Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test

Wang, Ping; Nong, Xu‐Hua; Ge, Jie-Hong

doi:10.2225/vol14-issue4-fulltext-1

Cited by 6 publications

(7 citation statements)

References 14 publications

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“…NPEO x and its derivative degrading bacterial strains have been isolated from several natural environments and wastewater treatment plants [1, 5, 21, 30, 57–59]. In this paper the reported data indicated that indigenous bacterial strains, isolated from soil, are able to use NPEO 15 as the sole carbon source.…”

Section: Resultsmentioning

confidence: 91%

“…The degradation of the aromatic ring occurs under aerobic conditions yielding several soluble metabolites which are finally degraded to CO 2 [30]; the kinetic order of the reaction corresponds to a first-order process [31, 32]. In anaerobiosis, Pseudomonas putida degraded NPEO x , with different length chains ( x = 6, 9 and 20), yielding as a final product NPEO 2 , no carboxylic acids were detected [8].…”

Section: Introductionmentioning

confidence: 99%

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Biodegradation of Polyethoxylated Nonylphenols

et al. 2013

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Polyethoxylated nonylphenols, with different ethoxylation degrees (NPEOx), are incorporated into many commercial and industrial products such as detergents, domestic disinfectants, emulsifiers, cosmetics, and pesticides. However, the toxic effects exerted by their degradation products, which are persistent in natural environments, have been demonstrated in several animal and invertebrate aquatic species. Therefore, it seems appropriate to look for indigenous bacteria capable of degrading native NPEOx and its derivatives. In this paper, the isolation of five bacterial strains, capable of using NPEO15, as unique carbon source, is described. The most efficient NPEO15 degrader bacterial strains were identified as Pseudomonas fluorescens (strain Yas2) and Klebsiella pneumoniae (strain Yas1). Maximal growth rates were reached at pH 8, 27°C in a 5% NPEO15 medium. The NPEO15 degradation extension, followed by viscometry assays, reached 65% after 54.5 h and 134 h incubation times, while the COD values decreased by 95% and 85% after 24 h for the Yas1 and Yas2 systems, respectively. The BOD was reduced by 99% and 99.9% levels in 24 h and 48 h incubations. The viscosity data indicated that the NPEO15 biodegradation by Yas2 follows first-order kinetics. Kinetic rate constant (k) and half life time (τ) for this biotransformation were estimated to be 0.0072 h−1 and 96.3 h, respectively.

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Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Biodegradation of Polyethoxylated Nonylphenols

et al. 2013

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“…The nonionic surfactant was determined by spectrophotometric analysis with phosphomolybdic acid [28]. The degradation of the aromatic ring of neonol AF9-12 and isononylphenol was determined spectrophotometrically at 277 nm [29].…”

Section: Spectrophotometric Analysismentioning

confidence: 99%

“…In our experiments metabolites on sorghum germination, lengt (Figure 6). Control levels represent the corre of shoots, length of roots) in control treatme The use of spectrophotometric methods [28,29] revealed that basidiomycetes P. ostreatus f. Florida, P. ostreatus MUT, P. ostreatus 336, P. ostreatus LE-BINB, B. adusta, S. commune, and ascomycete C. herbarum attacked the oxyethyl chain, while the aromatic ring remained intact. S. rugosoannulata and T. ochracea degraded the aromatic ring.…”

Section: The Study Of the Phytotoxicity Of Parent Comentioning

confidence: 99%

Widespread Ability of Ligninolytic Fungi to Degrade Hazardous Organic Pollutants as the Basis for the Self-Purification Ability of Natural Ecosystems and for Mycoremediation Technologies

et al. 2022

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The ability of sixteen wood- and soil-inhabiting basidiomycete strains and four ascomycete strains to degrade the most hazardous, widespread, and persistent pollutants (polycyclic aromatic hydrocarbons, oxyethylated nonylphenol, alkylphenol, anthraquinone-type synthetic dyes, and oil) was found. The disappearance of the pollutants, their main metabolites, and some adaptive properties (activities of ligninolytic enzymes, the production of emulsifying compounds and exopolysaccharides) were evaluated. The toxicity of polycyclic aromatic hydrocarbons decreased during degradation. New data were obtained regarding (1) the dependence of the completeness of polycyclic aromatic hydrocarbon degradation on the composition of the ligninolytic enzyme complex; (2) the degradation of neonol AF9-12 by higher fungi (different accessibilities of the oxyethyl chain and the aromatic ring of the molecules to different fungal genera); and (3) the production of an emulsifying agent in response to the presence in the cultivation medium of hydrophobic pollutants as the common property of wood- and soil-inhabiting basidiomycetes and ascomycetes. Promise for use in mycoremediation was shown in the wood-inhabiting basidiomycetes Pleurotus ostreatus f. Florida, Schizophyllum commune, Trametes versicolor MUT 3403, and Trametes versicolor DSM11372; the litter-decomposing basidiomycete Stropharia rugosoannulata; and the ascomycete Cladosporium herbarum. These fungi degrade a wide range of pollutants without accumulation of toxic metabolites and produce ligninolytic enzymes and emulsifying compounds.

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“…PH was adjusted to 7 with buffer solution. All inoculated plates were incubated at 30°C for 5-7 days [24] .Control was prepared simultaneously without carbon source. Three parallel tests for NPEOs and control plates were carried out.…”

Section: Primary Screening Of Fungal Isolates Capable Of Degrading No...mentioning

confidence: 99%

Biodegradation of Nonylphenol Ethoxylate in waste water by Penicillium chrysogenum

et al. 2021

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Current research aims to isolate fungal isolates capable of biodegrading Nonylphenol Ethoxylate (NPEOs) from secondary activated sludge. Samples were collected from Zenin wastewater treatment plant, El-Giza, Egypt. Physical and chemical analyses were performed. Screening of microbial isolates capable of degrading Nonylphenol Ethoxylate was performed on basal salts medium with Nonylephenol Ethoxylate as the only carbon source. Quantification of the residual amount of NPEOs was determined by using a liquid chromatography technique. Morphological identification of the most promising fungal isolates degrading NPEOs was performed based on current universal keys, Penicillium database management system and molecular technique 18S rDNA using ITS1 (forward) and ITS4 (reverse) primers. Cytotoxicity test was performed by using different concentrations of NPEOs. Results revealed that eight most promising fungal isolates capable of degrading NPEOs were obtained , which achieved the highest percentage of biodegradation (70 -80 %).One novel species named Penicillium chrysogenum was able to biodegrade (NPEOs) (80% degradation). In case of the Penicillium chrysogenum cytotoxic activity against mammalian cells from African green monkey kidney cells was detected under these experimental conditions (CC50) was 46.5 ± 4.8 µg/ml and the inhibitory cytotoxic activity against normal human lung fibroblast cells was detected under these experimental conditions with CC50 was 74.1 ± 6.1 µg/ml.

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Aerobic biodegradation of nonylphenol ethoxylates in shaking-flask test

Cited by 6 publications

References 14 publications

Biodegradation of Polyethoxylated Nonylphenols

Biodegradation of Polyethoxylated Nonylphenols

Widespread Ability of Ligninolytic Fungi to Degrade Hazardous Organic Pollutants as the Basis for the Self-Purification Ability of Natural Ecosystems and for Mycoremediation Technologies

Biodegradation of Nonylphenol Ethoxylate in waste water by Penicillium chrysogenum

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