Zn(II) ions removal from aqueous solution by Karachi beach sand, a mixed crystal systems

Taqvi, S.I.H.; Hasany, S. M.; Bhanger, Muhammad Iqbal

doi:10.1016/j.seppur.2007.09.020

Cited by 8 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optimum initial pH values for Zn(II) and Cu(II) removal were 4.0-7.0. It indicated that ACB can remove Zn(II) and Cu(II) more effectively over a wider range of pH when compared to other adsorbents [7][8]. Fig.…”

Section: B Effect Of Phmentioning

confidence: 82%

Notice of Retraction: Adsorption Characteristics of Zn(II) and Cu(II) on Alkaline Ca-Bentonite

Zhang

Tong

Wei

et al. 2011

2011 5th International Conference on Bioinformatics and Biomedical Engineering

View full text Add to dashboard Cite

Adsorption of Zn(II) and Cu(II) from aqueous solution on alkaline Ca-bentonite (ACB) has been studied using batch technique. Experiments were carried out as a function of solution pH, dosage of ACB and contact time in single system. Langmuir isotherm model was selected to analyze the equilibrium data for Zn(II) and Cu(II) adsorption on ACB in single and binary systems. The results indicated that ACB had about 99% Zn(II) and Cu(II) adsorption over a wide pH range 4.0-7.0. Zn(II) and Cu(II) adsorption on ACB was quick and the adsorption efficiency reached nearly 70% within 5 min for both metals. Langmuir isotherm fit the data well in single system and the Langmuir monolayer adsorption capacities of Zn(II) and Cu(II) were 208 mg/g and 192 mg/g, respectively. In the binary system, the effect of mixture on ACB was found to be synergistic for Cu(II) but antagonistic for Zn(II). In conclusion, ACB is an effective adsorbent for Zn(II) and Cu(II) removal from aqueous solution.

show abstract

Section: B Effect Of Phmentioning

confidence: 82%

Notice of Retraction: Adsorption Characteristics of Zn(II) and Cu(II) on Alkaline Ca-Bentonite

Zhang

Tong

Wei

et al. 2011

2011 5th International Conference on Bioinformatics and Biomedical Engineering

View full text Add to dashboard Cite

show abstract

“…The overall kinetics was however shown to be pseudo first order. Taqvi et al [138] similarly reported existence of intra-particle diffusion at least up to first 25 min within the first order kinetics for adsorption of Zn(II) on beach sand. The intra-particle diffusion rate coefficient had a very small value of (4.52 ± 0.38) × 10 − 7 mol g − 1 min − 0.5 .…”

Section: Intra-particle Diffusionmentioning

confidence: 93%

“…The first order rate coefficient in this case has a value of 0.038 min − 1 (experimental conditions: adsorbent 2.0 g L − 1 , Zn (II) 100 mg L − 1 , pH 7.0, stirring speed 650 rpm, and temperature 298 K). For adsorption of Zn(II) on beach sand, the first order rate coefficient is much larger (0.11 ± 0.01 min − 1 ; r~0.98) (experimental conditions: adsorbent 26.67 g L − 1 , Zn(II) 9.17×10 − 5 M, particle size 300 μm, stirring speed 150 rpm, and temperature 303 ± 2 K) [138].…”

Section: Zincmentioning

confidence: 99%

Kinetics of adsorption of metal ions on inorganic materials: A review

Gupta¹,

Bhattacharyya

2011

Advances in Colloid and Interface Science

730

248

View full text Add to dashboard Cite

“…4-(5-Nonylpyridine) in benzene was used for solvent extraction of 99 Mo, 99m Tc and 131 I from nitric acid [157]. Amberlite XAD-16 resin functionalized with nitrosonaphthol was [183] used for the adsorption of Ni(II) and Cu(II) [158] and amberlite XAD-4 resin impregnated with dibenzoylmethane (DBM) was employed in flow injection for the determination of U(VI) from aqueous solution of pH 5.5 [159], the same impregnated with N-benzoylphenylhydroxylamine was utilised in flow injection for the determination of Th(IV) from aqueous solution of pH 4.5 [160]. di-n-butyl sulfoxide (DBSO) was used for the separation of Hf(IV) [161] and Th(IV) [162] by solvent extraction.…”

Section: Separation Studiesmentioning

confidence: 99%

“…Some common and cost effective materials were studied for the separation of various ions by adsorption. These include coconut husk for the separation of Hg(II) [181], lead dioxide for Mn [182], beach sand for Zn(II) [183] and for Cd(II) [184], styrofoam for Cd(II) [185], polyurethane (PUR) foam for Se(IV) [186] and sunflower stem for Hg(II) [187].…”

Section: Separation Studiesmentioning

confidence: 99%

Development of radiochemistry in Pakistan – 1960 to 2010

et al. 2012

View full text Add to dashboard Cite

Development of radiochemistry / Uranium and thorium chemistry / Nuclear reaction cross section / Radioisotope and radiopharmaceutical production / Neutron activation analysis / Separation studies / PINSTECHSummary. With the inception of Pakistan Atomic Energy Commission (PAEC) in 1956, peaceful uses of atomic energy commenced for the benefit of scientific community as well as masses of Pakistan. Radiochemistry played a vital role right from the beginning. The research and development in this field accelerated soon after the criticality of the first research reactor named as Pakistan Research Reactor (PARR-1) at the Pakistan Institute of Nuclear Science and Technology (PINSTECH), Islamabad. The first radioisotope produced at PARR-1 for application in nuclear medicine was 131 I. Later on, many other radioisotopes were prepared and radiopharmaceuticals were synthesised for their use in industry and hospitals. Besides providing pure radioactive tracers for nuclear medicine, radiochemistry also enhanced the detection limit of impurities at all stages of nuclear fuel cycle for power generation. In 1983, research in the field of nuclear data measurement began. The main aim was to identify suitable conditions for the production of radionuclides for cancer diagnostics, treatment and therapy. With the establishment of a second research reactor (PARR-2) at PINSTECH, research in neutron activation analysis, radioisotope production and separation studies gained more momentum and many research articles were published. Solvent extraction, adsorption and ion-exchange were the main routes of separation in those studies. Separation of heavy metals and treatment of waste generated in a nuclear power plant are other important aspects related to environmental restoration and nuclear waste management, where radiochemistry is required. In future, work in radiochemistry will be continued on similar lines to develop novel radiopharmaceuticals, identify indigenous schemes for nuclear waste management and work out intelligent procedures for material characterization for benefit to mankind, especially the people of Pakistan.

show abstract

Zn(II) ions removal from aqueous solution by Karachi beach sand, a mixed crystal systems

Cited by 8 publications

References 20 publications

Notice of Retraction: Adsorption Characteristics of Zn(II) and Cu(II) on Alkaline Ca-Bentonite

Notice of Retraction: Adsorption Characteristics of Zn(II) and Cu(II) on Alkaline Ca-Bentonite

Kinetics of adsorption of metal ions on inorganic materials: A review

Development of radiochemistry in Pakistan – 1960 to 2010

Contact Info

Product

Resources

About