Modified Cellulose Fibres as a Biosorbent for the Organic Pollutants

Boufi, Sami; Alila, Sabrine

doi:10.1002/9781118164792.ch17

Cited by 7 publications

(4 citation statements)

References 43 publications

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“…3. The absorption peak of loofah fiber at 3336.7 cm À 1 may be due to the presence of -OH group on the surface of loofah fiber [17], the bands at 2892.5 cm À 1 , 897.0 cm À 1 and 1018.0 cm À 1 are assigned to C-H stretching vibrations, ß-glucosidic linkage and C-O, C-C stretching vibrations or C-OH bending in hemicelluloses, respectively [12]. The FT-IR of AGL shows a new band at 1695.7 cm À 1 (the stretching vibration of C ¼O), which is due to grafting from AA [18].…”

Section: Resultsmentioning

confidence: 98%

Simple preparation and enhanced adsorption properties of loofah fiber adsorbent by ultraviolet radiation graft

et al. 2015

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Section: Resultsmentioning

confidence: 98%

Simple preparation and enhanced adsorption properties of loofah fiber adsorbent by ultraviolet radiation graft

et al. 2015

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“…The only difference between CTS and CLS is the functionality at C-2 of the anhydro glucose unit. The inherent intra/intermolecular hydrogen bond networks of CLS biopolymer affords the formation of partially crystalline and amorphous regions which limits its solubility [91]. However, studies [71,88,92] has shown that the use of mixed solvent systems ranging from alkali/urea solutions [93][94][95] to ionic liquids (ILs) [96][97][98] affords the preparation of CLS hydrogels for various industrial applications.…”

Section: Metal-based Liss Granulated With Cellulosementioning

confidence: 99%

Granulation of Lithium-Ion Sieves (LISs) Using Biopolymers: A Review

Udoetok,

Karoyo,

Ubuo

et al. 2024

Preprint

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The high demand for lithium (Li) relates to clean renewable storage devices and the advent of electric vehicles (EVs). The extraction of Li ions from aqueous media calls for efficient adsorbent materials with various characteristics, such as good adsorption capacity, good selectivity, easy isolation of the Li-loaded adsorbent, and good recovery of the adsorbed Li ions. The widespread use of metal-based adsorbent materials for Li ions extraction relates to various factors: (i) the ease of preparation via inexpensive and facile templation techniques, (ii) excellent selectivity for Li ions in a matrix, (iii) high recovery of the adsorbed ions, and (iv) good cycling performance of the adsorbents. However, the use of nano-sized metal-based LISs is limited due to challenges associated with isolating the loaded adsorbent material from the aqueous media. Adsorbent granulation process employing various binding agents (e.g., biopolymers, synthetic polymers, and inorganic materials) affords functional particles with modified morphological and surface properties that support easy isolation from the aqueous phase upon adsorption of Li ions. Biomaterials (e.g., chitosan, cellulose, alginate, and agar) are of particular interest because their structural diversity renders them amenable to coordination interactions with metal-based LISs to form 3D microcapsules. The current review highlights recent progress in the use of biopolymer binding agents for the granulation of metal-based LISs, along with various crosslinking strategies employed to improve the mechanical stability of the granules. The study reviews the effects of granulation and crosslinking on adsorption capacity, selectivity, isolation, recovery, cycling performance and the stability of the LISs. Adsorbent granulation using biopolymer binders has been reported to modify the uptake properties of the bio-adsorbent materials to varying degrees, in accordance with the surface and textural properties of the binding agent. The review further highlights the importance of granulation and crosslinking for improving the extraction process of Li ions from aqueous media. This review contributes to manifold areas related to industrial application of LISs, as follows: 1) to highlight recent progress in the granulation and crosslinking of metal-based adsorbents for Li ions recovery, 2) to highlight the advantages, challenges, and knowledge gaps of using biopolymer-based binders for granulation of LISs, and finally, 3) to catalyze further research interest into the use of biopolymer binders and various crosslinking strategies to engineer functional adsorbent materials for application in Li extraction industry. Properly engineered extractants for Li ions are expected to offer various cost benefits in terms of capital expenditure, percent Li recovery, and reduced environmental footprint.

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“…The only difference between CTS and CLS is the functionality at C-2 of the anhydro glucose unit. The inherent intra/intermolecular hydrogen bond networks of CLS biopolymer afford the formation of partially crystalline and amorphous regions, which limits its solubility [ 89 ]. However, studies [ 69 , 86 , 90 ] have shown that the use of mixed solvent systems ranging from alkali/urea solutions [ 91 , 92 , 93 ] to ionic liquids (ILs) [ 94 , 95 , 96 ] affords the preparation of CLS hydrogels for various industrial applications.…”

Section: Granulation Of Lissmentioning

confidence: 99%

Granulation of Lithium-Ion Sieves Using Biopolymers: A Review

Udoetok,

Karoyo,

Ubuo

et al. 2024

Polymers

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The high demand for lithium (Li) relates to clean, renewable storage devices and the advent of electric vehicles (EVs). The extraction of Li ions from aqueous media calls for efficient adsorbent materials with various characteristics, such as good adsorption capacity, good selectivity, easy isolation of the Li-loaded adsorbents, and good recovery of the adsorbed Li ions. The widespread use of metal-based adsorbent materials for Li ions extraction relates to various factors: (i) the ease of preparation via inexpensive and facile templation techniques, (ii) excellent selectivity for Li ions in a matrix, (iii) high recovery of the adsorbed ions, and (iv) good cycling performance of the adsorbents. However, the use of nano-sized metal-based Lithium-ion sieves (LISs) is limited due to challenges associated with isolating the loaded adsorbent material from the aqueous media. The adsorbent granulation process employing various binding agents (e.g., biopolymers, synthetic polymers, and inorganic materials) affords composite functional particles with modified morphological and surface properties that support easy isolation from the aqueous phase upon adsorption of Li ions. Biomaterials (e.g., chitosan, cellulose, alginate, and agar) are of particular interest because their structural diversity renders them amenable to coordination interactions with metal-based LISs to form three-dimensional bio-composite materials. The current review highlights recent progress in the use of biopolymer binding agents for the granulation of metal-based LISs, along with various crosslinking strategies employed to improve the mechanical stability of the granules. The study reviews the effects of granulation and crosslinking on adsorption capacity, selectivity, isolation, recovery, cycling performance, and the stability of the LISs. Adsorbent granulation using biopolymer binders has been reported to modify the uptake properties of the resulting composite materials to varying degrees in accordance with the surface and textural properties of the binding agent. The review further highlights the importance of granulation and crosslinking for improving the extraction process of Li ions from aqueous media. This review contributes to manifold areas related to industrial application of LISs, as follows: (1) to highlight recent progress in the granulation and crosslinking of metal-based adsorbents for Li ions recovery, (2) to highlight the advantages, challenges, and knowledge gaps of using biopolymer-based binders for granulation of LISs, and finally, (3) to catalyze further research interest into the use of biopolymer binders and various crosslinking strategies to engineer functional composite materials for application in Li extraction industry. Properly engineered extractants for Li ions are expected to offer various cost benefits in terms of capital expenditure, percent Li recovery, and reduced environmental footprint.

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Modified Cellulose Fibres as a Biosorbent for the Organic Pollutants

Cited by 7 publications

References 43 publications

Simple preparation and enhanced adsorption properties of loofah fiber adsorbent by ultraviolet radiation graft

Simple preparation and enhanced adsorption properties of loofah fiber adsorbent by ultraviolet radiation graft

Granulation of Lithium-Ion Sieves (LISs) Using Biopolymers: A Review

Granulation of Lithium-Ion Sieves Using Biopolymers: A Review

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