Cationic cellulose nanofibers from waste pulp residues and their nitrate, fluoride, sulphate and phosphate adsorption properties

Sehaqui, Houssine; Mautner, Andreas; Larraya, Uxua Pérez de; Pfenninger, Numa; Tingaut, Philippe; Zimmermann, Tanja

doi:10.1016/j.carbpol.2015.08.091

Cited by 155 publications

(73 citation statements)

References 46 publications

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“…As expected, the adsorption capacities of all the anions increased with the surface charge density of CNFs. Cationic CNFs displayed a higher selectivity toward multivalent ions (PO 4 3− and SO 4 2− ) than monovalent ions (F − and NO 3 − ) [23]. Figure 5 shows that cationic CNFs obtained through reaction of cellulose with EPTMAC, and subsequent mechanical disintegration, displayed a high and fast uptake of humic acid, a common organic pollutant [78].…”

Section: Sorption Of Pollutants By Functionalized Nanocellulosementioning

confidence: 99%

“…This opens up the possibility to control the pore sizes, and, accordingly, the presence and molecular weight cut-off of the resulting membranes by using nanocellulose with different fibril diameters. Membranes produced by the Nano paper method have been shown to effectively remove metal ions (Cu 2+ , Ag + , Fe 3+ ), nitrates, fluorides, phosphates, sulfates, humic acid, and organic compounds [23,87,88,89]. …”

Section: Nanocellulose-based Water Purification Membranes and Filtersmentioning

confidence: 99%

“…This increase in surface area is related to an increase in the availability of the hydroxyl groups on the surface of nanocellulose, where functional groups or molecules can be grafted using, for example, carboxylation, sulfonation, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)-mediated oxidation, phosphorylation, esterification, etherification, silyation, and amidation [6,16,17,18,19]. Indeed, previous work has demonstrated how carboxyl groups, sulfonate groups, and phosphonate groups can be grafted onto nanocellulose for the selective uptake of contaminants [20] in water remediation [17,21,22,23]. Nanocellulose-based membranes and filters have been shown to remove metal ions [4,24,25], dyes [26,27,28], metal [28,29,30] and microbes [28,30].…”

Section: Introductionmentioning

confidence: 99%

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Nanocellulose-Based Materials for Water Purification

et al. 2017

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Nanocellulose is a renewable material that combines a high surface area with high strength, chemical inertness, and versatile surface chemistry. In this review, we will briefly describe how nanocellulose is produced, and present—in particular, how nanocellulose and its surface modified versions affects the adsorption behavior of important water pollutants, e.g., heavy metal species, dyes, microbes, and organic molecules. The processing of nanocellulose-based membranes and filters for water purification will be described in detail, and the uptake capacity, selectivity, and removal efficiency will also be discussed. The processing and performance of nanocellulose-based membranes, which combine a high removal efficiency with anti-fouling properties, will be highlighted.

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Section: Sorption Of Pollutants By Functionalized Nanocellulosementioning

confidence: 99%

Section: Nanocellulose-based Water Purification Membranes and Filtersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanocellulose-Based Materials for Water Purification

et al. 2017

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“…Owing to its high functionality, unique morphology and amenability and inexhaustible attributes, cellulose has been expected to become a key source of sustainable materials. However, its general and technological applications have been limited due to relative insolubility in water and organic solvents as well as unsatisfactory adsorption properties (Sehaqui et al, 2016). Hence, there is a need to improve the surface area and active sites of cellulose in order to further enhance its adsorption properties.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of core–shell structured magnetic nanocellulose base polymeric ionic liquid for effective biosorption of Congo red dye

Beyki

Bayat

Shemirani

2016

Bioresource Technology

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“…In recent years, a series of researches using environmentally friendly methods for water treatment, such as the removal of algae or eutrophic substances and heavy metals, have been intensively studied [22][23][24][25][26][27][28]. As a few examples, Pan et al demonstrated that the cationic starch using corn achieves effective removal of algal cells by means of charge neutralization [22].…”

Section: Introductionmentioning

confidence: 99%

Effect by Alkaline Flocculation of Algae and Phosphorous from Water Using a Calcined Waste Oyster Shell

Nam

Choi²,

Lee

et al. 2017

Water

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Alkaline flocculation has been considered as a potential candidate to remove algae and eutrophic substances from water. A number of researches using low-cost and environmentally friendly methods have been suggested to optimize removal efficiency. In this study, a calcium-containing waste oyster shell, as an environmentally friendly substance, has been used to treat phosphorous, a eutrophic substance, and to remove algae from the fresh water simultaneously. The X-ray Fluorescence (XRF) analysis showed that CaO was a major phase in a raw oyster shell, which played an important role for flocculation of phosphorous as well as algae. In order to eliminate the algae or phosphorous effectively, oyster shell was calcined at 1000 • C and hydrated in water. The slurry of hydrated calcined oyster shell, from 5 g/L to 12.5 g/L, was utilized in this experiment, where the experimental results were compared with that of dolomite. A series of experimental investigations, such as pH and turbidity changes using the water quality analyzer and UV-Visible spectroscopy (UV-Vis), demonstrated that the algae were efficiently removed. In addition, total phosphorous (TP) and total nitrogen (TN) analyses at different amounts of slurries of the hydrated calcined oyster shell showed that almost all the phosphorous was removed at 7.5 g/L of hydrated oyster shell, but due to the high solubility of nitrogen compounds, no obvious effect for the removal of nitrogen was observed. Furthermore, powder X-ray diffractions (PXRD) showed that Ca(OH) 2 compounds were transformed to the phosphate compound, suggesting that the oyster shell caused flocculation by chemically forming with phosphorous ions.

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Cationic cellulose nanofibers from waste pulp residues and their nitrate, fluoride, sulphate and phosphate adsorption properties

Cited by 155 publications

References 46 publications

Nanocellulose-Based Materials for Water Purification

Nanocellulose-Based Materials for Water Purification

Fabrication of core–shell structured magnetic nanocellulose base polymeric ionic liquid for effective biosorption of Congo red dye

Effect by Alkaline Flocculation of Algae and Phosphorous from Water Using a Calcined Waste Oyster Shell

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