scholarly journals Removal of Heavy Metals (Fe3+, Cu2+, Zn2+, Pb2+, Cr3+ and Cd2+) from Aqueous Solutions by Using Hebba Clay and Activated Carbon

2010 ◽  
Vol 28 (4) ◽  
pp. 231-239 ◽  
Author(s):  
S A Shama ◽  
M A Gad
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Aqueous Solutions ◽  
Removal Of Heavy Metals

Removal of heavy metals from aqueous solutions using activated carbon prepared fromCicer arietinum

2010 ◽  
Vol 92 (8) ◽  
pp. 1447-1460 ◽  
Author(s):  
D.K.V. Ramana ◽  
K. Jamuna ◽  
B. Satyanarayana ◽  
B. Venkateswarlu ◽  
M. Madava Rao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Aqueous Solutions ◽  
Removal Of Heavy Metals

The Removal of Heavy Metals from Aqueous Solutions by Commercial Activated Carbon

2011 ◽  
Author(s):  
Nasir Al-Lagtah ◽  
Abdulrahman Al Saud ◽  
Ahmad Albadarin ◽  
Yousef Salameh ◽  
Gavin Walker ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Aqueous Solutions ◽  
Removal Of Heavy Metals

scholarly journals Study on Adsorption of Cu and Ba from Aqueous Solutions Using Nanoparticles of Origanum (OR) and Lavandula (LV)

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Ghadah M. Al-Senani ◽  
Foziah F. Al-Fawzan
Keyword(s):  
Heavy Metals ◽  
Particle Size ◽  
Free Energy ◽  
Aqueous Solutions ◽  
Thermodynamic Parameters ◽  
Solution Ph ◽  
Environment Friendly ◽  
Removal Of Heavy Metals ◽  
Equilibrium Data ◽  
Langmuir And Freundlich Models

Wild herbs (Origanum (OR) and Lavandula (LV)) were used as environment-friendly adsorbents in this study. The adsorbents were used for adsorption of Cu and Ba from water. The adsorption of heavy metals onto OR and LV was dependent on particle size, dose, and solution pH. The diameter of adsorbent particles was less than 282.8 nm. The adsorption follows second-order kinetics. Langmuir and Freundlich models have been applied to describe the equilibrium data, and the thermodynamic parameters, the Gibbs free energy, ∆G°, enthalpy, ∆H°, and entropy, ∆S°, have been determined. The positive value of ∆H° suggests that the adsorption of heavy metals by the wild herbs is endothermic. The negative values of ∆G° at all the studied temperatures indicate that the adsorption is a spontaneous process. It can be concluded that OR and LV are promising adsorbents for the removal of heavy metals from aqueous solutions over a range of concentrations.

Sign in / Sign up

Export Citation Format

Share Document