Coupled transport of chromium(III) ions across triethanolamine/cyclohexanone based supported liquid membranes for tannery waste treatment

Chaudry, M. Ashraf; Bukhari, Naheed; Mazhar, Muhammad; Abbasi, W. A.

doi:10.1016/j.seppur.2006.12.008

Cited by 17 publications

(7 citation statements)

References 16 publications

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“…This development should be increased because of the good performance offered by membrane processes and due to the emerging needs of environmental protection (effluent treatment, clean processes…). Meanwhile, these different applications, research increasingly pushed to better understand the functioning of these membrane processes, create more efficient or more specific, and develop new methods to access new applications [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Methyl Cholate and Resorcinarene New Carriers for the Recovery of Cr(III) Ions by Supported Liquid Membranes (SLM)s

Benjjar¹,

Eljaddi²,

Kamal³

et al. 2013

OJPC

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The technique of supported liquid membranes was used to achieve the facilitated transport of Cr(III) ions, using tow amphiphilic carriers, the methyl cholate and resorcinarene. For prepared SLMs, toluene as organic phase and film of polyvinylidene difluoride, as hydrophobic polymer support with 100 μm in thickness and 0.45 μm as the diameter of the pores. The macroscopic parameters (P and J₀) on the transport of these ions were determined for different medium temperatures. For these different environments, the prepared SLMs were highly permeable and a clear evolution of these parameters was observed. The parameter J₀ depended on the temperature according to the Arrhenius equation. The activation parameters, Ea, ΔH^≠ and ΔS^≠, for the transition state on the reaction of complex formation (ST) , were determined. To explain these results for this phenomenon, and achieve a better extraction of the substrate, a model based on the substrate complexation by the carrier and the diffusion of the formed complex (ST) was developed. The experimental results verify this model and determine the microscopic parameters (K_ass and D^*). These studies show that these parameters K_ass and D^* are specific to facilitated transport of Cr(III) ions by each of the carriers and they are changing significantly with temperature.

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Section: Introductionmentioning

confidence: 99%

Methyl Cholate and Resorcinarene New Carriers for the Recovery of Cr(III) Ions by Supported Liquid Membranes (SLM)s

Benjjar¹,

Eljaddi²,

Kamal³

et al. 2013

OJPC

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“…It can be also noticed that an HCl solution of pH 1 ensures an approximately total release of Cr(III) complexed at the interface feed solution-membrane. In the same way, Chaudry et al [28] revealed that the initial Cr(III) flux across a triethanolamine-cyclohexanone based SLM is enhanced when the metal concentration in the source phase increases from 10.22×10 -4 to 30.72×10 -4 M. This study was carried out using organic solutions of 50% (v/v) D2EHPA in 2-octanol and receiving solutions of 0.1 M HCl.…”

Section: Effect Of the Feed Phmentioning

confidence: 79%

Studies on the transport of chromium(III) through a supported liquid membrane containing D2EHPA as carrier

Zaghbani¹,

Tayeb²,

Dhahbi³

2009

Desalination and Water Treatment

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ab s t r ac tThe facilitated transport of chromium(III) through a flat-sheet supported liquid membrane (FSSLM) containing di(2-ethylhexyl) phosphoric acid (D2EHPA) as ionophore is studied. A buffered Cr(III) solution was used as a source phase, whereas HCl solution was used as a receiving phase. The incidence of several parameters such as feed phase pH, carrier concentration, polymeric support nature and diluent chemical nature on the transport efficiency has been investigated. Overall experiments, a feed pH decrease has been observed due probably to proton permeation. Therefore, pH was manually maintained during the run at the initial value by adding NaOH concentrated solution to the feed phase. After 48 h transport, a trivalent chromium transport efficiency of almost 67% has been obtained through a D2EHPA-2-octanol based SLM when source pH was maintained constant around 4.5. Under the optimum experimental conditions an initial flux value of 4×10 -6 mol.m -2 .s -1 has been estimated. Transport of hexavalent chromium across the D2EHPA based FSSLM was also examined, and a very slight amount not exceeding 5% was transported.

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“…Di‐sodium ethylenediaminetetra acetic acid (a.k.a Na 2 ‐EDTA), used in the previously reported work (Mondal and Saha, 2018), does not have electrolytic property. Hence, four types of strip phase solutions such as H 2 SO 4 (Reddy et al , 2006; Chaudry et al , 2007), NH 4 Cl (Lee et al , 2010; Peng and Tsai, 2014), NaCl (Choi and Moon, 2005; Peng and Tsai 2014) and NaOH (Huang et al , 1998; Venkateswaran and Palanivelu, 2005; Chiha et al , 2006; Goyal et al , 2011; Kumar et al , 2019) have been tried to find the better one suited for our purpose. The concentration of strip solution in each case was maintained at 0.1 M. The reduction of Cr(VI) to Cr(III) and subsequent precipitation as chromium‐iron hydroxide were possible in case of NH4Cl and NaCl with 14.53 and 21.17% efficiency respectively.…”

Section: Resultsmentioning

confidence: 99%

Removal of hexavalent chromium from wastewater using supported liquid membrane: synthesis of chromium‐iron complex through electrochemical reaction

Mondal

Saha

2020

Water & Environment J

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Treatment of wastewater containing hexavalent chromium is the issue in this research. Supported liquid membrane with in situ electrochemical reaction in stripping section helps to reduce hexavalent chromium to trivalent chromium by forming chromium-iron complex. Iron plate acts as anode in stripping section. The chromium-iron complex is an useful value added product that can be used for various purposes such as catalyst in water-gas shift reaction. Aliquat 336 has been used as carrier for transport of hexavalent chromium. Various physicochemical parameters have been optimised to detect the condition of maximum transport and precipitation of chromium-iron complex in stripping phase. The important physico-chemical parameters such as strip phase concentration, strip phase pH and concentration of carrier (% v/v) in Liquid Membrane have been selected through response surface methodology to obtain optimum performance for %precipitation of chromium.

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Coupled transport of chromium(III) ions across triethanolamine/cyclohexanone based supported liquid membranes for tannery waste treatment

Cited by 17 publications

References 16 publications

Methyl Cholate and Resorcinarene New Carriers for the Recovery of Cr(III) Ions by Supported Liquid Membranes (SLM)s

Methyl Cholate and Resorcinarene New Carriers for the Recovery of Cr(III) Ions by Supported Liquid Membranes (SLM)s

Studies on the transport of chromium(III) through a supported liquid membrane containing D2EHPA as carrier

Removal of hexavalent chromium from wastewater using supported liquid membrane: synthesis of chromium‐iron complex through electrochemical reaction

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