Temperature effect on the mechanism of phosphate anions sorption by β-MnO2

Mustafa, S.; Zaman, Muhammad Iqbal; Khan, Shahab Ullah

doi:10.1016/j.cej.2007.10.020

Cited by 53 publications

(28 citation statements)

References 24 publications

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“…This is very favorable for its engineering applications in the treatment of water or wastewater, especially the remediation of phosphate-contaminated water body. Among various oxides, iron and manganese (hydr) oxides are well known due to their affinity towards phosphate [4,15]. However, until now, very little is known about the adsorption behaviors of phosphate on freshly formed Fe-Mn binary oxide.…”

Section: Introductionmentioning

confidence: 99%

Phosphate removal from water using freshly formed Fe–Mn binary oxide: Adsorption behaviors and mechanisms

Lǚ

Liu

Zhao

et al. 2014

Colloids and Surfaces A: Physicochemical and Engineering Aspect

127

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Section: Introductionmentioning

confidence: 99%

Phosphate removal from water using freshly formed Fe–Mn binary oxide: Adsorption behaviors and mechanisms

Lǚ

Liu

Zhao

et al. 2014

Colloids and Surfaces A: Physicochemical and Engineering Aspect

127

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“…It was found that the sorption amount of phosphate and sulfate on sorbent in the equilibrium state increased when the initial concentration of Eu(III) in solution increased. Mustafa et al [41,42] and Nemeth et al [43] found that phosphate can sorb on the sorbent, which can be influenced by pH, temperature and the concentration of phosphate.…”

Section: Phosphate and Sulfate Sorption On The Sorbentmentioning

confidence: 98%

Sorption of Eu(III) on Th4(PO4)4P2O7: effects of pH, complexing anions and fulvic acid

Qian

Cui

Liu

et al. 2015

J Radioanal Nucl Chem

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The sorption of Eu(III) on Th 4 (PO 4 ) 4 P 2 O 7 was studied under ambient conditions using the batch technique. The effects of pH, the concentrations of Eu(III) on Th 4 (PO 4 ) 4 P 2 O 7 sorption were investigated. The sorption characteristics of sulfate, phosphate and fulvic acid (FA) on Th 4 (PO 4 ) 4 P 2 O 7 was explored in the presence Eu(III). The results indicated that sorption of Eu(III) on Th 4 (PO 4 ) 4 P 2 O 7 was strongly affected by pH and the concentrations of Eu(III). Eu(III) sorption onto Th 4 (PO 4 ) 4 P 2 O 7 was greatly enhanced in FA and phosphate media than in KNO 3 . The Langmuir, Freundlich and D-R model were used to simulate the sorption isotherms of Eu(III) at four different medium. FA sorption isotherm can be described by Langmuir model in presence and absence of Eu(III) in solution.

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“…The positive value of DH°indicates an endothermic process. The positive value of the entropy change (DS°) implies good affinity of phosphate ions toward the adsorbent, with increasing randomness at the solid-solution interface during the adsorption process (Mustafa et al 2008). The negative values of the Gibbs energy change (DG°) infer a spontaneous nature of the adsorption process and the feasibility of the adsorption of phosphate onto silica sulfate.…”

Section: Thermodynamic Studymentioning

confidence: 99%

“…Algal blooms lead to various environmental and aesthetic problems in water bodies by disrupting normal functions of the ecosystem and causing drastic impacts on the food chain. Phosphate is discharged to natural waters from industrial wastewater, animal wastewater, domestic sewage and laundries, passage of water over phosphate rocks, and extensive application of manure and fertilizer to soils (Mustafa et al 2008). Therefore, not only is it important to address the recovery of phosphorous, but also its removal from wastewater (Ebie et al 2008).…”

Section: Introductionmentioning

confidence: 99%

High removal of phosphate from wastewater using silica sulfate

et al. 2011

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This report shows that silica sulfate is removing phosphate from wastewater very efficiently. Phosphorus removal and recovery from wastewater is a worldwide issue due to pollution of natural waters by phosphate and depletion of phosphate ores. Adsorption is a process that can remove phosphate at low concentrations. Adsorption also allows the recovery of phosphate for possible re-use. Here, we studied the adsorption of phosphate from wastewater using commercial Zr ferrite, Zr-MCM 41 and silica sulfate. We calculated equilibrium isotherms, kinetic models and thermodynamic effects under conditions similar to real wastewaters. We found that the equilibrium data for the adsorption of phosphate were best fitted to the Freundlich model. The results show that the maximum uptake of phosphate was 3.36 mg g -1 for Zr-MCM, 27.73 mg g -1 for Zr ferrite and 46.32 mg g -1 for silica sulfate. The kinetic results of the three adsorbents were satisfactorily predicted using a pseudo-second-order model. We found that silica sulfate provided excellent characteristics in terms of the maximum adsorption and rate constant for the adsorption of phosphate. The thermodynamic data showed that increasing the temperature enhanced the adsorption of phosphate onto silica sulfate.Our findings will help to define efficient methods to remove phosphate from wastewater.

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Temperature effect on the mechanism of phosphate anions sorption by β-MnO2

Cited by 53 publications

References 24 publications

Phosphate removal from water using freshly formed Fe–Mn binary oxide: Adsorption behaviors and mechanisms

Phosphate removal from water using freshly formed Fe–Mn binary oxide: Adsorption behaviors and mechanisms

Sorption of Eu(III) on Th4(PO4)4P2O7: effects of pH, complexing anions and fulvic acid

High removal of phosphate from wastewater using silica sulfate

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