Preconcentration and separation of trace amount of heavy metal ions on bis(2-hydroxy acetophenone)ethylendiimine loaded on activated carbon

Ghaedi, Mehrorang; Shokrollahi, Ardeshir; Kianfar, A.H.; Pourfarokhi, A.; Khanjari, N.; Mirsadeghi, A.S.; Soylak, Mustafa

doi:10.1016/j.jhazmat.2008.06.057

Cited by 54 publications

(26 citation statements)

References 37 publications

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“…Among these techniques, adsorption was considered superior due to its high efficient removal, easy operation, cost effectiveness and availability of efficient adsorbents [11]. Many adsorbents have been evaluated for cadmium and zinc ions uptake including clay minerals [12], activated carbon [13], zeolites [14], metal oxides [15], composites [16], functionalized polymers [17] and carbon nanotubes [18]. Due to their natural abundance, high sorption capacity and chemical and mechanical stability, clay minerals are considered substantial adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Cd2+ and Zn2+ onto Natural Egyptian Bentonitic Clay

Burham

Sayed

2016

Minerals

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Abstract:In the present work, an Egyptian bentonitic clay sample has been structurally characterized using different techniques such as XRD, IR, SEM, and EDX analyses then evaluated as a sorbent for heavy metal ions removal. The characterization results showed that the clay sample is in the bentonite form with montmorillonite and kaolinite as mixed-clay minerals. The specific surface area (SSA) and cation exchange capacity (CEC) were determined using methylene blue test and they were found to be 367 m 2 /g and of 85 meq/100 g, respectively. The applicability of this clay sample for Cd (II) and Zn (II) removal from aqueous media was tested using batch procedures. Experimental parameters affecting the removal process were analyzed to get optimum conditions for the process. The experimental kinetic data were fitted very well to pseudo-second order with very high correlation coefficients. The Freundlich model appeared to correlate the adsorption data much better than Langmuir model with maximum adsorption capacities of 8.2 and 9.45 mg/g for Cd 2+ and Zn 2+ , respectively. Successful application of the studied adsorbent for the removal of Cd 2+ and Zn 2+ ions from natural water samples greatly supports its potential for practical application.

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Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of Cd2+ and Zn2+ onto Natural Egyptian Bentonitic Clay

Burham

Sayed

2016

Minerals

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“…The adsorption capacity is the maximum metal quantity taken up by 1 g of solid phase and given by mg metal g −1 modified solid phase [46]. The adsorption capacities of modified column were determined by batch and column methods.…”

Section: Adsorption Capacitymentioning

confidence: 99%

Solid phase extraction of trace amounts of palladium ions using multiwalled carbon nanotube modified by N,N’-bis(2-hydroxy-benzylidene)-2,2’(aminophenylthio) ethane prior to determination by flame atomic absorption spectrometry

Shamspur¹

2012

Bull. Chem. Soc. Eth.

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ABSTRACT.Multiwalled carbon nanotubes modified with N,N'-bis(2-hydroxybenzylidene)-2,2'(aminophenylthio) ethane have been developed for the selective separation and/or preconcentration of trace amounts of Pd(II) in aqueous medium. Parameters including pH of aqueous solution, flow rates, the amount of ligand and the type of stripping solvents were optimized. It was found that the sorption is quantitative in the pH range (1.5-4), whereas quantitative desorption occurs instantaneously with 3.0 mL of 0.3 M Na2SO3. Linearity was maintained between 0.01 to 22 µg mL -1 for Pd in the final solution. The breakthrough volume was greater than 1800 mL with an enrichment factor of more than 600 and 6.0 µg L −1 detection limit (3s, n = 10). The effects of various ions interferences on the percent recovery of palladium ion were studied. The method was successfully applied to the determination of palladium ion in environmental samples.

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“…The real samples including water, soil, blood, liver, meat and spinach samples was treated according to previous publication [30][31][32][33]. Then the procedure given in Section 2.5 has been applied.…”

Section: Application Of Real Samplesmentioning

confidence: 99%

Combination of cloud point extraction and flame atomic absorption spectrometry for preconcentration and determination of trace iron in environmental and biological samples

et al. 2008

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Abstract:In the presented work, the conditions for cloud point extraction of iron from aqueous solutions using 7-iodo-8-hydroxyquinolin-5-sulphonic acid (Ferron) was investigated and optimized. The procedure is based on the separation of its ferron complex into the micellar media by adding the surfactant Triton X-114. After phase separation, the surfactant-rich phase was dissolved with 1.0 M HNO 3 in methanol. Iron was determined by flame atomic absorption spectrometry. Optimization of the pH, ligand and surfactant quantities, incubation time, temperature, viscosity, sample volume, and interfering ions were investigated. The effects of the matrix ions were also examined. The detection limits for three times the standard deviations of the blank for iron was 0.4 ng m L -1, enrichment factor of 19.6 and preconcentration factor of 30 could be achieved. The validity of cloud point extraction was checked by employing real samples including soil, blood, spinach, milk, meat, liver and orange juice samples using the standard addition method, which gave satisfactory results. © Versita Warsaw and Springer-Verlag Berlin Heidelberg. Keywords: 7-iodo-8-hydroxyquinolin-5-sulphonic acid (Ferron) • Iron • Cloud point extraction • Triton X-114 •Flame atomic absorption spectrometry Research ArticleAbbreviation TAN and Phen -tannins and other phenolic compound, PMBP -1-phenyl-3-methyl-4-benzoyl-5-pyrazolone, GF-AAS -graphite furnace atomic absorption spectrometry, FAAS -flame atomic absorption spectrometry.

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Preconcentration and separation of trace amount of heavy metal ions on bis(2-hydroxy acetophenone)ethylendiimine loaded on activated carbon

Cited by 54 publications

References 37 publications

Adsorption Behavior of Cd2+ and Zn2+ onto Natural Egyptian Bentonitic Clay

Adsorption Behavior of Cd2+ and Zn2+ onto Natural Egyptian Bentonitic Clay

Solid phase extraction of trace amounts of palladium ions using multiwalled carbon nanotube modified by N,N’-bis(2-hydroxy-benzylidene)-2,2’(aminophenylthio) ethane prior to determination by flame atomic absorption spectrometry

Combination of cloud point extraction and flame atomic absorption spectrometry for preconcentration and determination of trace iron in environmental and biological samples

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