Degradation of nonylphenol polyethoxylates by functionalized Fe3O4 nanoparticle-immobilized Sphingomonas sp. Y2

Bai, Naling; Wang, Sheng; Sun, Pengfei; Abuduaini, Rexiding; Zhu, Xuemei; Zhao, Yong

doi:10.1016/j.scitotenv.2017.09.290

Cited by 35 publications

(5 citation statements)

References 36 publications

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“…Nevertheless, high phenol concentration in samples could inhibit bacterial activity and result in low phenol degradation [ 48 ]. When free bacteria are used for wastewater treatment, certain limitations such as substrate inhibition and sensitivity to environmental conditions are present [ 53 , 54 ].…”

Section: Resultsmentioning

confidence: 99%

Bacterial Communities in Effluents Rich in Phenol and Their Potential in Bioremediation: Kinetic Modeling

Morones-Esquivel

Núñez-Núñez

Hernández-Mendoza

et al. 2022

IJERPH

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Phenol is used in the manufacturing process of phenolic resins from which residues remain that must be sent for confinement. For that reason, in this study, the wastewater of a resin factory was analyzed to isolate the bacteria present, identify them by molecular methods and finally evaluate their impact on bioremediation treatment. A total of 15 bacteria were isolated, of these, eight belong to the genus Bacillus spp. All bacteria were individually multiplied and inoculated in clusters in 15 L reactors which were carefully monitored for pH, electrical conductivity, chemical oxygen demand and temperature. The acquired data were analyzed using ANOVA with repeated measurements. The first test revealed that native bacterial communities reduce the phenol content by up to 20% and COD by 49%, which is significant with respect to the reactor not being inoculated with bacteria. Furthermore, when a mathematical model was applied to the reactors, it was shown that the bacteria require an adaptation time of approximately 100 h. A second test where the inoculation was interspersed with the addition of lime as a flocculant showed that, even though the reduction in phenol and COD was lower than in the previous test, the difference between treatments and control is statistically significant (α ≤ 0.05).

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Section: Resultsmentioning

confidence: 99%

Bacterial Communities in Effluents Rich in Phenol and Their Potential in Bioremediation: Kinetic Modeling

Morones-Esquivel

Núñez-Núñez

Hernández-Mendoza

et al. 2022

IJERPH

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“…This immobilized system does not affect the activity of Sphingomonas sp. and exhibits 79.5% and 99.9% of nonylphenol polyethoxylates (NPEOs) (500 ppm) degradation efficiency on days 1 and 2 (Bai et al 2018).…”

Section: Nps With Bacteriamentioning

confidence: 99%

Leachate treatment potential of nanomaterial based assemblies: a systematic review on recent development

Vaidh

Parekh

Patel

et al. 2022

Water Science and Technology

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Rapid development of the population has brought about a serious problem of waste generation and management. Open dumping and land filling are two of the preferred options for waste management and treatment. As a consequence of this, the accumulation of leachates has become one of the concerns for environmental sustainability. In this regard, various treatment methodologies have been developed in recent decades. Among them, the nanomaterial-based approaches are the emerging ones in the current scenario due to their various unique properties. Furthermore, nanomaterial-based assemblies (i.e., nanomaterials combined with microbes, chemical catalysts, enzymes, and so on) have been introduced as a novel modification for leachate treatment. This work, therefore, has been dedicated to comprehensively reviewing all nanomaterial based leachate treatment techniques. In this regard, the first part of this review will discuss the nano catalyst, nano adsorbent along with their synthesis and mechanistic view of pollutant removal potential. In the second part, the nanomaterial-based microbial conjugates applied in the leachate treatments have been discussed. Apart from this, various other nanomaterial-based methods have been discussed in the third part of the review. Hence this review is providing an insight of all the recent developments pertaining to the nano material based leachate treatment techniques.

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“…Methods to immobilize bacteria can be placed into different categories: selfimmobilization, which is known as the self-attachment of microorganisms to the carrier, or self-aggregation, which is known as the flocculation, or foreign aid immobilization, which involves physically adding flocculants, embedding agents, or changing the external conditions of microorganisms, among others. Several fixation methods can generally be divided into physical and chemical methods (Bai et al 2018;Ke et al 2018). The physical method requires the retention of bacteria on the surface of the support material or the bacterial encapsulation inside the fixation material via physical forces, such as van der Waals forces and electrostatic interactions.…”

Section: Classification Of the Microbial Immobilization Technologiesmentioning

confidence: 99%

Application progress of microbial immobilization technology based on biomass materials

Zhang

Fan

Zhang

et al. 2021

BioRes

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In recent years, microbial degradation technology has shown broad potential in the fields of agriculture, industry, and environmental protection. However, in practical applications the technology still encounters many problems, such as low bacterial survivability during dynamic operations, the need to remove bacterial liquid, and low tolerance in high-toxic environments, among other issues. Immobilization technology has been developed to overcome such limitations. Microbial strains have been prepared for a specific range of activities utilizing self-fixation or exosome fixation. Immobilization can significantly improve strain density, toxicity tolerance, and bacterial liquid removal. This review first presents the advantages and disadvantages of the current microbial immobilization technologies and then summarizes the properties and characteristics of various carrier materials. The review focuses on how biomass-derived materials have been used as the carriers in new microbial immobilization technologies. The excellent biocompatibility, unique physical structure, and diversified modification methods of biomass-derived materials have shown excellent prospects in the field of microbial immobilization. Finally, microbial immobilization technologies’ potential applications in agriculture, industry, and environmental applications are considered.

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Degradation of nonylphenol polyethoxylates by functionalized Fe3O4 nanoparticle-immobilized Sphingomonas sp. Y2

Cited by 35 publications

References 36 publications

Bacterial Communities in Effluents Rich in Phenol and Their Potential in Bioremediation: Kinetic Modeling

Bacterial Communities in Effluents Rich in Phenol and Their Potential in Bioremediation: Kinetic Modeling

Leachate treatment potential of nanomaterial based assemblies: a systematic review on recent development

Application progress of microbial immobilization technology based on biomass materials

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