Equilibrium, kinetic and thermodynamic studies on the removal of U(VI) by low cost agricultural waste

Kausar, Abida; Bhatti, Haq Nawaz; MacKinnon, Gillian

doi:10.1016/j.colsurfb.2013.05.028

Cited by 106 publications

(50 citation statements)

References 35 publications

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“…The Temkin isotherm model [42] suggests an equal distribution of binding energies over a number of exchange sites on the surface. The linear form of Temkin isotherm model is given below:…”

Section: Temkin Isothermmentioning

confidence: 99%

Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto <i>Urtica dioica</i> Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies

Tiwari¹

2017

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Abstract:The biosorption of Cu (II), Zn (II) and Pb (II) ions from aqueous solution onto dried biomass (Urtica dioica leaves) is discussed in the present study. The effect of variation of contact time, adsorbent dose, pH, concentration of metal ions and temperature on biosorption of metal ion is studied. Maximum adsorption was recorded for initial metal ion concentration of 10 mg/l, adsorbent dose of 2 gm, at pH 5 with 60 minutes of contact time for Lead and Zinc, 45 minutes of contact time for Copper ion. The equilibrium conditions were well described by Langmuir, Freundlich and Temkin isotherm equations. The Langmuir isotherm model have provided a better fit with the experimental data compared to that of Freundlich and Temkin isotherm models. The values of thermodynamic parameters indicate that the adsorption reactions were spontaneous, feasible and exothermic.

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“…The Temkin isotherm model [42] suggests an equal distribution of binding energies over a number of exchange sites on the surface. The linear form of Temkin isotherm model is given below:…”

Section: Temkin Isothermmentioning

confidence: 99%

Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto <i>Urtica dioica</i> Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies

Tiwari¹

2017

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“…In recent year there has been increasing interest in the use of low cost agricultural materials as adsorbent for the removal of industrial effluents or waste water. A number of investigations for the removal of dyes from aqueous solution have been carried out using low cost agricultural materials as adsorbent [15][16][17][18]. However, research interest into production of more new economical, easily available and highly efficient adsorbents are still under development.…”

Section: Introductionmentioning

confidence: 99%

“…Over the past few decades, conventional waste water treatment methods for removing dyes include biological (aerobic and anaerobic), chemical and physiochemical methods such as coagulation and flocculation, solvent extraction, membrane filtration ozonation, ion exchange, electrochemical techniques, fungal decolonization and adsorption [10][11][12][13]. The removal of dyes from wastewater or industrial effluent using adsorption method has recently gained more favour than the other methods of removal of dyes.…”

Section: Introductionmentioning

confidence: 99%

Adsorption and Equilibrium Studies on the Removal of Methyl Red from Aqueous Solution Using White Potato Peel Powder

Enenebeaku

Okorocha

Enenebeaku

et al. 2017

ILCPA

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Abstract. The potential of white potato peel powder for the removal of methyl red (MR) dye from aqueous solution was investigated. The adsorbent was characterized by FTIR and SEM analysis. Batch adsorption studies were conducted and various parameters such as contact time, adsorbent dosage, initial dye concentration, pH and temperature were studied to observe their effects in the dye adsorption process. The optimum conditions for the adsorption of MR onto the adsorbent (WPPP) was found to be contact (80 mins), pH (2) and temperature (303 K) for an initial MR dye concentration of 50 mg/l and adsorbent dose of 1.0 g. The experimental equilibrium adsorption data of the (MR) dye fitted best and well to the Freundlich isotherm model. The maximum adsorption capacity was found to be 30.48 mg/g for the adsorption of MR. The kinetic data conforms to the pseudo-second order kinetic model.

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“…The adequacy of the pseudo second order model to fit the adsorption data suggests that the rate-limiting step is a chemical sorption or chemisorptions involving valence forces through sharing or exchange of electrons between adsorbate and adsorbent [18]. Moreover, the applicability of both pseudo-second-order and Elovich kinetic models to the experimental data gives a further confirms that chemisorptions is the dominant process in controlling [19].…”

Section: Single and Binary Al(iii) And Fe(iii) Kinetics Analysismentioning

confidence: 56%

Cost Effective Adsorption of Aluminium and Iron from Synthetic and Real Wastewater by Rice Hull Activated Carbon (RHAC)

Abdel‐Ghani¹,

El-Chaghaby²,

Zahran³

2015

AJAC

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The adsorption of aluminium(III) and iron(III) ions from their single and binary systems, by RHAC was investigated in a batch system. The activated carbon prepared from rice hulls was characterized by scanning electron microscopy and Fourier transformation infrared techniques. Batch adsorption experiments were performed under different operating conditions including pH (2 -5), adsorbent dosage (0.5 -2.0 g/l), initial ion concentration (5 -100 mg/l), and contact time (30 -240 min). The equilibrium time for maximum ions removal was found to be 180 min in single and binary ions systems. The kinetics of adsorption was evaluated using the pseudo-first order, pseudosecond order and Elovich kinetic models. The Langmuir, Freundlich and Temkin equilibrium models were applied to the adsorption experimental data. Real wastewater samples were collected from different locations to investigate the efficiency of rice hull activated carbon in treating real samples. The real wastewater samples were treated with the activated carbon prepared from rice hulls and a commercial activated carbon. The results showed that the activated carbon prepared in the present work was more efficient in the removal of aluminium and iron from real wastewater as compared to the commercial activated carbon which is more advantageous considering both economics and environmental parameters.

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Equilibrium, kinetic and thermodynamic studies on the removal of U(VI) by low cost agricultural waste

Cited by 106 publications

References 35 publications

Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto <i>Urtica dioica</i> Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies

Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto <i>Urtica dioica</i> Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies

Adsorption and Equilibrium Studies on the Removal of Methyl Red from Aqueous Solution Using White Potato Peel Powder

Cost Effective Adsorption of Aluminium and Iron from Synthetic and Real Wastewater by Rice Hull Activated Carbon (RHAC)

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Equilibrium, kinetic and thermodynamic studies on the removal of U(VI) by low cost agricultural waste

Cited by 106 publications

References 35 publications

Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto &lt;i&gt;Urtica dioica&lt;/i&gt; Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies

Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto &lt;i&gt;Urtica dioica&lt;/i&gt; Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies

Adsorption and Equilibrium Studies on the Removal of Methyl Red from Aqueous Solution Using White Potato Peel Powder

Cost Effective Adsorption of Aluminium and Iron from Synthetic and Real Wastewater by Rice Hull Activated Carbon (RHAC)

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Product

Resources

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Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto <i>Urtica dioica</i> Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies

Adsorption of Pb (II), Cu (II), and Zn (II) Ions onto <i>Urtica dioica</i> Leaves (UDL) as a Low Cost Adsorbent: Equilibrium and Thermodynamic Studies