Carbon Nanotube in Water Treatment

Das, Rasel

doi:10.1007/978-3-319-58151-4_2

Cited by 14 publications

(7 citation statements)

References 130 publications

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“…The interactions of pollutant molecules with CNTs are strong due to their large surface area, high porous and hollow structure and light mass density. The external surface, peripheral groove, inner site and interstitial channel are the main sites for adsorption (Das, 2017). Adsorption capacity and selectivity of the CNTs can be increased by surface modifications or acid treatments, or addition of functional groups or molecules, metals or metal oxides, etc.…”

Section: Adsorptionmentioning

confidence: 99%

“…The presence of functional groups such as –COOH, –OH, and/or –NH2 can increase the adsorption capacity of CNTs. The most common interaction forces between the CNTs and water pollutants are hydrogen bonds, covalent bonds, ion exchange, hydrophobic and electrostatic interactions, Pi‐i electron coupling and mesopore filling (Das, 2017). Reports show that the adsorption capacity of CNTs are higher towards the aromatic compounds than the metal cations (Boncel et al ., 2015).…”

Section: Adsorptionmentioning

confidence: 99%

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Nanotechnology‐based wastewater treatment

Cheriyamundath

Vavilala

2020

Water & Environment J

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Water contamination is a global challenge impacting both the environment and human health with significant economic and social costs. The growing scarcity of usable water resources requires effective treatment of wastewater. In this context, developing cheaper, safer and more efficient wastewater treatment technologies are the need of the hour. One promising approach that several studies have reported success has been the usage of nanomaterials in water and waste water management. The rapid progress of research in nanomaterial sciences has shown their growing potential; however, there has not been a great amount of information available on their implementation. This review focuses on developments in nanotechnology that hold strong potential for wastewater treatment. The review covers key techniques in nanomaterial‐based water treatments including adsorption, filtration and photocatalysis with recent examples showing how to improve their properties and efficiencies according to the need.

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Section: Adsorptionmentioning

confidence: 99%

Section: Adsorptionmentioning

confidence: 99%

Nanotechnology‐based wastewater treatment

Cheriyamundath

Vavilala

2020

Water & Environment J

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“…Moreover, CNT have an additional advantage compared to graphene, which is the capacity to create mesopores when bundled together. Therefore, it presents several more sites for the adsorption of ions: within the walls of the CNT, between CNT or within the mesopores, on the walls of the CNT and in peripheral grooves [64].…”

Section: Nanostructured Carbon Allotropes In 137cs+ Capturementioning

confidence: 99%

Towards the Extraction of Radioactive Cesium-137 from Water via Graphene/CNT and Nanostructured Prussian Blue Hybrid Nanocomposites: A Review

Rauwel

2019

Nanomaterials

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Cesium is a radioactive fission product generated in nuclear power plants and is disposed of as liquid waste. The recent catastrophe at the Fukushima Daiichi nuclear plant in Japan has increased the 137Cs and 134Cs concentrations in air, soil and water to lethal levels. 137Cs has a half-life of 30.4 years, while the half-life of 134Cs is around two years, therefore the formers’ detrimental effects linger for a longer period. In addition, cesium is easily transported through water bodies making water contamination an urgent issue to address. Presently, efficient water remediation methods towards the extraction of 137Cs are being studied. Prussian blue (PB) and its analogs have shown very high efficiencies in the capture of 137Cs+ ions. In addition, combining them with magnetic nanoparticles such as Fe3O4 allows their recovery via magnetic extraction once exhausted. Graphene and carbon nanotubes (CNT) are the new generation carbon allotropes that possess high specific surface areas. Moreover, the possibility to functionalize them with organic or inorganic materials opens new avenues in water treatment. The combination of PB-CNT/Graphene has shown enhanced 137Cs+ extraction and their possible applications as membranes can be envisaged. This review will survey these nanocomposites, their efficiency in 137Cs+ extraction, their possible toxicity, and prospects in large-scale water remediation and succinctly survey other new developments in 137Cs+ extraction.

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“…The antibacterial activity of bundled CNT is lesser than the debundled form. [164] Recently few review articles published on the preparation of CNT membranes and discuss their recent progress in this field. [165] Lately, incorporation of CNT in the polymer matrix is found to impart excellent mechanical and antibacterial behaviour.…”

Section: Graphene Oxide (Go)mentioning

confidence: 99%

Recent Advances in Preparation of Porous Polymeric Membranes by Unique Techniques and Mitigation of Fouling through Surface Modification

et al. 2018

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In this review, modern techniques for the membrane preparation including 3D printing, phase separation micro molding, selective etching and self‐assembled and non‐solvent induced phase separation (SNIPS) are discussed. The article also takes account of traditional membrane preparation techniques such as phase inversion, sintering, track etching and electrospinning. Although, there is plenty of literature exists on the preparation and tailoring of membrane properties, there are still challenges to develop and establish a reliable membrane fabrication method with high flux, selectivity and anti‐fouling properties. Hydrophobic polymers are more prone to foul due to its low surface energy compared to hydrophilic polymers. Fouling resistance of membrane against microbes and proteins had been significantly improved by the use of nanoparticles, and modification with hydrophilic polymers. Mussel‐inspired coating and amyloid proteins are also recently found to have excellent antibacterial activity are also reviewed. Hence, a broad understanding of structure and properties is essential for further development and progress in membrane technology for water purification.

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Carbon Nanotube in Water Treatment

Cited by 14 publications

References 130 publications

Nanotechnology‐based wastewater treatment

Nanotechnology‐based wastewater treatment

Towards the Extraction of Radioactive Cesium-137 from Water via Graphene/CNT and Nanostructured Prussian Blue Hybrid Nanocomposites: A Review

Recent Advances in Preparation of Porous Polymeric Membranes by Unique Techniques and Mitigation of Fouling through Surface Modification

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