Enhanced performance of celluloce acetate/polyethylene glycol (CA/PEG) with the addition of functionalized carbon nanotube (CNT) prepared by wet-dry method

Nurkhamidah, Siti; Rahmawati, Yuli; Gumilang, Rizal Andhika; Riswanda, Moch.Ilham; Fahrizal, Yusril Eka; Ramadhan, I. H.

doi:10.1063/1.5088289

Cited by 3 publications

(2 citation statements)

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“…In addition, random distribution and a small number of CNTs could not function well for desalination [126]. Furthermore, of note is that the presence of CNTs in the optimum membrane enhances the pure water flux [127,128] with accepted water content percent and swelling percent [91]. For example, the PA layer in combination with the top surface of the high flux outer-wall CNT membrane exhibits an outstanding performance for desalination due to the ultra-dense porosity and hydrophobicity of the outer-wall CNTs [128].…”

Section: Effects Of Cnt Addition For Desalinationmentioning

confidence: 99%

Recent Advances in Applications of Carbon Nanotubes for Desalination: A Review

et al. 2020

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As a sustainable, cost-effective and energy-efficient method, membranes are becoming a progressively vital technique to solve the problem of the scarcity of freshwater resources. With these critical advantages, carbon nanotubes (CNTs) have great potential for membrane desalination given their high aspect ratio, large surface area, high mechanical strength and chemical robustness. In recent years, the CNT membrane field has progressed enormously with applications in water desalination. The latest theoretical and experimental developments on the desalination of CNT membranes, including vertically aligned CNT (VACNT) membranes, composited CNT membranes, and their applications are timely and comprehensively reviewed in this manuscript. The mechanisms and effects of CNT membranes used in water desalination where they offer the advantages are also examined. Finally, a summary and outlook are further put forward on the scientific opportunities and major technological challenges in this field.

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Section: Effects Of Cnt Addition For Desalinationmentioning

confidence: 99%

Recent Advances in Applications of Carbon Nanotubes for Desalination: A Review

et al. 2020

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“…One of the most widely investigated types of nanofillers involves carbon nanotubes (CNTs), and investigations have aimed at understanding their effects on filtration performance, mechanical stability, and morphology changes. CNTs have been added in different amounts to different types of polymer matrices [ 15 , 16 ] and thin film composites [ 17 , 18 ] for a wide range of applications, including RO desalination [ 19 ], forward osmosis desalination [ 20 , 21 ], and contaminant filtration [ 22 , 23 ]. The general effects of CNTs on nanocomposite membranes is the change in morphology, porosity, and macrovoid formation, with potentially new channels available for solvent passage through the CNTs in addition to roughness and hydrophilicity changes.…”

Section: Introductionmentioning

confidence: 99%

Studying the Effect of Shortening Carbon Nanotubes via Ball Milling on Cellulose Acetate Nanocomposite Membranes for Desalination Applications

2022

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Studying the effect of different sizes of multi-walled carbon nanotubes (CNTs) on mixed matrix membranes in nanofiltration applications has not been widely reported in the literature. In this study, two different lengths of functionalized CNTs were used to investigate such effect. First, CNTs were shortened by using high-energy ball milling at 400 RPM, with a ball-to-powder weight ratio (BPR) of 120:1. Characterization of the structure of the CNTs was carried out using TEM, XRD, SEM, BET, and Raman Spectroscopy. Second, 0.001 wt % of unmilled and milled CNTs were incorporated into cellulose acetate nanocomposite membranes, Eli-0 (unmilled), and Eli-400 (milled at 400 RPM) to study their effects on the membranes’ morphology, porosity, hydrophilicity, and performance analysis in terms of permeation and salt retention rates of 5000 ppm Na2SO4. Results showed that shortening CNTs enhanced the membranes’ hydrophilicity and affected macrovoid and micropore formation. Furthermore, shortening CNTs resulted in opening their caps and improved the permeation rates with a slight adverse effect on salt retention.

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