Nanocelluloses and their phosphorylated derivatives for selective adsorption of Ag+, Cu2+ and Fe3+ from industrial effluents

Liu, Peng; Borrell, Pere Ferrer; Božič, Mojca; Kokol, Vanja; Oksman, Kristiina; Mathew, Aji P.

doi:10.1016/j.jhazmat.2015.04.001

Cited by 329 publications

(153 citation statements)

References 39 publications

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“…Potentiometric titrations with 0.5 wt% suspensions of the phosphorylated CNF in water were performed using a twinburette instrument Mettler-Toledo T70 (Mettler-Toledo, Ljubljana-Dobrunje, Slovenia) under inert atmosphere (N 2 bubbling) as reported before (Liu et al 2015). Briefly, suspensions of CNF and acidic or alkali solutions, respectively, were prepared in MQ water with low carbonate content (\10 -5 mol L -1 ).…”

Section: Phosphate Content By Potentiometric Titrationmentioning

confidence: 99%

“…The utility of phosphorylated CNF nanopapers as adsorption membrane for the continuous removal of copper ions from aqueous solutions was demonstrated by filtration experiments. Cellulose nanofibrils, in particular those modified with phosphate groups, have already been demonstrated to adsorb heavy metal ions such as copper ions in static experiments with incubation times of several hours (Božič et al 2014;Liu et al 2014Liu et al , 2015. Yet, in real-time filtration experiments, the contact time between adsorbent and adsorbate is only seconds or even fractions of seconds, potentially allowing for a much faster and thus more efficient process.…”

Section: Nanopaper Permeance and Copper Adsorption Performancementioning

confidence: 99%

“…A solution of copper nitrate in deionized water at a concentration of 1 mmol L -1 , equivalent to 63.5 mg Cu(II) L -1 , corresponding to strongly copper contaminated water, similar to effluents from mirror industries (Liu et al 2015), was used to determine dynamic adsorption characteristics of CNF-P nanopapers. Since batch adsorption tests (Božič et al 2014) showed only limited heavy metal adsorption by CNF-0, CNF-0 nanopapers were not tested regarding their dynamic copper adsorption performance.…”

Section: Nanopaper Permeance and Copper Adsorption Performancementioning

confidence: 99%

“…Unfortunately, adsorption capacities of state-ofthe-art commercially available adsorbers could not yet be achieved (Fu and Wang 2011), which is due to the relatively low amount of phosphate groups in the CNF-P grade used (18.6 mmol kg -1 ). Nevertheless, if it becomes possible to prepare CNF with higher degrees of surface modification, increased adsorption capacities are anticipated Liu et al 2015). It was also found that the presence of equal concentrations of Ca 2?…”

Section: Nanopaper Permeance and Copper Adsorption Performancementioning

confidence: 99%

“…Thus, a material from a renewable resource is at hand which has the capacity to adsorb pollutants from aqueous solutions (Klemm et al 2011;Jonoobi et al 2012). Phosphatemodified CNF were recently shown to be particularly suitable as adsorbent for heavy metals (Božič et al 2014;Liu et al 2015). Anyhow, the problems associated with adsorbent materials, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Mautner

Maples

Kobkeatthawin

et al. 2016

Int. J. Environ. Sci. Technol.

118

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Copper is a major problem in industrial wastewater streams, seriously affecting the quality of potential drinking water. Several approaches, including continuous membrane processes or batch-wise application of adsorbents, are in use to tackle this problem. Unfortunately, these processes suffer from their particular drawbacks, such as low permeance or disposal of saturated adsorbents. However, a combination of these processes could constitute a step towards a more efficient copper removal solution. Here, we present a nanopaper ion-exchanger prepared from cellulose nanofibrils produced from fibre sludge, a paper industry waste stream, for the efficient, continuous removal of copper from aqueous solutions. This nanopaper ion-exchanger comprises phosphorylated cellulose nanofibrils that were processed into nanopapers by papermaking. The performance of these phosphorylated nanopaper membranes was determined with respect to their rejection of copper and permeance. It was shown that this new type of nanopaper is capable of rejecting copper ions during a filtration process by adsorption. Results suggest that functional groups on the surface of the nanopapers contribute to the adsorption of copper ions to a greater extent than phosphate groups within the bulk of the nanopaper. Moreover, we demonstrated that those nanopaper ion-exchangers could be regenerated and reused and that in the presence of calcium ions, the adsorption capacity for copper was only slightly reduced.

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Section: Phosphate Content By Potentiometric Titrationmentioning

confidence: 99%

Section: Nanopaper Permeance and Copper Adsorption Performancementioning

confidence: 99%

Section: Nanopaper Permeance and Copper Adsorption Performancementioning

confidence: 99%

Section: Nanopaper Permeance and Copper Adsorption Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Mautner

Maples

Kobkeatthawin

et al. 2016

Int. J. Environ. Sci. Technol.

118

View full text Add to dashboard Cite

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Valorization of Agricultural Wastes: A Step Toward Adoption of Smart Green Materials with Additional Benefit of Circular Economy

Jeet

Kumar

Anushree

et al. 2022

Handbook of Biomass Valorization for Industrial Applications

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Functionalized Cellulose for Water Purification, Antimicrobial Applications, and Sensors

Bethke

Palantöken

Andrei

et al. 2018

Adv Funct Materials

215

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As the most abundant natural polymer, cellulose presents a unique advantage for large-scale applications. To fully unlock its potential, the introduction of desired functional groups onto the cellulose backbone is required, which can be realized by either chemical bonding or physical surface interactions. This review gives an overview of the chemistry behind the state-of-the-art functionalization methods (e.g., oxidation, esterification, grafting) for cellulose in its various forms, from nanocrystals to bacterial cellulose. The existing and foreseeable applications of the obtained products are presented in detail, spanning from water purification and antibacterial action, to sensing, energy harvesting, and catalysis. A special emphasis is put on the interactions of functionalized cellulose with heavy metals, focusing on copper as a prime example. For the latter, its toxicity can either have a harmful influence on aquatic life, or it can be conveniently employed for microbial disinfection. The reader is further introduced to recent sensing technologies based on functionalized cellulose, which are becoming crucial for the near future especially with the emergence of the internet of things. By revealing the potential of water filters and conductive clothing for mass implementation, the near future of cellulose-based technologies is also discussed.not suitable for drinking water treatment in rural areas or not applicable on a large scale. Other methods involving materials which have high adsorption capacities for pollutants, for example activated charcoal have been explored. [27,28] Nevertheless, there are no universal adsorbents for all pollutants, meaning that superior alternatives are still required. In recent years, biodegradable adsorbents such as cellulose and chitosan have attracted much attention for the removal of heavy metals.In particular cellulose has a number of advantages, which include high abundance, low cost, easy access, nontoxicity and biodegradability. It is particularly suited for the removal of low concentrations of heavy metals which occur in contaminated ground or tap water. [26] Beyond the aspects of copper removal from water, in this review we indicate how the metal's increased toxicity for microbial life can present an advantage for medical applications. Moreover, we also take a closer look at further applications of functionalized cellulose, including catalysis and sensing, which can make a great impact regarding energy conversion and management. The inclusion of conductive cellulose sensors within the internet of things global network is of particular interest, since an accurate weather forecast can provide swift adjustments in the usage of the often intermittent renewable energy sources. In order to understand what confers functionalized cellulose its versatility for broad applications, we first exemplify the functionalization techniques on a molecular basis.

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Nanocelluloses and their phosphorylated derivatives for selective adsorption of Ag+, Cu2+ and Fe3+ from industrial effluents

Cited by 329 publications

References 39 publications

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Valorization of Agricultural Wastes: A Step Toward Adoption of Smart Green Materials with Additional Benefit of Circular Economy

Functionalized Cellulose for Water Purification, Antimicrobial Applications, and Sensors

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