Abstract
The efficacy of Zn–Al sulphate layered double hydroxides (LDHs) in removing molybdenum from aqueous solution was tested through sorption of aqueous molybdate by synthetic samples in batch experiments. Up to ~54% Mo is removed; the most efficient mechanism is sulphate–molybdate exchange within the LDH interlayer, which preserves the layered structure, though with a partial loss of structural order. The Mo uptake is influenced primarily by the [Zn2+]/[Al3+] ratio, which determines the ionic charge of the brucite-like layer; high ratios facilitate the release of sulphate from the interlayer and the entrance of molybdate, whilst for low ratios surface adsorption of molybdate becomes an important uptake mechanism. The Mo removing potential shown by Zn–Al sulphate LDHs may prove useful for the treatment of moderately contaminated waters.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
