Removal of Cd(II) and Pb(II) ions, from aqueous solutions, by adsorption onto sawdust of Pinus sylvestris

Taty-Costodes, V. Christian; Fauduet, Henri; Porte, Catherine; Delacroix, Alain

doi:10.1016/j.jhazmat.2003.07.009

Cited by 646 publications

(329 citation statements)

References 27 publications

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“…Surface area is related to the adsorption capacity of an adsorbent. As the surface area increases, more binding sites are available for the adsorbate to be adsorbed [13]. The multipoint BET surface area analysis of MBB was performed with Quantachrome Nova 2200e.…”

Section: A Characterisation Of Adsorbentmentioning

confidence: 99%

Optimization of Nickel and Copper Ions Removal by Modified Mangrove Barks

Rozaini¹,

Jain²,

Oo³

et al. 2010

IJCEA

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Abstract-Mangrove barks Rhizophora apiculata which have been chemically modified in basic condition were used as adsorbent for the removal of nickel and copper ions from aqueous solution. The adsorbent was characterized by SEM images, FT-IR and BET analysis. Effecting parameters like initial pH, initial concentrations of metal ions and contact time were investigated. The adsorption data were well fitted by Freundlich isotherm model. Kinetic data were best described by pseudo-second-order model. Thermodynamic studies showed spontaneous and exothermic nature in the adsorption of Ni(II) and Cu(II) ions by the modified mangrove barks.

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Section: A Characterisation Of Adsorbentmentioning

confidence: 99%

Optimization of Nickel and Copper Ions Removal by Modified Mangrove Barks

Rozaini¹,

Jain²,

Oo³

et al. 2010

IJCEA

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“…The complex structure of dyes cannot easily biodegrade. The dye effluents should be treated to prescribed limits before final disposal 1,2 . Malachite green (MG) was classified as a triarylmethane dye.…”

Section: Introductionmentioning

confidence: 99%

"Use of Plant Biomass for Removal of Malachite Green From Aqueous Solution and Optimization Using Central Composite Design (Ccd) "

2018

RJC

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Biosorption is the attractive technique of wastewater treatment to retain the dyes. Biosorption of Malachite Green (MG) using leaf biomass Plumbago Zeylanica (PZ) from an aqueous solution was studied using the batch technique. The batch analysis was accessed by altering the variables like time, pH, dye concentration, biosorbent dosage, average biosorbent size and temperature. The % removal of 93% was attained at 25mg/L of concentration for 50ml of an aqueous solution with a time of 45min, pH 9, the dosage of 0.1g and average biosorbent size of 63 µm having 303 K as temperature. By utilizing four models the equilibrium data were reviewed. The Langmuir model was the best fit with an R 2 value of 0.998. The kinetics data were evaluated by three models. The data was suitable to Pseudo-second order kinetics. Thermodynamic parameters evaluated are enthalpy change (∆H o ), entropy change (∆S o ) and free energy (∆G o ). The negative value of (∆H o ) represents an exothermic reaction. The operating conditions are optimized using Response Surface Methodology (RSM)

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“…The fact that the variation of pH with the addition of Cd depends on the type of sorbent may be related to the sorption of the metal taking place by different mechanisms. When the dominant mechanism is the electrostatic attraction between the surface of the negatively charged bio-sorbent and Cd 2+ , an exchange with H + can take place, decreasing solution pH [61]. According to Memon et al [58], the ion exchange mechanism could be the most frequent in Cd adsorption on organic materials (such as the hemp waste and pine bark in the present study), since its cell walls are formed by cellulose and lignin, with many hydroxyl groups present in tannins and other phenols (see Supplementary Material), which are active ion exchangers.…”

Section: Sorption On the Individual Materialsmentioning

confidence: 99%

Cadmium and Lead Sorption/Desorption on Non-Amended and By-Product-Amended Soil Samples and Pyritic Material

Núñez‐Delgado

Romar-Gasalla

Santás-Miguel

et al. 2017

Water

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Batch-type experiments were used to study cadmium (Cd) and lead (Pb) sorption/desorption on forest soil, vineyard soil and pyritic material samples, on the by-products mussel shell, oak ash, pine bark and hemp waste, and on forest soil, vineyard soil and pyritic material amended with 48 t ha −1 of oak ash, mussel shell, and hemp waste. The main results were that the forest soil showed higher Cd and Pb retention than the vineyard soil and the pyritic material. Regarding the byproducts, sorption was in the following order: oak ash > mussel shell > hemp waste > pine bark, with desorption following an inverse sequence. The pH was the parameter that most influenced Cd and Pb sorption. Cd and Pb sorption curves showed better fitting to the Freundlich than to the Langmuir model, indicating the dominance of multilayer interactions. Oak ash and mussel shell were the amendments causing higher increase in Cd and Pb sorption on both soils and the pyritic material (close to 100% with the oak ash amendment), as well as more a pronounced decrease in desorption. These results could be used to favor an effective management of the by-products studied, which could retain Cd and Pb in soils and degraded areas, preventing water pollution.

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Removal of Cd(II) and Pb(II) ions, from aqueous solutions, by adsorption onto sawdust of Pinus sylvestris

Cited by 646 publications

References 27 publications

Optimization of Nickel and Copper Ions Removal by Modified Mangrove Barks

Optimization of Nickel and Copper Ions Removal by Modified Mangrove Barks

"Use of Plant Biomass for Removal of Malachite Green From Aqueous Solution and Optimization Using Central Composite Design (Ccd) "

Cadmium and Lead Sorption/Desorption on Non-Amended and By-Product-Amended Soil Samples and Pyritic Material

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