Highly efficient and selective recovery of Cu(II) from wastewater via ion flotation with amidoxime functionalized graphene oxide as nano collector

Chang, Luping; Cao, Yijun; Peng, Weijun; Miao, Yiheng; Su, Shi‐Lei; Fan, Guixia; Huang, Yukun; Li, Chao; Song, Xiangyu

doi:10.1016/j.seppur.2021.119674

Cited by 15 publications

(3 citation statements)

References 47 publications

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“…reported chalcone oxime-functionalized graphene oxide, which can inhibit the corrosion of steel in the presence of HCl . In a similar study, amido-oxime functionalized graphene oxide has been reported as a highly efficient nanocollector for Cu 2+ from water . Also, graphene based nanofilter membranes have been developed to remove the heavy metal ions .…”

Section: Introductionmentioning

confidence: 93%

“…31 In a similar study, amido-oxime functionalized graphene oxide has been reported as a highly efficient nanocollector for Cu 2+ from water. 32 Also, graphene based nanofilter membranes have been developed to remove the heavy metal ions. 33 The rGO based nanocomposites can be used to detect and remove heavy metals due to their advantages of high compatibility, improved physicochemical properties, and eco-friendliness.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Adsorption of Toxic Heavy Metal Ions on the Surface Engineered Violuric Acid-Reduced Graphene Oxide Nanomaterial

Kumar

Das

2023

ACS Appl. Eng. Mater.

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Herein, a surface-engineered violuric acid-functionalized reduced graphene oxide (rGO-VA) has been synthesized and characterized using XRD, FESEM, HRTEM-EDX, FTIR, XPS, Raman, and UV−vis spectroscopy. The surface morphology describes highly exfoliated graphene sheets and uniformly distributed VA showing a topography of average size ∼1.663 nm. The Raman and EDX spectra describe greater defects due to the presence of C, N, and O atoms on the surface of the rGO-VA. Hence, O and N-containing functional groups that are present on the surface and edge of rGO-VA facilitate the efficient adsorption of toxic metal ions. The synthesized rGO-VA efficiently removes metal ions up to 99.9% of Hg 2+ , Pb 2+ , and As 3+ , from their aqueous solutions (40 mg/L) within a short retention time (5−10 min). The removal efficiency results are unaffected even at various interferences like pH, temperature, organic pollutants, cations, and anions. The adsorption process is chemisorption, multilayer, spontaneous, endothermic, and random. During the adsorption process, the residual concentrations were initially analyzed using UV−vis spectroscopy, and the results were verified by AAS. Overall, the present surface-engineered rGO-VA may be crucial for developing an efficient adsorbent to remove toxic metal ions from wastewater.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Efficient Adsorption of Toxic Heavy Metal Ions on the Surface Engineered Violuric Acid-Reduced Graphene Oxide Nanomaterial

Kumar

Das

2023

ACS Appl. Eng. Mater.

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“…However, as an important resource, copper is widely used in chemical, alloy, catalysis and energy fields. It is difficult to replace or significantly reduce the use of copper [15,16]. For this reason, it is necessary to prepare a new material or technology that can efficiently extract or fix copper in wastewater to reduce the harm of copper to the ecosystem.…”

Section: Introductionmentioning

confidence: 99%

O-Modified Activated Carbon Fiber Electrode Efficiently Adsorption of Cu (II) in Wastewater

Xiao¹,

Zhao

Gu³

et al. 2023

Sustainability

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At present, wastewater discharged from many industries contains a large amount of Cu (II). In this study, an O-modified activated carbon fiber (O-ACF) with high adsorption activity was prepared by oxidation modification of activated carbon fiber with 20% nitric acid. O-ACF was used to adsorb Cu (II) in water. Electrode adsorption experiments showed that O-ACF had excellent electro-adsorption performance for Cu (II), and the maximum adsorption capacity was 48.60 mg/g, which was 1.63 times that of commercial activated carbon. After optimizing and adjusting the voltage (0.6–1.2 V), pH (2–10) and electrode plate spacing (5–20 mm), it was found that the most favorable working conditions for electro-adsorption of Cu (II) by O-ACF electrode were voltage of 1.0 V, solution pH of about 6, and electrode plate spacing of 10 mm. The kinetic model fitting showed that the adsorption effect of O-ACF on Cu (II) was mainly chemical adsorption. The intraparticle diffusion model further found that the adsorption of Cu (II) by O-ACF was influenced by membrane diffusion and internal diffusion. Adsorption regeneration experiment showed that O-ACF still maintained 95% adsorption performance for Cu (II) after 5 times of adsorption regeneration, which had good practicability. This study provides an excellent material for capacitive deionization system, which is expected to be applied in sewage treatment, seawater desalination and nutrient recovery.

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Structure characteristics and adsorption performance of graphene oxide prepared by spent carbon cathode—an ultra-low temperature graphitized carbon material

Li,

Chen,

Zeng

et al. 2023

Environ Sci Pollut Res

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Highly efficient and selective recovery of Cu(II) from wastewater via ion flotation with amidoxime functionalized graphene oxide as nano collector

Cited by 15 publications

References 47 publications

Efficient Adsorption of Toxic Heavy Metal Ions on the Surface Engineered Violuric Acid-Reduced Graphene Oxide Nanomaterial

Efficient Adsorption of Toxic Heavy Metal Ions on the Surface Engineered Violuric Acid-Reduced Graphene Oxide Nanomaterial

O-Modified Activated Carbon Fiber Electrode Efficiently Adsorption of Cu (II) in Wastewater

Structure characteristics and adsorption performance of graphene oxide prepared by spent carbon cathode—an ultra-low temperature graphitized carbon material

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