Sorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV–visible spectrophotometer

Pehlivan, Erol; Cetin, S.

doi:10.1016/j.jhazmat.2008.06.115

Cited by 193 publications

(90 citation statements)

References 35 publications

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“…The permissible limit for chromium given by WHO is 0.05 mg L -1 . 3 Several spectro-analytical methods, such as graphite furnace atomic absorption spectrometry (GFAAS), 4 flame atomic absorption spectrometry (FAAS), 5 UV-visible (UV-Vis) spectrophotometry, 6 inductively coupled plasma optical emission spectrometry (ICP-OES), 7 inductively coupled plasma mass spectrometry (ICP-MS) 8 , have been used to determine chromium species in different samples. FAAS has become one of the popular techniques because of its low cost and easy operation.…”

Section: Introductionmentioning

confidence: 99%

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

2016

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An online preconcentration system based on solid-phase extraction was developed for speciation and determinations of Cr in industrial water samples using flame atomic absorption spectrometry. A minicolumn packed with Amberlite XAD-16 loaded with salicylic acid was used to preconcentrate chromium species. All flow and chemical parameters that influence sorption were studied. The preconcentration factor and detection limit for the preconcentration time of 120 s were 79 and 0.10 μg L -1 , respectively. The concentration of Cr(VI) species was calculated by the difference of the total Cr and Cr(III). The relative standard deviation (RSD) (five replicate of measurements) for 50 and 100 μg L -1 Cr(III) solution was 1.2 and 1.0% respectively. The accuracy of the method was verified by analyzing a standard reference material (NIST SRM 1640a, trace elements in natural water). The proposed preconcentration method was successfully applied to the determination of Cr species in industrial water samples with satisfactory results.

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Section: Introductionmentioning

confidence: 99%

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

2016

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“…Adsorption is one of the effective techniques for HMs removal from wastewaters. Application of different adsorbents such as zeolite, peat, activated carbon, anionic resin and cationic resin to remove HMs from the aqueous phase has been widely studied (Wu et al, 2008;Zeng et al, 2010;Ulmanu and Anger, 2008;Choi et al, 2009 Pehlivan andCetin, 2009;Alguacil et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Potential of single and double-combined adsorbents in removing chromium from an industrial wastewater

Mousavi

Aghakhani

2013

E3S Web of Conferences

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Abstract. Nowadays, there is much attention in using low-cost methods for removing heavy metals' pollution from wastewaters. In this research, the ability of different adsorbents including zeolite, peat, activated carbon, cationic resin and anionic resin (in single and double-combined forms) in decreasing Cr(III) and Cr(VI) concentration to below the legal limits from an industrial wastewater was investigated. The results showed that for single-adsorbent treatments, all adsorbents were more effective in reducing Cr(VI) concentration than Cr(III). The highest removal efficiency (Er=100%) was obtained by anionic resin. Presence of anionic resin in each double-adsorbent caused an improvement of chromium removal. Among the double-adsorbents treatments, combination of peat and activated carbon was the most proper treatment in removing chromium.

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“…In this study, the sorption reached equilibrium in 120 min and the maximum sorption capacity obtained was in the order of 0.28 mmol g -1 . In another work (Pehlivan and Cetin 2009), Cr(VI) was removed using two anion exchange resins, i.e. Lewatit MP 64 and Lewatit MP 500.…”

Section: Introductionmentioning

confidence: 99%

Removal of hazardous hexavalent chromium from aqueous solution using divinylbenzene copolymer resin

Bajpai

Dey

Jha

et al. 2012

Int. J. Environ. Sci. Technol.

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This paper presents the removal of hazardous hexavalent chromium from liquid waste streams using divinylbenzene copolymer resin Amberlite IRA 96. Important sorption parameters such as contact time, pH, resin dosage and initial metal concentration were studied at 30°C. The kinetic study was conducted using pseudo-first and pseudo-second-order kinetics at 30°C. The sorption process was found to be pH dependent. Maximum removal was obtained at pH 2 under optimized conditions. The sorption process was rapid and 99 % of the removal was achieved in first 30 min. The equilibrium data were fitted to both Langmuir and Freundlich models. The better regression coefficient (R 2 ) in Freundlich model suggests the multilayer sorption process. The value of Gibbs free energy for sorption process was found to be -12.394 kJmol -1 . The negative value indicated the spontaneity of the sorption process. Scanning electron microscope and energy dispersive X-ray spectroscopy studies were conducted to find the role of surface morphology during sorption process. The Fourier transform infrared study was conducted to identify the functional groups responsible for interaction between the resin and chromium. Desorption and regeneration studies were also carried out.

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Sorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV–visible spectrophotometer

Cited by 193 publications

References 35 publications

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

Potential of single and double-combined adsorbents in removing chromium from an industrial wastewater

Removal of hazardous hexavalent chromium from aqueous solution using divinylbenzene copolymer resin

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