| Summary: |
The most common methods for the treatment of water containing heavy metals include precipitation and adsorp-tion. The coagulation, ion exchange and ion exchange combined with precipitation are widely used for the re-covery of heavy metals.
In this study the removal of Sr2+, Al3+, Mn2+ and Fe2+ from aqueous solutions was investigated. Diatomite, pum-ice stone and brownish sepiolite were used as adsorbents. A solution prepared by dissolving the pure strontium, aluminium, manganese and iron salts in distilled water, was used as the contaminated water sample and aliquots were taken from the bottom of the column for Sr2+, Al3+, Mn2+ and Fe2+ analysis.
It could be seen that the brownish sepiolite was a more effective adsorbent for Sr2+, Mn2+ and Fe2+ ions than the diatomite and the pumice stone. But all adsorbents examined cannot be used for Al3+ ion removal from the aqueous solution. |