References 41 publications

Biodegradation of phenol by free and immobilized Candida tropicalis NPD1401

Biodegradation of phenol by free and immobilized Candida tropicalis NPD1401

Organic Contaminants in Refinery Wastewater: Characterization and Novel Approaches for Biotreatment

Model-Based Analysis of a Phenol Bio-Oxidation Process by Adhered and Suspended Candida tropicalis

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