Adsorption of Copper(II) and Lead(II) Ions from Aqueous Solutions by Porcellanite

Hmood, A.; Jassim, T.E.

doi:10.5376/ijms.2015.05.0029

Cited by 1 publication

(1 citation statement)

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“…The adsorption of lead (II) on the surface of the prepared titanium dioxide nanotubes has been studied, using different primary concentrations from lead solution 10,20,30 and40 mg/l at a temperature of 25C and at pH=8 as shown in We note through the results below that the removal percentage of the lead ions decreased with the initial concentration of lead increasing, and the main reason for this is that with the increase in the lead ions concentration the present of ions number in the solution increases, and therefore it works on occupying the largest number of effective places on the surface of the adsorbent ,so the ratio of ions that experience adsorption is less than the ratio of free ions in the solution (Shojaei et al, 2020), while in solutions with low concentrations, the percentage of free ions in the solution is less than or equal to the effective sites number on the adsorbing surface (Vardhan et al, 2020;Hmood and Jassim, 2015).…”

Section: Effect Of Initial Metal Concentrationmentioning

confidence: 99%

The possibility of using TiO2 Nanotube Arrays‏ ‏as an adsorbent for removing lead ions ‎from aqueous solutions

Abood,

Al-Abdullah

2023

MJMS

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This work focused on the elimination of lead ions from aqueous solutions using titanium dioxide nanotubes synthesised by anodization method as an adsorbent material using the batch system. The prepared titanium dioxide tubes(TNTs) were characterized using a scanning electron microscope device(SEM). The prepared tubes were within the nanoscale. Various conditions affected the adsorption process were studied, such as equilibrium time, temperature, acidity function and initial concentration of lead ions. It was found that the highest removal percentage occurred at the pH = 8 and that the time required for system equilibrium was 60 minutes. It was also found that the removal percentage increases with increasing temperature, which indicates the adsorption reaction as an endothermic. The Langmuir and Freundlich adsorption isotherms were also studied. The Freundlich equation was the most appropriate to the studied system. The thermodynamic studies also exhibited that the removal process was spontaneous, and the ΔS positive values indicated randomness increasing.

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Section: Effect Of Initial Metal Concentrationmentioning

confidence: 99%