Abstract
Bentonite – clay rock, which consist mainly of clay mineral montmorillonite, is an excellent sorbent, widely used in wastewater treatment. The aim of the presented work was to evaluate the effect of the microwave radiation on the structure and stability of raw bentonite which is to be applied as a sorbent of ions from water solutions. Water extracts were prepared by batch method using deionized water. The leachate was prepared for 1, 6 and 24 h in different ratios of solid-to-liquid phase from the samples of raw clay and the magnetically modified clay – prepared by interaction with microwave radiation. In the filtrate, pH was determined as well as concentrations of Al, Ca, Fe, K, Mg, Na and Si using Atomic emission spectrometry with inductively coupled plasma. The results imply that microwave treatment of the bentonite changes the pH of the leachates to more acidic compared to the raw bentonite in which the pH increases. Magnetically modified bentonite treated by microwaves contained 2.67 wt% of the iron oxide which is 4 times more than in the raw bentonite. The microwave treatment of bentonite did not cause higher leaching of observed elements in comparison with raw bentonite.
Published Version
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 call