The sorption of lead(II) ions on rice husk ash

Naiya, Tarun Kumar; Bhattacharya, Ashim Kumar; Mandal, Sailendranath; Das, Sudip

doi:10.1016/j.jhazmat.2008.07.119

Cited by 337 publications

(152 citation statements)

References 56 publications

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“…However, in high initial concentrations, binding sites get saturated; therefore, the adsorption rate decreases. It is a result of the formation of the binding sites with low energy due to the increased dye concentration [34]. Figures 8 and 9.…”

Section: The Effect Of Ph Initial Dye Concentration and Contactmentioning

confidence: 98%

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Kaykıoğlu

Güneş

2016

Journal of Nanomaterials

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The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (RHA-MNP) which is produced from rice husk ash burned at 300 ∘ C and the magnetic nanoparticle (MNP, Fe 3 O 4 ), was studied. Batch processes were used under different test parameters: pH (2, 4, 6, and 10) and without pH, initial dye concentration (20,40, 60, 80, and 100 mg/L), and contact time (0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 min). Optimum conditions for AR114 removal were found to be at natural pH (pH without correction) for both adsorbents. Freundlich isotherm was found to be more consistent for MNP and Langmuir isotherm was found to be more consistent for RHA-MNP. The maximum adsorption capacities of MNP and RHA-MNP adsorbents for AR114 dye were equal to 111 mg/g. The kinetic experimental data fitted the pseudo-second-order model for both MNP and RHA-MNP. It can be concluded that RHA-MNP which is a waste could be used as low-cost adsorbent to remove AR114 from aqueous solution.

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Section: The Effect Of Ph Initial Dye Concentration and Contactmentioning

confidence: 98%

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Kaykıoğlu

Güneş

2016

Journal of Nanomaterials

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“…This can be associated with the fact that the low initial metal ion concentration in the solution the ions would interact with the binding sites of adsorbent and thus facilitate higher adsorption whereas at higher concentrations, more ions are left unabsorbed in the solution due to the saturation of the binding sites 3 . However, at the same dose of adsorbent, the metal ions per unit of adsorbent Q e ( Figure 10) have been increased with the increase of initial metal ion concentration.…”

Section: Effect Of Initial Metal Ions Concentrationmentioning

confidence: 99%

“…To protect the public health and environment the removal of these metals from wastewater is important 2 . Copper, zinc and lead have been introduced in the environment from a variety of sources like storage battery 3 , paints and pigments 4 , electronics 5 fertilisers 6,7 and electroplating 8,9 . High concentration of copper leads to severe gastrointestinal irritation and possible necrotic changes in the liver and kidney in human 10 .…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and Thermodynamic Studies of Pb(II), Cu(II) and Zn(II) Adsorption onto Dicliptera bupleuroides Leaves

2017

Chem Sci Trans

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Biosorption of Cu(II), Zn(II) and Pb(II) ions onto Dicliptera bupleuroides leaves (DBL) in a batch system with respect to adsorbent dose, contact time, temperature, pH and initial metal ion concentration was investigated. Langmuir, Freundlich and Temkin isotherm model were applied to describe the equilibrium data. Langmuir isotherm model provided a better fit to the experimental data than the Freundlich and Temkin isotherm. The adsorption capacity is 2.55 mg/g, 1.06 mg/g, and 1.76 mg/g for Cu(II), Zn(II) and Pb(II) respectively. The optimum adsorption conditions obtained were at contact time 75 min, pH 5, initial metal ion concentration 10 mg/L, temperature 45 o C for Cu(II) and 30 o C for Zn(II) and Pb(II) and adsorbent dose 2.5 g. Thermodynamic parameters indicated that the adsorption reactions were spontaneous (∆G 0 <0), feasible and exothermic (∆H 0 <0) .

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“…The rice husk ash was collected from the particulate collection equipment attached upstream to the stack of rice-fired boilers. The ash generated represents a severe disposal problem (Naiya et al, 2009;Srivastava et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Some of the important ones include zeolites (Wang and Peng, 2009;Okolo et al, 2000), activated carbon (Wahby et al, 2011;Moreno-Piraján et al, 2011;Attia et al, 2010;Giraldo and Moreno-Piraján, 2008), rubber ash (Mousavi et al, 2010), clay (Galindo et al, 2013;Almeida Neto et al, 2012;Vieira et al, 2010a;Vieira et al, 2010b), expanded perlite (Torab-Mostaedi et al, 2010), vermiculite (Nishikawa et al, 2012), algae (Vieira et al, 2008;Vijayaranghavan et al, 2005;Silva et al, 2003), bacteria (Yilmaz et al, 2010), coir pith (Parab et al, 2006), sugarcane bagasse (Lv et al, 2008;Gupta and Ali, 2004), olive stone (Calero et al, 2009) and rice husks Vieira et al, 2011;Senthil Kumar et al, 2010;Naiya et al, 2009;Srivastava et al, 2006;Ye et al, 2010;Nakbanpote et al, 2007;.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of lead and copper ions from aqueous effluents on rice husk ash in a dynamic system

Vieira

Neto

Silva

et al. 2014

Braz. J. Chem. Eng.

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-This study evaluated the kinetic adsorption of Pb and Cu ions using rice husk ash as adsorbent in a fixed bed. The maximum adsorption capacities obtained for lead and copper ions in the fixed bed were 0.0561 and 0.0682 mmol/g (at 20 °C), respectively. The thermodynamic studies indicated that the lead adsorption process was exothermic and spontaneous, while the copper adsorption process was endothermic and spontaneous. Characterization results indicated the presence of several functional groups, amorphous silica and a fibrous and longitudinal structure of rice husks. Rice husk ash (RHA) from northern Brazil can be used as a bioadsorbent for the individual removal of Pb(II) and Cu(II) ions from metal-containing effluents.

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The sorption of lead(II) ions on rice husk ash

Cited by 337 publications

References 56 publications

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Equilibrium and Thermodynamic Studies of Pb(II), Cu(II) and Zn(II) Adsorption onto Dicliptera bupleuroides Leaves

Adsorption of lead and copper ions from aqueous effluents on rice husk ash in a dynamic system

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The sorption of lead(II) ions on rice husk ash

Cited by 337 publications

References 56 publications

Comparison of Acid Red 114 Dye Adsorption by Fe3O4and Fe3O4Impregnated Rice Husk Ash

Comparison of Acid Red 114 Dye Adsorption by Fe3O4and Fe3O4Impregnated Rice Husk Ash

Equilibrium and Thermodynamic Studies of Pb(II), Cu(II) and Zn(II) Adsorption onto Dicliptera bupleuroides Leaves

Adsorption of lead and copper ions from aqueous effluents on rice husk ash in a dynamic system

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Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash

Comparison of Acid Red 114 Dye Adsorption by Fe₃O₄and Fe₃O₄Impregnated Rice Husk Ash