Electrochemically active carbon nanotube (CNT) membrane filter for desalination and water purification

Chowdhury, Zaira Zaman; Pal, Kaushik; Sagadevan, Suresh; Yehye, Wageeh A.; Johan, Rafie Bin; Shah, Syed Tawab; Adebesi, Abimola; Ali, Md. Eaqub; Islam, Md. Shabiul; Rafique, Rahman Faizur

doi:10.1016/b978-0-12-815818-0.00010-2

Cited by 11 publications

(7 citation statements)

References 153 publications

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“…For this reason, a significant body of research aimed at solving this problem and identifying solutions has been pursued. As one example, desalinization techniques that remove salt from seawater to produce drinkable water have been described [ 2 , 3 , 4 , 5 , 6 ]. This type of strategy is very efficient and can also produce a large quantity of water.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired and Post-Functionalized 3D-Printed Surfaces with Parahydrophobic Properties

2021

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Desertification is a growing risk for humanity. Studies show that water access will be the leading cause of massive migration in the future. For this reason, significant research efforts are devoted to identifying new sources of water. Among this work, one of the more interesting strategies takes advantage of atmospheric non-liquid water using water harvesting. Various strategies exist to harvest water, but many suffer from low yield. In this work, we take inspiration from a Mexican plant (Echeveria pulvinate) to prepare a material suitable for future water harvesting applications. Observation of E. pulvinate reveals that parahydrophobic properties are favorable for water harvesting. To mimic these properties, we leveraged a combination of 3D printing and post-functionalization to control surface wettability and obtain parahydrophobic properties. The prepared surfaces were investigated using IR and SEM. The surface roughness and wettability were also investigated to completely describe the elaborated surfaces and strongly hydrophobic surfaces with parahydrophobic properties are reported. This new approach offers a powerful platform to develop parahydrophobic features with desired three-dimensional shape.

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Section: Introductionmentioning

confidence: 99%

Bioinspired and Post-Functionalized 3D-Printed Surfaces with Parahydrophobic Properties

2021

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“…CNTs are normally hydrophobic, but they can become hydrophilic by oxidizing in acid. 194 CNTs improve the mechanical strength of polymer membranes. 2 wt% of CNTs added to (C 3 H 3 N) n membranes 235 and chitosan-based membranes 236 can increase tensile strength by 97% and 90% respectively.…”

Section: Cnt Membranementioning

confidence: 99%

“…Inorganic membranes are characterized by high thermal, structural, and mechanical strength and high selectivity, but they have a low flux and high manufacturing costs. [194][195][196][197] These limitations can be overcome by using well-defined nanostructured materials such as zeolites, 198 MOF materials, 151 and carbon-based materials. 199,200 Nanomaterials are being developed for water treatment and desalination to meet the growing water demand worldwide.…”

Section: Cnt Membranementioning

confidence: 99%

“…Despite their high flux rates and selectivity, polymeric membranes often exhibit low resistance to organic solvents, high temperatures, and corrosive conditions. Inorganic membranes are characterized by high thermal, structural, and mechanical strength and high selectivity, but they have a low flux and high manufacturing costs 194‐197 . These limitations can be overcome by using well‐defined nanostructured materials such as zeolites, 198 MOF materials, 151 and carbon‐based materials 199,200 .…”

Section: Membranementioning

confidence: 99%

“…To prevent fouling, the membrane surface must be hydrophilic. CNTs are normally hydrophobic, but they can become hydrophilic by oxidizing in acid 194 . CNTs improve the mechanical strength of polymer membranes.…”

Section: Membranementioning

confidence: 99%

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A comprehensive review on membranes in microbial desalination cells; processes, utilization, and challenges

Ghasemi

Sedighi

Usefi

2022

Intl J of Energy Research

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Increasing populations and urbanization put a lot of pressure on freshwater supplies and use. The increased demand for drinking water can be met by using seawater as a source of freshwater. Desalination and wastewater treatment have been energy-and time-consuming processes in recent years. Microbial desalination cells (MDCs) have gained considerable attention as an emerging technology because of their ability to treat wastewater, desalinate seawater, and produce electricity and value-added products. The efficiency and performance of this technology are affected by numerous factors. In this study, the effect of membranes on the efficiency and performance of this technology is examined. Anionic and cationic, carbon nanotube (CNT), bipolar and osmotic membranes were investigated. Anionic and cationic membranes, as well as their modifications, significantly influence microbial desalination cells.CNT-based membranes have shown significant improvements in water permeability, desalination capacity, strength, anti-fouling, and energy efficiency compared to other membranes. Bipolar membranes prevent the pH of the anode chamber from decreasing, which is essential for MDC operation. The use of FO membranes in microbial desalination cells still faces challenges; for instance, fouling is more likely in FO membranes than ion-exchange membranes, resulting in higher internal resistance and decreased water flux. MDC technology will require research into membrane fouling, electron transfer kinetics, material feasibility, microbial growth, and catalyst durability to be scaled and sustainable. As part of the feasibility study, the performance and stability of the reactor must also be examined.

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Titanium Oxide Composites with Graphene and Laser-Induced Graphene for the Environmental Applications

Kumar

Srivastav

Singh

et al. 2021

Nanomaterials and Nanocomposites for Environmental Remediation

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Electrochemically active carbon nanotube (CNT) membrane filter for desalination and water purification

Cited by 11 publications

References 153 publications

Bioinspired and Post-Functionalized 3D-Printed Surfaces with Parahydrophobic Properties

Bioinspired and Post-Functionalized 3D-Printed Surfaces with Parahydrophobic Properties

A comprehensive review on membranes in microbial desalination cells; processes, utilization, and challenges

Titanium Oxide Composites with Graphene and Laser-Induced Graphene for the Environmental Applications

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