The operational parameters such as initial concentration (100–600 mg/L); contact time (10–120 min) and pH (3–10) influenced the removal efficiency and quantity …
Even at a low concentration of butyl xanthate (0.01 mM), a film began to form on the malachite surface, and the malachite surface morphology continually …
The S atomic concentration on the malachite surface increased from 0.43% to 1.05% in the absence of CH 6 N 2 O 2, as shown in Fig. 7 (c). However, the Cu …
The minimum detected concentration can reach 0.02 mg/mL, and the relative standard deviation is about 10 %. At the same time, the adsorption capacity of attapulgite modified polypropylene adsorbent membrane did not decrease significantly after 50 cycles.
After the ∗CO is formed on malachite surfaces, the reaction energetics on the malachite (010) surface goes entirely downhill, while that on the Cu (100) surface requires an energy cost of 0.56 eV for the CO dimerization step, i.e., ∗2CO → ∗OCCO, suggesting the enhanced C–C coupling when the malachite surface serves as an active site.
Using Zero Nano-Valent Iron/Thin Film Composite (ZNVI/TFC) membrane for brackish water desalination and purification. ... NCs membrane is the outcome of advancing the PA(TF) membrane by combining with different concentration of ZNVI particles into the organic phase 1,3,5-benzenetricarbonyl trichloride (TMC). ZNVI/PA(TF) NCs …
Abstract The undoped and vanadium pentoxide (V2O5) doped NiO thin films were prepared using sol–gel spin coating method. The synthesized thin film's photocatalytic activity was evaluated through the degradation of malachite green using UV light irradiation. The XRD pattern unfold that all the films have cubic structure. Raman …
Download scientific diagram | Adsorption of malachite green on the Florisil film supported on polypropylene. Florisil dosage: 5.00 g L -1 . ( ) The concentration of malachite green; ( ) relative ...
Membranes 2022, 12, 768 19 of 22 5. Conclusions Thin-film composite (M1 membrane) and Thin-film nanocomposite (M2 membrane) membranes come under the category of nanofiltration which is the pressure-driven membrane that does effective separation of dyes and ions by size exclusion and the Donnan ion phenomenon.
The initial malachite green dye concentration is an important factor in the adsorption ... Rahimpour, A. & Omidkhah, M. R. TETA-anchored graphene oxide …
A kind of new malachite green (MG) polypyrrole (PPy) molecularly imprinted (MIP)/gold nanoparticle composite (AuNPs) film–modified glassy carbon electrode (MG-MIPPPy/AuNPs/GCE) was prepared by potentiostatic deposition of gold nanoparticle on glassy carbon electrode at − 0.2 V (vs. SCE) for 100 s, pyrrole (Py) as …
Under the conditions of Na 2 S concentration of 5 × 10-4 mol/L, CuSO 4 concentration of 5 × 10-4 mol/L, and NaIX concentration of 5 × 10 −3 mol/L, when the EDA concentration increased from 4 × 10 −5 mol/L to 8 × 10 −5 mol/L, the flotation recovery rate of the hemimorphite increased from 72.34 % to 86.4 %. However, as the ...
Enhanced adsorption of malachite green (MG) dye using RF glow oxygen plasma-modified coconut carbon shell: A sustainable approach for effluent treatment ... using 0.2 g of adsorbent in 50 mL solutions with initial dye concentrations of 25 mg/L and 100 mg/L, the 10-minute plasma-treated samples achieved adsorption capacities of 6.01 …
Poly(malachite green) film electropolymerized on the glassy carbon electrode was found to be not totally active towards oxidation of ascorbic acid when the concentration of ascorbic acid is too ...
Malachite (2 g) or calcite (2 g) and 50 mL of DI water were added to a beaker. ... Fig. 2 shows the flotation recovery rates of malachite or calcite as a function of the …
The presence of MWCNTs in the composite film (MWCNTs–NF–PMG) enhances surface coverage concentration (Γ) of PMG to ≈396%, and increases the electron transfer rate constant (k s) to ≈305%. Similarly, electrochemical quartz crystal microbalance study reveals the enhancement in the deposition of PMG at MWCNTs-NF …
The removal of malachite green (MG) from aqueous solution using teak leaf litter powder (TLLP) was investigated. The process was influenced by initial concentration, pH and temperature of dye solution …
In order to investigate the adsorption process of malachite green (MG) on gold nanoparticles, a simple gold nanoparticles‐assembled film was prepared as a substrate of surface‐enhanced Raman ...
Known in the new spelling, malachites, at least by 1661. Malachite is a green, very common secondary copper mineral with a widely variable habit. Typically it is found as crystalline aggregates or crusts, often banded in …
Malachite green (Tianjin Chemical Co., Tianjin, China), ascorbic acid (Shanghai Chemical Co., Shanghai, China), and dopamine (Acros Organic Co., USA) were used as received without further purifications.
1.. IntroductionMulti-dimensional films (e.g. conducting polymers films, polyelectrolytes) [1], [2], [3], [4], [5], [6], two-dimensional films (e.g. layer-by-layer ...
This result proves that the deposition of PMG on the MWCNT–NF film is a higher concentration than that on NF modified or bare gold electrodes. ... Poly(malachite green) film: electrosynthesis, characterization, and sensor application. Polymer, 47 (2006), pp. 7684-7692. View PDF View article View in Scopus Google Scholar
Naturally occurring non-toxic vegetable oils have been used as membrane liquids. Polyvinylidene fluoride (PVDF) films have been used as supports for the liquid membrane. Various parameters affecting the dye permeation such as initial dye concentration, pH, stripping acid concentration, oil viscosity and membrane stability …
The standard measurement of dissolved copper is made by filtering the water sample through a membrane with a pore-size of 0.45 μm [29].However, a passivating film of copper carbonate hydroxides, such as malachite, growing over the metallic surface is formed by the aggregation of structures with a size less than 0.2 μm that could be …
As shown in Fig. 6, in the range of NaCl concentration from 20 to 80 mmol/L, the desorption effect of malachite green and dagenan on the surface of polypropylene adsorption membrane modified with ATP gradually deteriorates. This is due to the fact that the high salt concentration of the desorption solution leads to an increase in the volume …
Both the PVA-10% Na-MT particles and the film adsorb nearly all of the free dye for these trials (20 ppm starting MG concentration). Because twice as much film mass is used, the film's q e value ...
The films of pure polyvinylidene fluoride (PVDF) and various concentration of malachite green (MG) doped have been prepared by solution cast method. The absorption spectra recorded by UV-VIS ...
Batch experiments were conducted to study the biosorption of Malachite Green (MG) onto polylactide (PLA)/spent brewery grains (SBGs) films. Films were prepared by solvent-casting method using dichloromethane. Effects of contact time, pH, salt concentration, and optimal experimental condition was evaluated. At pH 6.89 and low …
The films of pure polyvinylidene fluoride (PVDF) and various concentration of malachite green (MG) doped have been prepared by solution cast method. The absorption spectra recorded by UV-VIS ...
The obviously and uniformly luminescence enhancement for Au NRs embedded Eu-PMMA films is realized. • The enhanced luminescence can be used to improve the detection of MG based on the FRET from Eu to MG.. The detected lowest concentration for MG is reduced from 0.01 mg L-1 to 0.001 mg L-1.. The prepared …
We present a new approach combining diffusive equilibrium in thin-film gels and spectrophotometric methods to determine the spatial distribution of arsenite, arsenate, and phosphate at submillimeter resolution. ... Malachite Green Reagent . The concentration of reagents used for arsenic and phosphate determination was adapted …
A wrinkled Ag NPs@PDMS film was fabricated for in situ SERS detection of malachite green residues. High-density and highly available hot spots were present on the PDMS surface. The strong adhesion between Ag NPs and PDMS increased the mechanical stability of the substrate. 1D CNN model was developed for intelligent analysis of …
With NaBX as the collector, malachite floatability was weak without sulfidation prior to flotation, and the flotation recoveries of malachite were 20.42% at 2 × 10 −5 mol/L concentration of ...
Poly(malachite green) films were synthesized electrochemically on the glassy carbon electrode in the potentiodynamic mode. ... The developed methodologies were able not only to accurately detect catecholamines at relevant concentration levels, but to do so in the presence of co-existing interferences in samples detected (ascorbate, …
Even at a low concentration of butyl xanthate (0.01 mM), a film began to form on the malachite surface, and the malachite surface morphology continually evolved upon at higher concentrations. More specifically, at a concentration of 0.03 mM, the surface morphology exhibited numerous "needle-like" protrusions.
