Synthesis of poly(styrene-co-methacrylic acid)-coated magnetite nanoparticles as effective adsorbents for the removal of crystal violet and Rhodamine B: a comparative study

Hayasi, Mozhgan; Karimi, Mohammad

doi:10.1007/s00289-016-1816-y

Cited by 16 publications

(6 citation statements)

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“…The use of chemicals to desorb the dye from adsorbent showed that the dye molecules were adsorbed on the surface of adsorbent through chemical bonds. The desorption of CV using a combination of different eluents was also reported by many researchers, such as Hayasi and Karimi, who used a mixture of methanol and acetic acid for desorption of CV from the surface of poly(styrene‐co‐methacrylic acid)‐coated magnetite nanoparticles [24] . Yuan et al., used a mixture of hydrochloric acid and ethanol for desorption of CV from the surface of dendritic post‐cross‐linked resin and obtained good results, although the reusability of the adsorbent was only upto 5 cycles [25] .…”

Section: Resultssupporting

confidence: 56%

“…The desorption of CV using a combination of different eluents was also reported by many researchers, such as Hayasi and Karimi, who used a mixture of methanol and acetic acid for desorption of CV from the surface of poly(styrene-co-methacrylic acid)-coated magnetite nanoparticles. [24] Yuan et al, used a mixture of hydrochloric acid and ethanol for desorption of CV from the surface of dendritic post-cross-linked resin and obtained good results, although the reusability of the adsorbent was only upto 5 cycles. [25] Similarly, Maleki and co-workers, reported the use of acetic acid: acetonitrile in different ratios as the eluent for desorption of CV and the results revealed that > 90 % desorption occurred with ratio of 1 : 4 (v/v).…”

Section: Selection Of Eluentsmentioning

confidence: 99%

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4‐Aminosalicylic Acid Functionalized Multiwalled Carbon Nanotubes for Rapid Removal of Crystal Violet Dye from Wastewater Using Minicolumn

2021

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In this paper, 4-aminosalicylic acid functionalized multiwalled carbon nanotubes (CNT-ASA) filled in a mini-column and attached to a Flow-injection system for the adsorptive removal of Crystal violet (CV) dye was employed. The remaining CV concentration was detected by a UV-Visible Spectrophotometric method, which is proposed in this paper. The factors influencing the adsorption and desorption of CV, such as pH, eluent, sample and eluent flow rates were optimized. The optimum pH was 5.5, the eluent selected for desorption was 1 N acetic acid: ethanol (8 : 2), and the sample and eluent flow rate were both 5 mL min À 1 . Under the optimum conditions, the results obtained showed that CNT-ASA possessed excellent dye removal efficiency of ∼ 99 % and adsorption capacity of 440 mg g À 1 for CV. The advantage of using the flow-injection system is the faster adsorption process (in just 1 minute), less amount and high reuse of the nano-adsorbent, which is better in comparison to the traditional column method. The proposed method was applied on industrial and river water samples and good recovery (99-105 %) was obtained. Hence, it can be concluded that the proposed method is fast, effective, and can be applied on large-scale wastewater treatment.

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Section: Resultssupporting

confidence: 56%

Section: Selection Of Eluentsmentioning

confidence: 99%

4‐Aminosalicylic Acid Functionalized Multiwalled Carbon Nanotubes for Rapid Removal of Crystal Violet Dye from Wastewater Using Minicolumn

2021

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“…The results generally indicate a total mass recovery of CV of about 72% after three cycles of the adsorption-desorption process. The reduced efficiency (28%) could be due to incomplete desorption of CV [42]. The results indicate the reusability of the adsorbent with possible regeneration enhancement; however, it necessitates further optimization of the regeneration conditions including solvents types, concentrations, solution pH, etc.…”

Section: Resultsmentioning

confidence: 99%

Adsorptive Performance of Polypyrrole-Based KOH-Activated Carbon for the Cationic Dye Crystal Violet: Kinetic and Equilibrium Studies

Alghamdi

Al-Odayni

Abduh

et al. 2021

Adsorption Science & Technology

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The aim of this work was to investigate the adsorptive performance of the polypyrrole-based KOH-activated carbon (PACK) in the removal of the basic dye crystal violet (CV) using a batch adsorption system. The equilibrium data, obtained at different initial CV concentrations ( C 0 = 50 – 500 mg / L ) and temperatures (25–45°C), were interpreted using the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherms, with the Langmuir model providing a better fit ( R 2 ≥ 0.9997 ) and a maximum adsorption capacity of 497.51 mg/g at 45°C. Under the examined conditions, the values of the thermodynamic parameters free energy, enthalpy, and entropy indicate a spontaneous, endothermic, and physisorption adsorption process. The kinetic data of the adsorption process were very well described by a pseudo-second-order model ( R 2 ≥ 0.9996 ). However, surface diffusion seems to be the main rate-controlling step. Thus, we concluded that PACK shows commercial potential for the removal of cationic dyes such as CV from industrial effluent.

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“…The chemical formula of crystal violet is C 25 H 30 ClN 3 and that of rhodamine B is C 28 H 31 N 2 O 3 Cl. [90] Waste water discharged from textile and pharmaceutical industries prevents penetration of light that affects biological processes that occur on the surface of water. [91] The dye-containing wastewater must be treated in order to maintain supply of important nutrients to all living beings.…”

Section: Adsorption Of Dyesmentioning

confidence: 99%

Surface Modification of NiO‐Al₂O₃ Nanocomposites using Stearic Acid as a Modifier and their Applications in Self‐cleaning and Removal of Dyes

Narwal,

Jeevanandam

2024

ChemistrySelect

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In the present study, a quick surface modification method has been developed for the modification NiO‐Al2O3 nanocomposites using stearic acid (SA). The surface modification of NiO‐Al2O3 nanocomposites with stearic acid was confirmed by various analytical techniques (FT‐IR spectroscopy, thermal gravimetry (TG), carbon and hydrogen (CH) and XPS). There is no change in XRD patterns, and FE‐SEM and TEM images of NiO‐Al2O3 nanocomposites after modification with SA. FT‐IR analysis of SA modified NiO‐Al2O3 nanocomposites shows characteristic IR bands of carboxylate group. TG and CH analyses also confirm the presence of SA in the NiO‐Al2O3 nanocomposites. XPS analysis of SA modified NiO‐Al2O3 nanocomposites shows the presence of carbon atoms of stearic acid. The SA modified NiO‐Al2O3 nanocomposites show water contact angle greater than 90° which suggests their hydrophobic nature. The SA modified NiO‐Al2O3 nanocomposites were explored for self‐cleaning and also as adsorbent for the removal of crystal violet and rhodamine B dyes from aqueous solutions. The SA modified NiO‐Al2O3 nanocomposites remove the dyes within 30 minutes. The effect of various adsorption parameters (adsorbent dosage, contact time, pH, and temperature) was investigated to understand the optimum adsorption conditions. The SA modified NiO‐Al2O3 nanocomposites show better self‐cleaning property as compared to unmodified NiO‐Al2O3 nanocomposites.

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Synthesis of poly(styrene-co-methacrylic acid)-coated magnetite nanoparticles as effective adsorbents for the removal of crystal violet and Rhodamine B: a comparative study

Cited by 16 publications

References 50 publications

4‐Aminosalicylic Acid Functionalized Multiwalled Carbon Nanotubes for Rapid Removal of Crystal Violet Dye from Wastewater Using Minicolumn

4‐Aminosalicylic Acid Functionalized Multiwalled Carbon Nanotubes for Rapid Removal of Crystal Violet Dye from Wastewater Using Minicolumn

Adsorptive Performance of Polypyrrole-Based KOH-Activated Carbon for the Cationic Dye Crystal Violet: Kinetic and Equilibrium Studies

Surface Modification of NiO‐Al₂O₃ Nanocomposites using Stearic Acid as a Modifier and their Applications in Self‐cleaning and Removal of Dyes

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Synthesis of poly(styrene-co-methacrylic acid)-coated magnetite nanoparticles as effective adsorbents for the removal of crystal violet and Rhodamine B: a comparative study

Cited by 16 publications

References 50 publications

4‐Aminosalicylic Acid Functionalized Multiwalled Carbon Nanotubes for Rapid Removal of Crystal Violet Dye from Wastewater Using Minicolumn

4‐Aminosalicylic Acid Functionalized Multiwalled Carbon Nanotubes for Rapid Removal of Crystal Violet Dye from Wastewater Using Minicolumn

Adsorptive Performance of Polypyrrole-Based KOH-Activated Carbon for the Cationic Dye Crystal Violet: Kinetic and Equilibrium Studies

Surface Modification of NiO‐Al2O3 Nanocomposites using Stearic Acid as a Modifier and their Applications in Self‐cleaning and Removal of Dyes

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Surface Modification of NiO‐Al₂O₃ Nanocomposites using Stearic Acid as a Modifier and their Applications in Self‐cleaning and Removal of Dyes