Fabrication of glycine-functionalized maghemite nanoparticles for magnetic removal of copper from wastewater

Feitoza, Natálie C.; Gonçalves, Thamires D.; Mesquita, Jéssica J.; Menegucci, Jucely S.; Santos, Mac-Kedson Medeiros Salviano; Chaker, Juliano Alexandre; Cunha, Ricardo B.; Medeiros, Anderson M. M. S.; Rubim, Joel C.; Sousa, Marcelo Henrique

doi:10.1016/j.jhazmat.2013.11.022

Cited by 96 publications

(23 citation statements)

References 43 publications

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“…Obviously, the competition effect of protons (in terms of chelation and ion-exchange/electrostatic attraction properties on carboxylic and amine moieties) is stronger at low pH values and the sorption capacities are relatively low while the progressive deprotonation of these reactive groups improves metal binding. Feitoza et al [44] discussed the sorption of copper on glycine-coated maghemite and correlated the sorption to the balance in charges between sorbent and metal ions: at low pH, the presence of free copper (i.e., Cu 2+ ) and positively-charged reactive groups (carboxylic acid and amine groups) causes an electrostatic repulsion and limited metal binding. On the opposite hand while increasing the pH, this repulsion effect is progressively minimized with metal binding occurring between positively-charged nanoparticles and negatively-charged copper hydrolyzed species.…”

Section: Resultsmentioning

confidence: 99%

Functionalization of Magnetic Chitosan Particles for the Sorption of U(VI), Cu(II) and Zn(II)—Hydrazide Derivative of Glycine-Grafted Chitosan

et al. 2017

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A new magnetic functionalized derivative of chitosan is synthesized and characterized for the sorption of metal ions (environmental applications and metal valorization). The chemical modification of the glycine derivative of chitosan consists of: activation of the magnetic support with epichlorohydrin, followed by reaction with either glycine to produce the reference material (i.e., Gly sorbent) or glycine ester hydrochloride, followed by hydrazinolysis to synthesize the hydrazide functionalized sorbent (i.e., HGly sorbent). The materials are characterized by titration, elemental analysis, FTIR analysis (Fourrier-transform infrared spectrometry), TGA analysis (thermogravimetric analysis) and with SEM-EDX (scanning electron microscopy coupled to energy dispersive X-ray analysis). The sorption performances for U(VI), Cu(II), and Zn(II) are tested in batch systems. The sorption performances are compared for Gly and HGly taking into account the effect of pH, the uptake kinetics (fitted by the pseudo-second order rate equation), and the sorption isotherms (described by the Langmuir and the Sips equations). The sorption capacities of the modified sorbent reach up to 1.14 mmol U g−1, 1.69 mmol Cu g−1, and 0.85 mmol Zn g−1. In multi-metal solutions of equimolar concentration, the chemical modification changes the preferences for given metal ions. Metal ions are desorbed using 0.2 M HCl solutions and the sorbents are re-used for five cycles of sorption/desorption without significant loss in performances.

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Section: Resultsmentioning

confidence: 99%

Functionalization of Magnetic Chitosan Particles for the Sorption of U(VI), Cu(II) and Zn(II)—Hydrazide Derivative of Glycine-Grafted Chitosan

et al. 2017

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“…hydroxide, sulphide or chelating precipitation, as well as ion-exchange or adsorption (Wan Ngah et al 2002;Akar et al 2009;Zhu and Li 2015;Jain et al 2016), e.g. with activated carbon, carbon nanotubes, magnetic nanoparticles (Feitoza et al 2014), low-cost adsorbents from industrial waste streams (Castaldi et al 2015;Cretescu et al 2015) or bioadsorbents (Davis et al 2003;Deng et al 2013;Hokkanen et al 2013;Shaheen et al 2013;Bansal et al 2014;Ş en et al 2015;Komkiene and Baltrenaite 2016). Furthermore, membrane filtration processes (Ujang and Anderson 1996;Qdais and Moussa 2004) such as ultrafiltration, nanofiltration, reverse osmosis or electrodialysis are utilized.…”

Section: Introductionmentioning

confidence: 99%

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Mautner

Maples

Kobkeatthawin

et al. 2016

Int. J. Environ. Sci. Technol.

116

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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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“…However, some of these techniques present significant demerits such as high operation cost, regeneration of resin, loss of adsorbent material, membrane fouling and high sludge production which hinder their optimal use [1,8,9]. Due to the risk and dangers associated with high copper concentrations in water bodies, various government authorities have stringently regulated the discharge of copper into water bodies.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the effect of two support materials on copper removal from aqueous solution in the activated sludge process

Kutty

Ezechi

Khaw

et al. 2015

WIT Transactions on Ecology and the Environment

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Two support materials, microwave incinerated rice husk ash (MIRHA) and groundwater treatment plant sludge (GWTPS), were used as support materials for biomass in the removal of copper from aqueous solution during a continuous flow study. A third reactor containing biomass alone without the addition of support material (RB) was used as a control to monitor the performance of the support materials. All reactors were given 15 days for the acclimatization of biomass. The reactors containing MIRHA and GWTPS were given an additional 10 days for acclimation after the addition of the support materials on day 15. All reactors were identically designed with a size of 8.5 L and operated at a flowrate of 7 L/d and SRT of 30 days across 8 different phases. Different concentrations of Cu(II) ranging from 0.5 mg/L to 15 mg/L were applied to the reactors at different phases. Results obtained from each phase of the experiments showed that GWTPS and MIRHA improved copper toxicity resistance in their respective reactors. For the control reactor (RB), copper toxicity was significant and violated the DOE Malaysia copper effluent standard at phase 5 (influent concentration 2 mg/L) whereas MIRHA and GWTPS reactors violated the DOE Malaysia copper effluent standard at phase 7 (influent concentration 10 mg/L) respectively. However, GWTPS containing reactor showed slightly better support for toxicity resistance than reactor MIRHA. The toxicity of copper on the three reactors was observed in the reduction of mixed liquor volatile suspended solids (MLVSS) within each reactor. For the control, MLVSS rapidly decreased from phase 3 to phase 8 whereas MIRHA and GWTPS reactors increased from phase 3 to phase 6 and decreased from phase 7 to phase 8. These results have shown that MIRHA and GWTPS have the potential of improving biomass resistance to toxicity of heavy metals.

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Fabrication of glycine-functionalized maghemite nanoparticles for magnetic removal of copper from wastewater

Cited by 96 publications

References 43 publications

Functionalization of Magnetic Chitosan Particles for the Sorption of U(VI), Cu(II) and Zn(II)—Hydrazide Derivative of Glycine-Grafted Chitosan

Functionalization of Magnetic Chitosan Particles for the Sorption of U(VI), Cu(II) and Zn(II)—Hydrazide Derivative of Glycine-Grafted Chitosan

Phosphorylated nanocellulose papers for copper adsorption from aqueous solutions

Comparison of the effect of two support materials on copper removal from aqueous solution in the activated sludge process

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