A review on electrochemically modified carbon nanotubes (CNTs) membrane for desalination and purification of water

Chowdhury, Zaira Zaman; Sagadevan, Suresh; Johan, Rafie Bin; Shah, Syed Tawab; Adebesi, Abimola; Islam, Md. Sakinul; Rafique, Rahman Faizur

doi:10.1088/2053-1591/aada65

Cited by 35 publications

(12 citation statements)

References 165 publications

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“…For example, the immense potential of carbon nanotubes (CNTs) as an additive has been a subject of interest to be used in the fabrication of the membranes [21,22]. Both single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) have been included in different polymeric membranes to enhance their hydrophobicity [23,24]. SWCNTs have better properties than MWCNTs, but difficult dispersion is a noticeable issue.…”

Section: Introductionmentioning

confidence: 99%

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

et al. 2020

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In this work, a novel triple-layer nanocomposite membrane prepared with polyethersulfone (PES)/carbon nanotubes (CNTs) as the primary bulk material and poly (vinylidene fluoride-co-hexafluoro propylene) (PcH)/CNTs as the outer and inner surfaces of the membrane by using electrospinning method is introduced. Modified PES with CNTs was chosen as the bulk material of the triple-layer membrane to obtain a high porosity membrane. Both the upper and lower surfaces of the triple-layer membrane were coated with PcH/CNTs using electrospinning to get a triple-layer membrane with high total porosity and noticeable surface hydrophobicity. Combining both characteristics, next to an acceptable bulk hydrophobicity, resulted in a compelling membrane for membrane distillation (MD) applications. The prepared membrane was utilized in a direct contact MD system, and its performance was evaluated in different salt solution concentrations, feed velocities and feed solution temperatures. The results of the prepared membrane in this study were compared to those reported in previously published papers. Based on the evaluated membrane performance, the triple-layer nanocomposite membrane can be considered as a potential alternative with reasonable cost, relative to other MD membranes.

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Section: Introductionmentioning

confidence: 99%

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

et al. 2020

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“…Industrial membranes achieve high H 2 O permeation through an asymmetric structure that includes a thin surface layer that exhibits good separation performance on a thick support layer, providing mechanical strength and low resistance to H 2 O transmission [287]. Although the thin skin layer increases the permeability to H 2 O, the pollutants in the H 2 O feed will deposit and accumulate on the membrane surface (external fouling), reducing the H 2 O flux.…”

Section: Membrane Fouling Mitigationmentioning

confidence: 99%

“…Fouling hinders the widespread adoption of energy-saving membranes in industrial applications, Figure 26 When operating at constant flux, the flux is observed to drop for a fixed transmembrane pressure (TMP), or a higher TMP is required for the pressure-driven process during fouling [286]. Industrial membranes achieve high H2O permeation through an asymmetric structure that includes a thin surface layer that exhibits good separation performance on a thick support layer, providing mechanical strength and low resistance to H2O transmission [287]. Although the thin skin layer increases the permeability to H2O, the pollutants in the H2O feed will deposit and accumulate on the membrane surface (external fouling), reducing the H2O flux.…”

Section: Membrane Fouling Mitigationmentioning

confidence: 99%

A Review on Promising Membrane Technology Approaches for Heavy Metal Removal from Water and Wastewater to Solve Water Crisis

Batouti

Al‐Harby

Elewa

2021

Water

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Due to the impacts of water scarcity, the world is looking at all possible solutions for decreasing the over-exploitation of finite freshwater resources. Wastewater is one of the most reliable and accessible water supplies. As the population expands, so do industrial, agricultural, and household operations in order to meet man’s enormous demands. These operations generate huge amounts of wastewater, which may be recovered and used for a variety of reasons. Conventional wastewater treatment techniques have had some success in treating effluents for discharge throughout the years. However, advances in wastewater treatment techniques are required to make treated wastewater suitable for industrial, agricultural, and household use. Diverse techniques for removing heavy metal ions from various water and wastewater sources have been described. These treatments can be categorized as adsorption, membrane, chemical, or electric. Membrane technology has been developed as a popular alternative for recovering and reusing water from various water and wastewater sources. This study integrates useful membrane technology techniques for water and wastewater treatment containing heavy metals, with the objective of establishing a low-cost, high-efficiency method as well as ideal production conditions: low-cost, high-efficiency selective membranes, and maximum flexibility and selectivity. Future studies should concentrate on eco-friendly, cost-effective, and long-term materials and procedures.

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“…Carbon nanodots are Carbon black (CB) is mostly obtained by combustion of petroleum products They consist of the spherical nanoparticles with a diameter from 3 to 100 nm, which are often bonded to each other to form aggregates. The CB surface area can vary from 15 to 1000 m 2 /g, and the electroconductivity ((1.0-2) × 10 3 Sm −1 [80]) is higher than that of CNTs (0.02-0.25 Sm −1 [81]). The CB nanoparticles have a high concentration of oxygen-containing surface groups that can be involved in the covalent attachment of many biochemical receptors.…”

Section: Carbon Nanomaterialsmentioning

confidence: 99%

Advances in Electrochemical Aptasensors Based on Carbon Nanomaterials

et al. 2020

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Carbon nanomaterials offer unique opportunities for the assembling of electrochemical aptasensors due to their high electroconductivity, redox activity, compatibility with biochemical receptors and broad possibilities of functionalization and combination with other auxiliary reagents. In this review, the progress in the development of electrochemical aptasensors based on carbon nanomaterials in 2016–2020 is considered with particular emphasis on the role of carbon materials in aptamer immobilization and signal generation. The synthesis and properties of carbon nanotubes, graphene materials, carbon nitride, carbon black particles and fullerene are described and their implementation in the electrochemical biosensors are summarized. Examples of electrochemical aptasensors are classified in accordance with the content of the surface layer and signal measurement mode. In conclusion, the drawbacks and future prospects of carbon nanomaterials’ application in electrochemical aptasensors are briefly discussed.

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A review on electrochemically modified carbon nanotubes (CNTs) membrane for desalination and purification of water

Cited by 35 publications

References 165 publications

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

Triple-Layer Nanocomposite Membrane Prepared by Electrospinning Based on Modified PES with Carbon Nanotubes for Membrane Distillation Applications

A Review on Promising Membrane Technology Approaches for Heavy Metal Removal from Water and Wastewater to Solve Water Crisis

Advances in Electrochemical Aptasensors Based on Carbon Nanomaterials

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