| Literature DB >> 15707633 |
Yan-Hui Li1, Zechao Di, Jun Ding, Dehai Wu, Zhaokun Luan, Yanqiu Zhu.
Abstract
Adsorption thermodynamics of Pb2+ on carbon nanotubes has been studied at various temperatures of 280, 298 and 321 K and the thermodynamic parameters, such as equilibrium constant (K0), standard free energy changes (DeltaG0), standard enthalpy change (DeltaH0) and standard entropy change (DeltaS0), have been obtained. A pseudo-second-order rate model has been employed to describe the kinetic adsorption processes. Desorption studies reveal that Pb2+ can be easily removed from carbon nanotubes by altering the pH values of the solution using both HCl and HNO3, indicating that carbon nanotubes are a promising absorbent for wastewater treatment.Entities:
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Year: 2004 PMID： 15707633 DOI： 10.1016/j.watres.2004.11.004
Source DB: PubMed Journal: Water Res ISSN： 0043-1354 Impact factor: 11.236