Nanofiltration of partial oxidation products and copper from catalyzed wet peroxidation of phenol

Inchaurrondo, Natalia; Haure, Patricia M.; Font, Josep

doi:10.1016/j.desal.2012.12.024

Cited by 5 publications

(5 citation statements)

References 21 publications

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“…Various techniques, such as biological, physical and chemical treatments, have been used to purify the abovementioned industrial organic wastewaters. [3][4][5] However, the conventional biological method is not widely used to treat highly nonbiodegradable wastewater and also requires considerably long residence time for micro-organisms to degrade the pollutants. 6 Physical treatments, for example, adsorptive processes, which are useful in the purication of diluted wastewaters, need a further destructive post-treatment.…”

Section: Introductionmentioning

confidence: 99%

Catalytic wet oxidation of phenol with Fe–ZSM-5 catalysts

2016

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Section: Introductionmentioning

confidence: 99%

Catalytic wet oxidation of phenol with Fe–ZSM-5 catalysts

2016

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“…Less frequent is the use of CS as a post-synthesis protecting agent for colloid stabilization [ 51 ]. Cu-CS composites are widely used in catalysis and biocatalysis [ 59 , 60 , 61 , 62 , 63 ]. CS modified with Cu(II) ions has been used as a convenient substrate for enzyme immobilization [ 60 ], with large thermal and operational stability.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, visible light-activated Cu/Cu 2 O-CS nanocomposites are effective and inexpensive photo-catalysts used in the degradation of organic dyes [ 59 ]. Implemented in filtration systems, these composites are useful tools for the purification of wastewater, based on the massive elimination of alcohols and phenols from effluents [ 61 ]. Cu-CS composites are also able to bind, by electrostatic interaction, DNA chains and to induce DNA catalytic cleavage [ 63 ].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Characterization of Copper-Chitosan Nanoantimicrobials Prepared by Laser Ablation Synthesis in Aqueous Solutions

et al. 2016

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Copper-chitosan (Cu-CS) nanoantimicrobials are a novel class of bioactive agents, providing enhanced and synergistic efficiency in the prevention of biocontamination in several application fields, from food packaging to biomedical. Femtosecond laser pulses were here exploited to disrupt a Cu solid target immersed into aqueous acidic solutions containing different CS concentrations. After preparation, Cu-CS colloids were obtained by tuning both Cu/CS molar ratios and laser operating conditions. As prepared Cu-CS colloids were characterized by Fourier transform infrared spectroscopy (FTIR), to study copper complexation with the biopolymer. X-ray photoelectron spectroscopy (XPS) was used to elucidate the nanomaterials’ surface chemical composition and chemical speciation of the most representative elements. Transmission electron microscopy was used to characterize nanocolloids morphology. For all samples, ξ-potential measurements showed highly positive potentials, which could be correlated with the XPS information. The spectroscopic and morphological characterization herein presented outlines the characteristics of a technologically-relevant nanomaterial and provides evidence about the optimal synthesis parameters to produce almost monodisperse and properly-capped Cu nanophases, which combine in the same core-shell structure two renowned antibacterial agents.

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“…Mössbauer spectra were obtained at room temperature (RT) with a conventional constant acceleration spectrometer in transmission geometry with a 57 Co/Rh source. Measurements were recorded at 10 mm/s and then fitted using the Normos program developed by Brand, 1987.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Metal leaching is hard to avoid during the heterogeneous Fenton oxidation of organic pollutants. In order to remove the metal leached, the heterogeneous Fenton process could be coupled with a precipitation or filtration step [56,57] which would generate a reduced volumen of sludge in comparison with a homogeneous process.…”

Section: Fe-d and H-fe-d Samplesmentioning

confidence: 99%