Sorption of Cr(VI) from aqueous solution by Amberlite XAD-7 resin impregnated with Aliquat 336

Saha, Basudeb; Gill, Ros; Bailey, David G.; Kabay, Nalan; Arda, Müşerref

doi:10.1016/j.reactfunctpolym.2004.03.003

Cited by 127 publications

(77 citation statements)

References 22 publications

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“…However, correlation coefficients for Freundlich isotherm model were higher than those for UO. Freundlich models have been used in modelling metal ions isotherms by several researchers (13,(22)(23)(24)(25). capacities for UO, respectively.…”

Section: Sorption Isotherm Modelsmentioning

confidence: 99%

Electrochemically Modified Viscose-Rayon-Based Activated Carbon Cloth for Competitive and Noncompetitive Sorption of Trace Cobalt and Lead Ions from Aqueous Solution

Saha

Harry

Siddiqui

2009

Separation Science and Technology

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Section: Sorption Isotherm Modelsmentioning

confidence: 99%

Electrochemically Modified Viscose-Rayon-Based Activated Carbon Cloth for Competitive and Noncompetitive Sorption of Trace Cobalt and Lead Ions from Aqueous Solution

Saha

Harry

Siddiqui

2009

Separation Science and Technology

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“…From the variety of the adsorbents studied by workers, the use of macro porous organic polymer supports, with a high surface area and good mechanical stability, is found more suitable for the removal of toxic elements from dilute solution, due to their faster kinetics, ease of regeneration and high adsorption capacity [1][2][3][4][5][6][7][8][9][10]. In this study the Amberlite XAD8 resin was impregnated, through the most widely used method (dry method), with di(2-ethylhexyl) phosphoric acid (DEHPA) [11][12][13][14]. Because the iron compounds in general were found to be very efficient adsorbents for arsenic removal from water due to the high affinity of arsenic towards iron, the XAD8-DEHPA was loaded with Fe(III) ions [2, 3, 6-10, 13, 14].…”

Section: Introductionmentioning

confidence: 99%

The design of the experiments of arsenic removal from aqueous solutions onto Fe-XAD8-DEHPA

Negrea¹,

Negrea²,

Ciopec³

et al. 2012

Water Pollution XI

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One of the main aims for a process is to find the optimum values of the parameters which assure the desired values of the process responses. This activity must be made in the minimum of the time and with the minimum use of consumable resources. The design of the experiments (DoE) assisted by the computer assures that this happens. In this paper, DoE was used to study the adsorption performance of Fe-XAD8-DEHPA in the removal process of As(V) ions from aqueous solutions. It was observed that the Adsorption Capacity and the Efficiency in the removal process of As(V) from the aqueous solution was significantly influenced by concentration and pH. The mathematical model of the process is very good. It includes the experimental data of over 99% in the case of adsorption capacity and over 97% in the case of efficiency. From the contour plots of adsorption capacity and efficiency can be seen that the chemical process is nonlinear. The DOE helped us to find the optimum values of the control factors (pH, contact time and arsenic initial concentrations from solutions) in order to obtain maximum values of Adsorption Capacity and Efficiency.

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“…Aliquat 336 is a well known agent used for impregnation of polymeric sorbents for sorption of chromium(VI) ions [1,2]. Literature describes only a liquid phase during sorption of chromium(VI) ions, without investigation of solid phase and effects inside it.…”

Section: Introductionmentioning

confidence: 99%

Investigations of Chromium(III) and (VI) Ions Sorption οn SIR by using Photoacoustic and DRS Methods

2009

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Chromium is a major pollutant for the environment, usually as a result of some industrial pollution. Chromium is used in various industries such as metallurgical (steel, ferrous and nonferrous alloys), refractories (chrome and chrome-magnesite), and chemical (pigments, electroplating, tanning). For this reason, significant amounts of chromium pass into the environment and cause adverse ecological effects. In the present paper the investigations of solvent impregnated resin preparation was conducted. Photoacoustic and diffuse reflectance spectra were recorded for the prepared solvent impregnated resin. Photoacoustic spectra in the infrared area allow distinguishing the differences between the sorbent applied before and after the impregnation process. Impregnation of resin is a result of physical sorption of Aliquat 336 on macroporous Amberlite XAD 16.

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Sorption of Cr(VI) from aqueous solution by Amberlite XAD-7 resin impregnated with Aliquat 336

Cited by 127 publications

References 22 publications

Electrochemically Modified Viscose-Rayon-Based Activated Carbon Cloth for Competitive and Noncompetitive Sorption of Trace Cobalt and Lead Ions from Aqueous Solution

Electrochemically Modified Viscose-Rayon-Based Activated Carbon Cloth for Competitive and Noncompetitive Sorption of Trace Cobalt and Lead Ions from Aqueous Solution

The design of the experiments of arsenic removal from aqueous solutions onto Fe-XAD8-DEHPA

Investigations of Chromium(III) and (VI) Ions Sorption οn SIR by using Photoacoustic and DRS Methods

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