An excellent arsenic(V) sorption behavior of p-tert-butylcalix[8]areneoctamide impregnated resin

Qureshi, Imdadullah; Memon, Shahabuddin

doi:10.1016/j.crci.2010.02.007

Cited by 22 publications

(11 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It signifies that the best interaction between functionality onto the surface resin 4 and oxoanions occurs at acidic pH range. These interactions include electrostatic interaction and hydrogen bonding between protonable amine functional group onto the surface of resin 4 and the oxygen atoms of these oxoanions (29).…”

Section: Effect Of Phmentioning

confidence: 99%

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Memon

Bhatti

2014

Polycyclic Aromatic Compounds

Self Cite

View full text Add to dashboard Cite

This article highlights a newly synthesized 5,11,17,23-tetra-tert.butyl-25,26,27,28-tetrakis(hydrazidecarbonylmethoxy)-calix[4]arene (3) impregnated resin 4 and it's sorption ability for the removal of selected oxoanions, i.e., (arsenate and dichromate) from aqueous environment. Resin 4 was characterized by using FT-IR spectroscopy, scanning electron microscope (SEM), elemental, and thermogravimetic (TGA) analyses techniques. Sorption study was carried out through static and dynamic methods with continuous flow operation to evaluate the potency of resin 4 under various conditions. Several parameters, such as effect of sorbent dosage, contact time, pH, and initial concentration were optimized through batch experiments. Results justify that % sorption of these oxoanions is highly dependent on pH of the solution. Equilibrium was achieved in 45 min, while sorption efficiency of resin 4 can be better explained by Langmuir and Temkin isotherm models. Furthermore, kinetically both oxoanions follow pseudo second order model. Additionally, sorption of arsenate more appropriately could be explained by Moris-Weber diffusion kinetic model. For the dynamic method, Thomas model was used to calculate the kinetic coefficient (k TH ) and maximum sorption capacity (q o ) of resin 4 which are 3.84 and 5.94 ml mg −1 min −1 and 0.185, 0.160 mg g −1 for As (V) and Cr (VI) respectively. Furthermore, resin 4 has been found as potential sorbent for removal of these oxoanions from contaminated surface water samples.

show abstract

Section: Effect Of Phmentioning

confidence: 99%

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Memon

Bhatti

2014

Polycyclic Aromatic Compounds

Self Cite

View full text Add to dashboard Cite

show abstract

“…D2EHPA-impregnated resins were also commonly used for their recovery [82,83]. Moreover, Qureshi et al [84] compared the As(V) extraction behavior by p-tert-butylcalix [8]areneoctamide derivative (PTBAD) and by PTBADimpregnated resins. The solid-liquid extraction, where As(V) extraction efficiency is slightly higher (5-7 %) than in liquidliquid extraction, is highly effective for the removal of As(V) in a wide range of pH and the recovery can reach about 99 % at pH 4.…”

Section: Common Nonferrous and Ferrous Metalsmentioning

confidence: 99%

“…Occasionally, Temkin [146,147] and Flory-Huggins models [84] were also studied for metal adsorption by SIRs. The Temkin isotherm equation is defined as:…”

Section: Equilibrium and Thermodynamics Of Metal Sorption On Sirsmentioning

confidence: 99%

See 1 more Smart Citation

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

et al. 2016

View full text Add to dashboard Cite

The recovery and separation of metals from aqueous solutions is one of the research hotspots in hydrometallurgy, environment protection, analytical chemistry, etc. Much attention has been paid to solvent-impregnated resins (SIRs) since these were firstly proposed for the extraction of metals. SIRs are characterized by high efficiency and selectivity, convenient preparation, and easy operation because they combine the unique advantages of solvent extraction and ion exchange. The preparation and features of SIRs are summarized and their applications in the extraction of various metals from solutions are reviewed. In addition, the equilibrium, thermodynamics, and sorption kinetics of the metals onto SIRs are elucidated in detail.

show abstract

“…Its upper and lower rim can be functionally modified to form various derivatives to function as guests for various toxic metals or neutral molecules [20] such as Pb(II), chromium(VI), arsenic(V), carcinogenic aromatic amines, amino acid derivatives and azodyes from aqueous systems [21][22][23]. The immobilization of calixarene moiety onto the polymeric support enhances the sorption capacity of the resin [24][25][26]. Present work deals with the investigation of sorption efficiency of synthesized calix[4]arene based silica resin through batch and column sorption methods to remove endosulfan from aqueous system.…”

Section: Introductionmentioning

confidence: 99%

An excellent arsenic(V) sorption behavior of p-tert-butylcalix[8]areneoctamide impregnated resin

Cited by 22 publications

References 33 publications

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Arsenate and Dichromate Removal Efficiency of a New Calix[4]arene Impregnated Resin

Recovery and Separation of Metal Ions from Aqueous Solutions by Solvent‐Impregnated Resins

An efficient calix[4]arene based silica sorbent for the removal of endosulfan from water

Contact Info

Product

Resources

About