Adsorptive Removal of Pb(II) Ions with Magnetic Metal-Organic Frameworks from Aqueous Samples
Year: 2017
Type: article
Abstract: In this study, we report the application of magnetic metal-organic frameworks as a novel adsorbent for fast removal of Pb(II) ions from aqueous solution in view of adsorption isotherms, kinetics, thermodynamics, desorption, and adsorbent regeneration.The adsorbent was characterized by PPMS, XRD, TEM and N 2 adsorption/desorption measurement.The adsorption follows pseudo-second-order kinetics model and fits the Freundlich adsorption model with the adsorption capacity of 612 mg g -1 for Pb(II) ions.It is a spontaneous and endothermic process controlled by positive entropy change.The used Fe 3 O 4 /HKUST-1 could be regenerated effectively and recycled at least four times without significant loss of adsorption capacity.
Source: General Chemistry
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2626433175