Poly(dopamine) grafted bio-silica composite with tetraethylenepentamine ligands for enhanced adsorption of pollutants

Arıca, Tuğçe A.; Kuman, Merve; Gerçel, Özgül; Ayas, Erhan

doi:10.1016/j.cherd.2018.11.003

Cited by 89 publications

(22 citation statements)

References 44 publications

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“…3, when the initial concentration of cadmium ions was increased in the solution, the amount of the metal ions adsorbed onto the adsorbent surface equally increased. This could be as a result of the increase in the number of the molecules of metal ions per unit volume of the medium (Arica et al, 2018).…”

Section: Effect Of Agitation Time and Metal Concentrationsmentioning

confidence: 99%

“…The common patterns of enhanced pollutant adsorption with a raise in sorbent dosage signify the existence of more binding sites which are available for adsorption. Arica et al (2018) observed that an increase in the adsorbent dosage provides increase in the available sites on the adsorbent with for the uptake of the adsorbate, and this lead to an increase in the removal e ciency of adsorbent.…”

Section: Effect Of Dosagementioning

confidence: 99%

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Orange Peel As Low-Cost Adsorbent In The Elimination Of Cd(Ii) Ions: Kinetics, Isotherm, Thermodynamic And Optimization Evaluations

Akinhanmi

Ofudje

Adeogun

et al. 2020

Preprint

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The presence of heavy metals in polluted water is known not only to cause stern harm to marine organisms but also to terrestrial plants and animals including human beings. This research applied low-cost and environmental benign adsorbent primed from waste orange peel (OP) for the removal of Cd(II) ions from aqueous solution via batch adsorption process. The surface properties of the orange peel powder were studied using Scanning Electron Microscopy (SEM), X-ray spectroscopy (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR). Operational conditions like temperature, contact time, sorbent dosage, solution pH and initial adsorbate concentration were investigated. The utmost uptake of Cd(II) ion was obtained at a contact time of 120 mins, initial metal concentration of 240 mg/L, adsorbent dosage of 0.04 g/L, temperature of 45 °C and solution pH of 5.5. Equilibrium results showed that the orange peel adsorbent has an adsorption capacity of 128.23 mg/g as obtained from the Langmuir isotherm. The adsorption kinetics data followed a pseudo-first-order kinetic model with correlation coefficient (R2) >0.9 and low standard % error values. The adsorption process was found to be endothermic in nature with enthalpy of 0.0046 kJ mol−1 and entropy of-636.865 Jmol-1K-1 respectively. Results from the optimization study indicated that higher adsorbent dosage and lower Cd(II) ion concentration increased the percentage of Cd (II) ion removal. Thus, orange peel could be used in the removal of Cd(II) ion from aqueous solutions.

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Section: Effect Of Agitation Time and Metal Concentrationsmentioning

confidence: 99%

Section: Effect Of Dosagementioning

confidence: 99%

Orange Peel As Low-Cost Adsorbent In The Elimination Of Cd(Ii) Ions: Kinetics, Isotherm, Thermodynamic And Optimization Evaluations

Akinhanmi

Ofudje

Adeogun

et al. 2020

Preprint

View full text Add to dashboard Cite

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“…In another reported work, Bayramoglu et al used tris(2‐aminoethyl)amine ligand attached magnetic poly(glycidyl methacrylate‑ethylene glycol dimethacrylate) resin with ferromagnetic behavior for the efficient removal of metal containing dyes, viz ., Reactive Green 5 and Reactive Brown 10 from aqueous solutions. Arica et al also synthesized bio‐silica polydopamine from diatomite fossil particles and polydopamine grafted with tetraethylenepentamine ligand. This was used for isolating a model dye, viz ., Direct Blue 75 from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Studies on the Complexation of 3d Transition Metal Ions with NR/PEO Block Copolymer in Aqueous Medium

Mrudula

Nair

2020

Polymer Engineering & Sci

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Polyethylene oxide (PEO) was chemically linked to natural rubber (NR) segments to form a block copolymer (BC), which proved to be a suitable material for complexing with selected first row transition metal ions in aqueous solution through batch adsorption method under noncompetitive mode. Optimum conditions for sorption were found to be 20 mmol/L initial concentration, pH at 6, ambient temperature, and 24 h. The order of decreasing adsorption capacity obtained is Mn(II) > Co(II) > Zn(II) > Ni(II) > Cu(II) > Fe(III). Freundlich isotherm shows the best fit indicating that the adsorption is of heterogeneous in nature. The complexation follows pseudo second‐order kinetics. Exothermic character of the complexation was confirmed by thermodynamic study. For all metal ions, the standard free energy change values are negative for the different temperatures studied, which confirms the spontaneous character of the process. At ambient temperature, the free energy change lies between −2.35 and − 7.83 kJ/mol for all complexes. Values of activation energy for all the metal ion complexation is within the range 11–25 kJ/mol, which indicates chemical interaction via activated physico–chemical adsorption. Variation in stability constant of the complexes also follows the same order as given above. POLYM. ENG. SCI., 60:661–672, 2020. © 2020 Society of Plastics Engineers

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“…Recent estimates indicate that approximately 12% of synthetic dyes used each year are lost during manufacture and processing operations and that 20-35% of these input dyes enter the environment through effluents from the treatment of residual industrial water. Dyes are easily visible even in extremely diluted forms, posing aesthetic problems, and are toxic to human and aquatic life [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Studies of Textile Dye (Chrysoidine) from Aqueous Solutions Using Activated Sawdust

Ashraf

Abu-Libdeh

Salam

2019

International Journal of Chemical Engineering

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Chrysoidine is a type of industrial azo dye and a well-known toxicant. Due to its good dyeing characteristics, it is widely used for dyeing leather, paper, feather, grass, wood, bamboo, etc. Hence, it is very important to remove or reduce its concentration below the contamination level in the waste line by using low-cost technologies. Sawdust is a plentiful material available very cheaply from sawmills and woodworks. Therefore, the present work was conducted to study sorption ability of both raw sawdust and chemically activated sawdust carbon on the removal of chrysoidine from the aqueous solutions. Adsorption isotherms of the dye on sawdust were determined and correlated with usual isotherm equations like Freundlich and Langmuir. Experimental results have shown that sawdust has a high adsorption efficiency, and the adsorption of chrysoidine followed Freundlich’s isotherm. Although raw sawdust proved to be slightly less efficient in comparison to chemically treated sawdust but in economic terms, raw sawdust is more cost-effective as the difference in the percent dye removal is less than the difference in the manufacturing costs. The influence of several parameters such as effect of temperature, adsorbent dose, adsorption time, etc., on the adsorption process was studied along with thermodynamic parameters such as enthalpy (ΔH°) and entropy (ΔS°).

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Poly(dopamine) grafted bio-silica composite with tetraethylenepentamine ligands for enhanced adsorption of pollutants

Cited by 89 publications

References 44 publications

Orange Peel As Low-Cost Adsorbent In The Elimination Of Cd(Ii) Ions: Kinetics, Isotherm, Thermodynamic And Optimization Evaluations

Orange Peel As Low-Cost Adsorbent In The Elimination Of Cd(Ii) Ions: Kinetics, Isotherm, Thermodynamic And Optimization Evaluations

Studies on the Complexation of 3d Transition Metal Ions with NR/PEO Block Copolymer in Aqueous Medium

Adsorption Studies of Textile Dye (Chrysoidine) from Aqueous Solutions Using Activated Sawdust

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