Nanocellulose‐Enabled Membranes for Water Purification: Perspectives

Sharma, Priyanka R.; Sharma, Sunil K.; Lindström, Tom; Hsiao, Benjamin S.

doi:10.1002/adsu.201900114

Cited by 141 publications

(109 citation statements)

References 229 publications

(305 reference statements)

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“…Applications related to water treatment include fluoride removal membranes, substrates to remove humic acid, separation of xenotropic murine leukemia virus, and separation of metal ions and dyes. [37][38][39][40][41][42][43] Ultrafine CNFs can be fabricated to CNF membrane Fig. 10 Classification of pressure-driven membrane filtration, and their pore size and pressure relationship.…”

Section: Nanocellulose-based Membranesmentioning

confidence: 99%

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Nanocellulose-based composite materials for wastewater treatment and waste-oil remediation

Yuan¹,

Ling²,

Murugadoss³

et al. 2020

ES Food Agrofor.

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This review highlights the latest research studies about the use of lignocellulosic nanocellulose-based composites in the applications of wastewater treatment and waste-oil remediation. Three types of composites are described, including nanocellulose-based aerogels, nanocellulose-based membranes, and new wood-based morph-genetic materials. The fabrication and modification techniques to prepare these composites are introduced. The effectiveness and efficiency of these composites in the adsorption of heavy metal ions, dyes, and micropollutants, separation of oil and water, and catalytic degradation of organic pollutants are discussed, respectively. In addition, the challenges and opportunities of nanocellulose-based composites in these areas and the future research directions of lignocellulosic nanocellulose composites for wastewater treatment and waste-oil remediation are addressed.

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Section: Nanocellulose-based Membranesmentioning

confidence: 99%

Section: Nanocellulose-based Membranesmentioning

confidence: 99%

Nanocellulose-based composite materials for wastewater treatment and waste-oil remediation

Yuan¹,

Ling²,

Murugadoss³

et al. 2020

ES Food Agrofor.

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“…In addition, because of its high specific surface area, the adsorption capacity of nanocellulose is high, which can be further enhanced by chemical modification. Therefore, it has great potential as adsorption materials in purification and filtration membranes and other fields [ 45 , 46 , 47 ]. Each type of nanocellulose (CNC, CNF, CMC and CMF) brings new properties.…”

Section: Introductionmentioning

confidence: 99%

Research Progress and Development Demand of Nanocellulose Reinforced Polymer Composites

Shen

Xue

et al. 2020

Polymers

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Nanocellulose is a type of nanomaterial with high strength, high specific surface area and high surface energy. Additionally, it is nontoxic, harmless, biocompatible and environmentally friendly and can be extracted from biomass resources. The surface groups of cellulose show high surface energy and binding activity on the nanoscale and can be modified by using various methods. Because nanocellulose has a high elastic modulus, rigidity and a low thermal expansion coefficient, it is an excellent material for polymer reinforcement. This paper summarizes the reinforcement mechanisms of nanocellulose polymer composites with a focus on the role of theoretical models in elucidating these mechanisms. Furthermore, the influence of various factors on the properties of nanocellulose reinforced polymer composites are discussed in combination with analyses and comparisons of specific research results in related fields. Finally, research focus and development directions for the design of high-performance nanocellulose reinforced polymer composites are proposed.

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“…The published works so far regarding making films from cellulose nanocrystals for ultrafiltration applications have focused on their use as self-standing nanopaper sheets 5 , thin films over cellulose nanofibers 6 , thin films over filter paper and comparing them to cellulose nanofibers 7 , and thin-layer films over polyethersulfone and comparing them to cellulose nanofibers 8 . However, cellulose nanofibers were used for making thin-film membranes in more studies 3,[9][10][11] , in addition to their use as additives in other polymeric matrices to improve the properties of prepared membranes 3,12 .…”

mentioning

confidence: 99%

“…The literature survey mentioned above reveals that cellulose nanofibers used in making membranes were extracted from bleached cellulose pulp fibers, i.e., fibers mostly from cellulose and some hemicelluloses but without or with very little lignin 3,[9][10][11] . A common challenge associated with membrane preparation from cellulose nanofibers is formation of compact films of these nanofibers upon drying as a result of extensive hydrogen bonding between hydroxyl groups at their surfaces.…”

mentioning

confidence: 99%

Water purification ultrafiltration membranes using nanofibers from unbleached and bleached rice straw

Hassan

Fadel

Abou-Zeid

et al. 2020

Sci Rep

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There has been an increasing interest in recent years in isolating cellulose nanofibers from unbleached cellulose pulps for economic, environmental, and functional reasons. In the current work, cellulose nanofibers isolated from high-lignin unbleached neutral sulfite pulp were compared to those isolated from bleached rice straw pulp in making thin-film ultrafiltration membranes by vacuum filtration on hardened filter paper. The prepared membranes were characterized in terms of their microscopic structure, hydrophilicity, pure water flux, protein fouling, and ability to remove lime nanoparticles and purify papermaking wastewater effluent. Using cellulose nanofibers isolated from unbleached pulp facilitated the formation of a thin-film membrane (with a shorter filtration time for thin-film formation) and resulted in higher water flux than that obtained using nanofibers isolated from bleached fibers, without sacrificing its ability to remove the different pollutants. Membranes are used in a wide variety of industries for removing undesirable materials from different media. Among them, those that depend on separation based on the size of materials to be removed, e.g., micro-, ultra-and nano-filtration membranes, are manufactured using different polymers; generating pores within these membranes with targeted size is the key for their use 1. Using cellulose and its derivatives for making membranes for use in micro-and ultrafiltration is well known at the commercial level 2. Cellulosic membranes are usually prepared using casting technique, which depends on the dissolution of cellulosic materials in suitable solvents, followed by film formation by immersion in a non-solvent. This technique requires use of large amounts of solvents; their recovery is important for economic and environmental reasons. Since the emergence of nanocellulosic materials, e.g., cellulose nanofibers and cellulose nanocrystals, increasing research is ongoing regarding their use in the area of membranes. Two approaches have been investigated for use of nanocellulose in that area so far 3. The first approach is through their incorporation in other polymer matrices to improve the performance of prepared membranes. Dissolving the polymers in suitable solvents and also good dispersion of nanocellulosic materials in the polymer solution are necessary before film casting. The second approach studied, which is more favorable and interesting, is to make membranes from a layer of nanocellulose with adequate porosity over other polymeric supports without the need to dissolve the cellulose and to use the film casting technique to generate porosity. The second approach was first introduced by Ma et al. 4 ; it depends on the correlations between pore size distribution of a nonwoven layer structure and bulk porosity. According to this approach, the pore size of a film made from fibers can be adjusted by controlling the fiber diameter. It was also proved through a study of the pore size of films made from electrospun nanofibers that the mean pore size was found t...

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Nanocellulose‐Enabled Membranes for Water Purification: Perspectives

Cited by 141 publications

References 229 publications

Nanocellulose-based composite materials for wastewater treatment and waste-oil remediation

Nanocellulose-based composite materials for wastewater treatment and waste-oil remediation

Research Progress and Development Demand of Nanocellulose Reinforced Polymer Composites

Water purification ultrafiltration membranes using nanofibers from unbleached and bleached rice straw

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