Batch and fixed bed column studies on nickel (II) adsorption from aqueous solution by treated polyurethane foam

Mangaleshwaran, L.; Thirulogachandar, A.; Rajasekar, Vyasa Williams; Muthukumaran, C.; Rasappan, K.

doi:10.1016/j.jtice.2015.03.034

Cited by 48 publications

(13 citation statements)

References 41 publications

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“…Commercial PUFs also exhibit poor hydrophobicity to some extent, as required for their practical use for cleanup and recovery of organic (e.g. oil spell) and inorganic species [33][34][35][36][37][38][39]. Hence, surface modification of PUFs is desired to enhance the wettability and hydrophobicity to make it a super hydrophobic and oleophilic absorbent [25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

“…Hence, surface modification of PUFs is desired to enhance the wettability and hydrophobicity to make it a super hydrophobic and oleophilic absorbent [25][26][27][28][29][30][31][32][33][34]. Furthermore, the emergence of nanomaterials with excellent properties (particle size and surface area) also makes them ideal for being coupled with PUFs as a model platform towards a target species [37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

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Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Al-Bagawi¹,

Ahmad²,

Alwael³

et al. 2019

Chemometrics and Data Analysis in Chromatography

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A simple method has been developed for quantitative retention of traces of mercury(II) ions from aqueous media using polyurethane foams (PUFs) loaded with 4-(2-thiazolylazo) resorcinol (TAR). The kinetics and thermodynamics of the sorption of mercury(II) ions onto PUFs were studied. The sorption of mercury(II) ions onto PUF follows a first-order rate equation with k = 0.176 ± 0.010 min −1. The negative values of ΔH and ΔS may be interpreted as the exothermic chemisorption process and indicative of a faster chemisorption onto the active sites of the sorbent. The sorption data followed Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherm models. The D-R parameters β, K DR and E were 0.329 mol 2 kJ −2 , 0.001 μmol g −1 and 1.23 ± 0.07 kJ/mol for the TAR-loaded PUFs, respectively. An acceptable retention and recovery (99.6 ± 1.1%) of mercury(II) ions in water at ≤10 ppb by the TAR-treated PUFs packed columns were achieved. A retention mechanism, involving absorption related to "solvent extraction" and an "added component" for surface adsorption, was suggested for the retention of mercury(II) ions by the used solid phase extractor. The performance of TAR-immobilized PUFs packed column in terms of the number (N), the height equivalent to a theoretical plate (HETP), the breakthrough and critical capacities of mercury(II) ion uptake by the sorbent packed column were found to be 50.0 ± 1.0, 1.01 ± 0.02 mm, 8.75 and 13.75 mg/g, respectively, at 5 mL/min flow rate.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Al-Bagawi¹,

Ahmad²,

Alwael³

et al. 2019

Chemometrics and Data Analysis in Chromatography

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“…It can also be observed that the breakthrough curves were steeper at the lower flow rate, indicating a closer approach to the ideal curve than at a higher flow rate. In the nickel(II) adsorption from aqueous solution by a treated polyurethane foam, breakthrough curves plotted as a function of time were reported to be steeper when the flow rate was increased; however, it resulted in lower efficiency [ 50 ]. In the columns packed with Alg-ChS, the breakthrough and saturation curves appeared at a lower NIVB than those obtained with the columns containing Alg-Ch because they had less adsorption capacity.…”

Section: Resultsmentioning

confidence: 99%

Removal of Cu(II) by Fixed-Bed Columns Using Alg-Ch and Alg-ChS Hydrogel Beads: Effect of Operating Conditions on the Mass Transfer Zone

et al. 2020

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The removal of Cu(II) ions from aqueous solutions at a pH of 5.0 was carried out using fixed-bed columns packed with alginate-chitosan (Alg-Ch) or alginate-chitosan sulfate (Alg-ChS) hydrogel beads. The effect of the initial Cu(II) concentration, flow rate, pH, and height of the column on the amount of Cu removed by the column at the breakpoint and at the exhaustion point is reported. The pH of the solution at the column’s exit was initially higher than that at the entrance, and then decreased slowly. This pH increase was attributed to proton transfer from the aqueous solution to the amino and COO− groups of the hydrogel. The effect of operating conditions on the mass transfer zone (MTZ) and the length of the unused bed (HLUB) is reported. At the lower flow rate and lower Cu(II) concentration used, the MTZ was completely developed and the column operated efficiently; by increasing column height, the MTZ has a better opportunity to develop fully. Experimental data were fitted to the fixed-bed Thomas model using a non-linear regression analysis and a good correspondence between experimental and Thomas model curves was observed.

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“…Nickel may be helpful at non‐dangerous levels; it acts as an enzyme activator and is involved in many significant metabolic processes. However, nickel ingestion on the far side of permissible levels can cause oxidative enzyme inhibition, severe kidney problems (renal edema), pulmonary diseases (lung cancer), gastrointestinal distress (vomiting, diarrhea), shortness of breath, skin dermatitis (or nickel‐itch) etc . These highly hazardous health effects led to the development and use of several chemical and physical technologies for the removal of nickel(II) ions from water and wastewater …”

Section: Introductionmentioning

confidence: 99%

Novel porous organic triazine‐based polyimide with high nitrogen levels for highly efficient removal of Ni(II) from aqueous solution

Mokhtari

Dinari

Rahmanian

2019

Polymer International

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In this study, a porous organic triazine-based polyimide (PPI network) was prepared from 2,4,6-tris(hydrazino)-s-triazine and 3,4,9,10-perylenetetracarboxylic dianhydride. TGA, Fourier transform infrared spectroscopy, field emission SEM, XRD and a nitrogen sorption study confirmed the PPI network structure. Then, the synthesized PPI network was used to evaluate Ni 2+ ion removal from aqueous solution and the effective parameters on adsorption functions of Ni 2+ ions such as initial concentration, contact time and pH of the solution in batch adsorption experiments was studied. The results showed that the maximum adsorption capacity (q m ) of Ni 2+ ions was 36.1 mg g −1 in only 30 min with a pH of 7. The kinetics and adsorption isotherm were identified to be better fitted by the pseudo-second-order model and the Langmuir model, respectively. Based on the results, the proposed adsorbent has good potential for removing Ni 2+ ions from aqueous solutions.

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Batch and fixed bed column studies on nickel (II) adsorption from aqueous solution by treated polyurethane foam

Cited by 48 publications

References 41 publications

Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Chromatographic Separation, Total Determination and Chemical Speciation of Mercury in Environmental Water Samples Using 4-(2-Thiazolylazo) Resorcinol-Based Polyurethane Foam Sorbent-Packed Column

Removal of Cu(II) by Fixed-Bed Columns Using Alg-Ch and Alg-ChS Hydrogel Beads: Effect of Operating Conditions on the Mass Transfer Zone

Novel porous organic triazine‐based polyimide with high nitrogen levels for highly efficient removal of Ni(II) from aqueous solution

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