What is it about?
Nano-birnessite was prepared, characterized and used for the removal of cobalt and strontium ions from aqueous solutions. Specific surface area of nano-birnessite was determined and found to be 200.54 m2/g. The capacities of nano-birnessite for cobalt and strontium are 2.97 and 3.04 meq/g, respectively. The kinetic studies indicated that the sorption of the two ions obeys pseudo-second-order model and controlled by an intra-particle diffusion mechanism. The diffusivity of Co2+ and Sr2+ ions onto nano-birnessite was determined and indicated that the sorption is chemisorption process.
Featured Image
Why is it important?
Birnessite material was prepared in nano scale; this material is characterized by high sorption capacity for strontium and cobalt ions relative to other sorbents as compared to the state of the art in the literature. As well as it is a low cost material. The studies illustrated that the prepared material can be considered as a promising material for removal of strontium and cobalt ions form waste water.
Perspectives
Hence, nano-birnessite material is an efficient sorbent and can be used to decrease the influx of pollutants, such as; Co2+ and Sr2+ ions to the environment or their removal from contaminated media.
Sayed Metwally
Egyptian Atomic Energy Authority
Read the Original
This page is a summary of: Physicochemical properties of synthetic nano-birnessite and its enhanced scavenging of Co2+ and Sr2+ ions from aqueous solutions, Materials Chemistry and Physics, June 2017, Elsevier,
DOI: 10.1016/j.matchemphys.2017.02.006.
You can read the full text:
Contributors
The following have contributed to this page
