Review of catalytic activities of biosynthesized metallic nanoparticles in wastewater treatment

The review is devoted to biocatalysts based on actinobacteria of the genus Rhodococcus, which are promising for environmental biotechnologies. In the review, biotechnological advantages of Rhodococcus bacteria are evaluated, approaches used to develop robust and efficient biocatalysts are discussed, and their relevant applications are given. We focus on Rhodococcus cell immobilization in detail (methods of immobilization, criteria for strains and carriers, and optimization of process parameters) as the most efficient approach for stabilizing biocatalysts. It is shown that advanced Rhodococcus biocatalysts with improved working characteristics, enhanced stress tolerance, high catalytic activities, human and environment friendly, and commercially viable are developed, which are suitable for wastewater treatment, bioremediation, and biofuel production.

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Facile surface modification of nickel ferrite nanoparticles for inherent multiple fluorescence and catalytic activities

RSC Advances ◽

10.1039/c7ra09299g ◽

2018 ◽

Vol 8 (1) ◽

pp. 38-43 ◽

Cited By ~ 3

Author(s):

Souvanik Talukdar ◽

Rupali Rakshit ◽

André Krämer ◽

Frank A. Müller ◽

Kalyan Mandal

Keyword(s):

Wastewater Treatment ◽

Surface Modification ◽

Nickel Ferrite ◽

Cell Imaging ◽

Ferrite Nanoparticles ◽

Catalytic Activities ◽

Nickel Ferrite Nanoparticles ◽

Surface Modified

We have developed bio-compatible magneto-fluorescent NiFe2O4 nanoparticles (NPs) by modifying the surface of the NPs with Na-tartrate. The surface modified NiFe2O4 NPs are beneficial for cell imaging, wastewater treatment and therapeutics.

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Relative Catalytic Activities of Carbon Nanotube-Supported Metallic Nanoparticles for Room-Temperature Hydrogenation of Benzene

The Journal of Physical Chemistry C ◽

10.1021/jp809366w ◽

2009 ◽

Vol 113 (4) ◽

pp. 1520-1525 ◽

Cited By ~ 107

Author(s):

Byunghoon Yoon ◽

Horng-Bin Pan ◽

Chien M. Wai

Keyword(s):

Carbon Nanotube ◽

Metallic Nanoparticles ◽

Room Temperature ◽

Catalytic Activities

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Controllable synthesis of graphene oxide–silver (gold) nanocomposites and their size-dependencies

RSC Advances ◽

10.1039/c6ra11291a ◽

2016 ◽

Vol 6 (74) ◽

pp. 70468-70473 ◽

Cited By ~ 3

Author(s):

Xiaoqi Fu ◽

Pengpeng Kuang ◽

Shuang Wang ◽

Guolin Zhang ◽

Hengbo Yin

Keyword(s):

Graphene Oxide ◽

Raman Scattering ◽

Metallic Nanoparticles ◽

Controllable Synthesis ◽

Metal Composites ◽

Catalytic Activities ◽

Size Dependent ◽

Dependent Behavior ◽

Gold Nanocomposites

The Raman scattering properties and catalytic activities of as-synthesized GO–metal composites were correlated with the size of metallic nanoparticles and exhibited size-dependent behavior.

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Synthesis and Catalytic Activity Studies of Silver Nanoparticles Stabilized in Polymeric Hydro Gel

10.5772/intechopen.97824 ◽

2021 ◽

Author(s):

Jaya T. Varkey

Keyword(s):

Silver Nanoparticles ◽

Catalytic Activity ◽

Heterogeneous Catalysis ◽

Conventional Method ◽

Metallic Nanoparticles ◽

Biomedical Applications ◽

Catalytic Reduction ◽

Catalytic Activities ◽

Flexible Support ◽

Profound Influence

Silver nanoparticles (AgNPs) are one of the most vital and fascinating nanomaterials among several metallic nanoparticles that are involved in biomedical applications. But their stabilization towards agglomeration is a serious concern. Synthesized silver nanoparticles can be dispersed in polymeric hydrogel for stabilization and can be efficiently used in heterogeneous catalysis. Polystyrene crosslinked with 1, 6-hexanediol diacrylate can be suitably functionalized for catalytic activities. The nature of the support has a profound influence on the reactivity of the polymeric resin. A flexible support with optimum hydrophilic and hydrophobic balance enhanced the reactivity of the supporting system. Using this supported AgNPs catalytic reduction of Para-nitro phenol can be easily accomplished comparing to conventional method.

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Metal Nanoparticles in Dye Wastewater Treatment – Smart Solution for Clear Water

Recent Patents on Nanotechnology ◽

10.2174/1872210515666210217091434 ◽

2021 ◽

Vol 15 ◽

Author(s):

Djurdja Kerkez ◽

Milena Bečelić-Tomin ◽

Vesna Gvoić ◽

Božo Dalmacija

Keyword(s):

Wastewater Treatment ◽

Metal Nanoparticles ◽

Metallic Nanoparticles ◽

Functional Materials ◽

Pollutant Removal ◽

Metal Nanoparticle ◽

Special Focus ◽

Dye Wastewater ◽

Water And Wastewater Treatment ◽

Environmental Application

Background: In past years, nanomaterials have been actively studied and developed, and have been successfully applied in many fields. Due to water scarcity, the application of nanomaterials in water and wastewater treatment has drawn significant attention. Due to their supreme features, they represent functional materials with great potential for pollutant removal and environmental application. Objective: This literature review aims to summarize and present the metal nanoparticles used for dye wastewater treatment. Discussion subject is metallic nanoparticles for mentioned use, with special focus on iron based, bimetallic, and photocatalytic nanomaterials. Method: Reference search of “metal nanoparticles in dye wastewater treatment” was conducted in detail through Serbian Library Consortium for Coordinated Acquisition (KoBSON). Published papers search was mainly based on Web of Science and Science Direct database focusing on latest research in this topic. The corresponding literature was carefully read, analysed and evaluated. Results: Two hundred and twenty-four scientific and review articles, thesis and book chapters were evaluated in order to summarise current trends in metal nanoparticle use in wastewater treatment. An increased trend in scientific research regarding metal nanoparticles can be observed for removal of different inorganic and organic pollutants. Among most extensively tested are dye molecules, representing challenging species in terms of degradation and consequent removal. Modification, layering, combination and green synthesis of metal nanoparticles results in materials capable for efficient and environmentally sustainable wastewater treatment. Conclusion: In this paper, extensive review of metal nanoparticles in dye wastewater treatment is presented. With rapid water demand, development of sustainable materials and technology is necessary. Use of these materials represents eco-friendly, energy efficient and sustainable water purification solution. However, matter of usage commercialization is still to be addressed.

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