Nanofibrous alginate membrane coated with cellulose nanowhiskers for water purification

Mokhena, Teboho Clement; Jacobs, Nokwindla Valencia; Luyt, A. S.

doi:10.1007/s10570-017-1541-1

Cited by 45 publications

(28 citation statements)

References 42 publications

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“…In the study, as prepared composite membrane exhibited remarked mechanical properties with the removal capability of 7-40 nm particles. In a similar manner, Mokhena et al reported the membranes composed of double-layered nanofibrous alginate coated with CNWs [48]. Reinforced composite membranes were observed to be capable of completely removing water contaminants of size range 10-100 nm particles.…”

Section: Filtration-processed Wastewater Treatments Of Cbnsmentioning

confidence: 78%

Cellulose-Based Nanomaterials for Water Pollutant Remediation: Review

Yusuf

2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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In the present scenario, green nanomaterials and nanocomposites have been developed and utilized for environmental applications. They can minimize adverse environmental impacts with enhanced eco-friendliness, sustainability, and applicability, and are the eco-friendly solutions in regards the need of current era. Green polymer nanocomposites, generated from the renewable sources (i.e., animals, plants, and microbes) have received a great attention for various environmental applications to maintain sustainable world. There are many varieties of CBNs have been synthesized and nanotechnology in particular has wide applications including wastewater treatment due to their high surface-to-volume, functionalization, and ecofriendly nature. This review highlights the aspects of cellulose-based nanomaterials (CBNs) for pollutant remediation from wastewater.

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Section: Filtration-processed Wastewater Treatments Of Cbnsmentioning

confidence: 78%

Cellulose-Based Nanomaterials for Water Pollutant Remediation: Review

Yusuf

2020

Handbook of Nanomaterials and Nanocomposites for Energy and Environmental Applications

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“…The membrane exhibited high flux of approximately 32.95 L/m 2 hr and a rejection rate of approximately 98.20%. The removal of Congo red (CR) dye by the adsorption process onto electrospun alginate crosslinked with glutaraldehyde was reported by Mokhena and Luyt [37]. They reported a maximum removal of more than 95%, which was associated with ionic interaction between the surface carboxyl groups and amino groups in the CR as well as the large surface area.…”

Section: Filtration Membranesmentioning

confidence: 91%

“…Another suitable route for the electrospinning alginate involves the use of the co-solvent system and surfactant with the aim of increasing the content of alginate in the electrospinnable blend [28,[35][36][37][38][39][40][41]. The presence of these components reduces the solution surface tension, as well as the conductivity and rigidity of the alginate, thereby resulting in bead-free fibers.…”

Section: Co-solvent/surfactant and Carrier Polymersmentioning

confidence: 99%

“…The coating of cellulose nanowhiskers improved the integrity of the membrane and enhanced the retention capacity to 98.4%. Similarly, coating with chitosan or chitosan/silver nanoparticles (AgNPs) onto electrospun alginate nanofibers enhanced the oil retention from 33% to approximately 94% [37]. This was ascribed to the formation of compact structure by coating these materials and thereby reducing the surface porosity of alginate nanofibers and hence improving oil removal.…”

Section: Filtration Membranesmentioning

confidence: 99%

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Electrospun Alginate Nanofibers Toward Various Applications: A Review

et al. 2020

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Alginate has been a material of choice for a spectrum of applications, ranging from metal adsorption to wound dressing. Electrospinning has added a new dimension to polymeric materials, including alginate, which can be processed to their nanosize levels in order to afford unique nanostructured materials with fascinating properties. The resulting nanostructured materials often feature high porosity, stability, permeability, and a large surface-to-volume ratio. In the present review, recent trends on electrospun alginate nanofibers from over the past 10 years toward advanced applications are discussed. The application of electrospun alginate nanofibers in various fields such as bioremediation, scaffolds for skin tissue engineering, drug delivery, and sensors are also elucidated.

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“…CNMs can be extracted from different natural sources (wood, non-woody and animals materials), either by mechanical treatment and acid hydrolysis or combination of the two. They can be categorized into five classes, viz., cellulose nanofibers (CNF), cellulose nanocrystals (CNCs), bacterial cellulose (BC), algal cellulose (AC), tunicate cellulose depending on the source and extraction method as discussed below [10][11][12][13].…”

mentioning

confidence: 99%

Processing of Thermoplastic PLA/Cellulose Nanomaterials Composites

Mokhena¹,

Sefadi²,

Sadiku³

et al. 2018

Preprint

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Over the past decades, research has escalated on the use of polylactic acid (PLA) as replacement for petroleum-based polymers. This is due to its valuable properties, such as renewability, biodegradability, biocompatibility and good thermomechanical properties. Despite possessing good mechanical properties comparable to conventional petroleum-based polymers, PLA suffers from some shortcomings such as low thermal resistance, heat distortion temperature and rate of crystallization, thus different fillers have been used to overcome these limitations. In the frame work of environmentally friendly processes and products, there has been growing interest on the use of cellulose nanomaterials viz. cellulose nanocrystals (CNC) and nanofibers (CNF) as natural fillers for PLA towards advanced applications other than short-term packaging and biomedical. Cellulosic nanomaterials are renewable in nature, biodegradable, eco-friendless and they possess high strength and stiffness. In the case of eco-friendly processes, various conventional processing techniques, such as melt extrusion, melt-spinning, and compression moulding, have been used to produce PLA composites. This review addresses the critical factors in the manufacturing of PLA-cellulosic nanomaterials by using conventional techniques and recent advances needed to promote and improve the dispersion of the cellulosic nanomaterials. Different aspects, including morphology, mechanical behavior and thermal properties, as well as comparisons of CNC- and CNF reinforced PLA, are also discussed

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Nanofibrous alginate membrane coated with cellulose nanowhiskers for water purification

Cited by 45 publications

References 42 publications

Cellulose-Based Nanomaterials for Water Pollutant Remediation: Review

Cellulose-Based Nanomaterials for Water Pollutant Remediation: Review

Electrospun Alginate Nanofibers Toward Various Applications: A Review

Processing of Thermoplastic PLA/Cellulose Nanomaterials Composites

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