We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Functional Ag-EDTA-modified MnO2 nanocoral reef for rapid removal of hazardous copper from wastewater
Summary
This paper is not about microplastics; it describes the synthesis of a MnO2-EDTA-silver nanoparticle composite for adsorbing copper ions from wastewater, achieving near-complete removal under optimized conditions.
A novel MnO2@EDTA-Ag nanocoral reef was constructed via a simplified redox reaction followed by EDTA and Ag nanoparticles impregnation to capture hazardous copper (II) from wastewater. A comprehensive characterization of the synthesized materials was conducted. The morphology of MnO2@EDTA-Ag in the form of a nanocoral reef was constructed of two-dimensional nanoplatelets and nanorod-like nanostructures. The optimal adsorption conditions proposed by the Plackett-Burman design (PBD) that would provide a removal % of 99.95 were pH 5.5, a contact time of 32.0 min, a Cu(II) concentration of 11.2 mg L-1, an adsorbent dose of 0.05 g, and a temperature of 40.3 °C. The loading of Ag nanoparticles onto MnO2@EDTA improved the adsorption capability of MnO2@EDTA-Ag. Additionally, the recyclability of MnO2@EDTA-Ag nanocoral reef was maintained at 80% after three adsorption-desorption cycles, and there was no significant change in the XRD analysis before and after the recycling process, implying its stability. It was found that nanocoral reef-assisted EDTA formed a chelation/complexation reaction between COO- groups and C-N bonds of EDTA with Cu(II) ions. In addition, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) analysis proved the synergistic effect of the electrostatic interaction and chelation/complexation was responsible for the removal mechanism of Cu(II). Also, the results demonstrated no significant variation in MnO2@EDTA-Ag removal efficiency for all the tested real water samples, revealing its efficacy in wastewater treatment. Therefore, the current study suggests that MnO2@EDTA-Ag has substantial potential to be used as a feasible adsorbent for probable hazardous metals remediation.
Sign in to start a discussion.
More Papers Like This
Facile synthesis and characterization of Fe3O4/analcime nanocomposite for the efficient removal of Cu(II) and Cd(II) ions from aqueous media
This paper is not relevant to microplastics research — it synthesises a magnetic Fe3O4/analcime nanocomposite for removing copper and cadmium ions from water, focused on heavy metal remediation.
Preparation of a Series of Highly Efficient Porous Adsorbent PGMA-N Molecules and Its Application in the Co-Removal of Cu(II) and Sulfamethoxazole from Water
This paper is not about microplastics; it describes a porous polymer adsorbent material (PGMA-N) designed to simultaneously remove copper ions and the antibiotic sulfamethoxazole from water.
Copper Adsorption to Microplastics and Natural Particles in Seawater: A Comparison of Kinetics, Isotherms, and Bioavailability
Researchers compared copper adsorption onto pristine and aged microplastics versus natural particles like algae and sediments in seawater, finding that natural particles generally had higher metal-sequestering capacity, challenging the emphasis on microplastics as dominant metal-transport vectors.
Adsorption and Desorption Behavior of Microplastics on Copper Ions in Aqueous Solution
This study investigated how microplastics of different types and surface chemistry adsorb and release copper ions in water. The findings show that microplastics can pick up and later release heavy metals depending on environmental conditions, acting as vectors that transport toxic metals through aquatic ecosystems.
Synthesis and Adsorption Characteristic Evaluation of Copper Hexacyanoferrate for Nanoplastic Adsorption Removal
Researchers synthesized copper hexacyanoferrate nanoparticles and evaluated their ability to adsorb microplastics from water, finding the material effective at capturing plastic particles through electrostatic interactions and identifying it as a candidate for water treatment applications.