Kinetic modeling and thermodynamic study to remove Pb(II), Cd(II), Ni(II) and Zn(II) from aqueous solution using dead and living Azolla filiculoides

Rakhshaee, Roohan; Khosravi, Morteza; Ganji, Masoud

doi:10.1016/j.jhazmat.2005.10.042

Cited by 97 publications

(38 citation statements)

References 37 publications

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“…The values of ΔG became more negative with the increase in temperature, indicating that the adsorption processes would be more favorable at high temperature. The similar results are found in the studies of Wang and Qin [33], Rakhshaee et al [34], Xie et al [35]and Yin et al [36], The positive values of ΔS showed the affinity of SA or CSA for Cu 2+ ions increased the disorder at the solid/liquid interface during the adsorption process. Generally, the change in free energy for physical adsorption is between −20 kJ/mol and 0, and that for chemical adsorption is between −80 and −400 kJ/mol [37].…”

Section: Thermodynamics Of the Adsorptionsupporting

confidence: 87%

Adsorption Properties of Copper (II) Ion From Aqueous Solution by Starch-Grafted Polyacrylamide and Crosslinked Starch-Grafted Polyacrylamide

Tan

Wei

Ouyang³

et al. 2014

Period. Polytech. Chem. Eng.

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Section: Thermodynamics Of the Adsorptionsupporting

confidence: 87%

Adsorption Properties of Copper (II) Ion From Aqueous Solution by Starch-Grafted Polyacrylamide and Crosslinked Starch-Grafted Polyacrylamide

Tan

Wei

Ouyang³

et al. 2014

Period. Polytech. Chem. Eng.

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“…Azolla biomass, in dead or pretreated form, has been used for biosorption of heavy metals Cs, Sr, Pb, Zn, Ni, Cu, Au, Cd, and Cr by various workers (Cohen-Shoel et al 2002;Rakhshaee et al 2006;Umali et al 2006;Nedumaran and Velan 2008;Mashkani and Ghazvini 2009). Table 5 summarizes the results of heavy metal biosorption by various workers.…”

Section: Biosorption Of Heavy Metals By Azollamentioning

confidence: 99%

Phytoremediation Potential of Aquatic Macrophyte, Azolla

Sood

Uniyal

Prasanna

et al. 2011

AMBIO

257

123

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Aquatic macrophytes play an important role in the structural and functional aspects of aquatic ecosystems by altering water movement regimes, providing shelter to fish and aquatic invertebrates, serving as a food source, and altering water quality by regulating oxygen balance, nutrient cycles, and accumulating heavy metals. The ability to hyperaccumulate heavy metals makes them interesting research candidates, especially for the treatment of industrial effluents and sewage waste water. The use of aquatic macrophytes, such as Azolla with hyper accumulating ability is known to be an environmentally friendly option to restore polluted aquatic resources. The present review highlights the phytoaccumulation potential of macrophytes with emphasis on utilization of Azolla as a promising candidate for phytoremediation. The impact of uptake of heavy metals on morphology and metabolic processes of Azolla has also been discussed for a better understanding and utilization of this symbiotic association in the field of phytoremediation.

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“…Although biosorption has gained much attention, the exact interactions between the metal ions and the functional groups on the cell, the kinetics and the thermal properties of biosorption have not been well defined [10]. Literature reports reveal however, a large number of studies in which microorganisms have been used as biosorbents for heavy metals, and these studies may be useful for low cost industrial wastewater treatment where rapid removal of several heavy metals is needed [11][12][13][14]. Most studies have focused on the removal of Pb 2+ , Cd 2+ , and Ni 2+ from wastewater by using various biosorbents.…”

Section: Introductionmentioning

confidence: 99%

Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II), cadmium(II) and nickel(II) ions on Spirulina platensis

Şeker¹,

Shahwan²,

Eroğlu³

et al. 2008

Journal of Hazardous Materials

119

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The biosorption of lead(II), cadmium(II) and nickel(II) ions from aqueous solution by Spirulina platensis was studied as a function of time, concentration, temperature, repetitive reactivity, and ionic competition. The kinetic results obeyed well the pseudo second-order model. Freundlich, Dubinin Radushkevich and Temkin isotherm models were applied in describing the equilibrium partition of the ions. Freundlich isotherm was applied to describe the design of a single-stage batch sorption system. According to the thermodynamic parameters such as G• , H • and S• calculated, the sorption process was endothermic and largely driven towards the products. Sorption activities in a three metal ion system were studied which indicated that there is a relative selectivity of the biosorbent towards Pb 2+ ions. The measurements of the repetitive reusability of S. platensis indicated a large capacity towards the three metal ions.

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Kinetic modeling and thermodynamic study to remove Pb(II), Cd(II), Ni(II) and Zn(II) from aqueous solution using dead and living Azolla filiculoides

Cited by 97 publications

References 37 publications

Adsorption Properties of Copper (II) Ion From Aqueous Solution by Starch-Grafted Polyacrylamide and Crosslinked Starch-Grafted Polyacrylamide

Adsorption Properties of Copper (II) Ion From Aqueous Solution by Starch-Grafted Polyacrylamide and Crosslinked Starch-Grafted Polyacrylamide

Phytoremediation Potential of Aquatic Macrophyte, Azolla

Equilibrium, thermodynamic and kinetic studies for the biosorption of aqueous lead(II), cadmium(II) and nickel(II) ions on Spirulina platensis

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